Definitions for "CDMA"
Related Terms:
Code division multiple access, Tdma, Time division multiple access, Wcdma, Td-scdma, W-cdma, Cdpd, Wideband code division multiple access, Global system for mobile communications, Is-95, Cdma2000, Cellular digital packet data, Pdc , Tri-mode, Iden, Amps, Cdmaone, Universal mobile telecommunications system, Umts, Pcs, Dual mode, Gsm, Personal communications service, Air interface, Advanced mobile phone system, Dcs 1800, General packet radio service, Multiple access, Is-136, Cdma2000 1x, Advanced mobile phone service, D-amps, Fdma, Personal communications services, Namps, Analogue, Sdma, Cellular radio, Gprs, Dect, Dual-mode, Cdma2000 1xev-dv, Third generation, Ardis, Edge , Digital european cordless telecommunications, Homerf, Dual band, Cdma2000 1xev-do, Wireless communication
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Abbreviation for ode- ivision ultiple ccess. A coding scheme, used as a modulation technique, in which multiple channels are independently coded for transmission over a single wideband channel. Note 1: In some communication systems, CDMA is used as an access method that permits carriers from different stations to use the same transmission equipment by using a wider bandwidth than the individual carriers. On reception, each carrier can be distinguished from the others by means of a specific modulation code, thereby allowing for the reception of signals that were originally overlapping in frequency and time. Thus, several transmissions can occur simultaneously within the same bandwidth, with the mutual interference reduced by the degree of orthogonality of the unique codes used in each transmission. Note 2: CDMA permits a more uniform distribution of energy in the emitted bandwidth.
A form of modulation whereby digital information is encoded in an expanded bandwidth format. Several transmissions can occur simultaneously within the same bandwidth with the mutual interference reduced by the degree of orthogonality of the unique codes used in each transmission. It permits a high degree of energy dispersion in the emitted bandwidth.
CDMA separates communications by code. Voice is broken into digitised bits, and groups of bits are tagged with a code. Each code is associated with a single call in the network. Groups of bits from one call are randomly transmitted along with those of other calls. Then they are reassembled in the correct order to complete the conversation.
A digital cell phone transmission technology based on assigning users unique sequence codes within a frequency range.
A method of digital communication that enables a number of cellular conversations to be transmitted on a single radio frequency. CDMA gives each conversation a numerical code that ensures that the correct signal is received by the called party.
This technique spreads a signal over a frequency band that is larger than the signal to enable the use of a common band by many users and to achieve signal security and privacy. See also IS-95 and CDMA2000.
ode ivision ultiple ccess: A spread spectrum air interface technology used in some digital cellular, personal communications services and other wireless networks.
a digital wireless technology that offers a number of advantages over other mobile communication technologies
a method of multiplexing (wireless) users by distinct (orthogonal) codes
a older technology and doesn't provide the same quality of service like GSM which is based on TDMA
A wireless communications technology that uses the spread spectrum communication to provide increased bandwidth. CDMA offers improved performance over the earlier TDMA technology. See also W-CDMA
(Code Division Multiple Access) A type of mobile phone network. Also known as spread spectrum, CDMA cellular systems utilize a single frequency band for all traffic, differentiating the individual transmissions by assigning them unique codes before transmission. Used by Sprint in the USA and Telus in Canada.
code division multiple access; a form of digital cellular phone service that is a spread spectrum technology that assigns a code to all speech bits, sends scrambled transmission of the encoded speech
(Code Division Multiple Access) protocol for wireless data and voice communication, CMDA is widely used in cellphone networks, but also in many other data communications systems. CDMA uses a technique called "Spread Spectrum" whereby the data being transmitted is spread across multiple radio frequencies, making more efficent use of available radio spectrum. There are a number of additional protocols built on top of CDMA, such as 1xRTT (also called CMDA2000).
CDMA (Code Division Multiple Access) mobile phones have longer range than digital mobiles in remote areas. More information: mobile phones
Code Division Multiple Access. Spread spectrum data transmission technology used by cellular telephone systems.
Code Division Multiple Access. This digital mobile phone system operates on two bands 800MHz and 1900MHz. Allowing further transmission from a CDMA tower to handset than a GSM signal can to a digital handdset.
Code Division Multiple Access. CDMA is a a digital standard used in the USA, the Far East and Japan. CDMA uses coding of the digital segments of calls, allowing networks to use space on channels over a wide range of frequencies.
Code Division Multiple Access, the second type of digital cellular system to be deployed in the United States (See TDMA).
Code division multiple access, one of the standards for 2Gmobile communications. It is a spread-spectrum technologystandard that assigns a pseudo-noise (PN) code to allspeech and data bits, sends a scrambled transmission ofthe encoded speech over the air and reassembles thespeech in its original format. By assigning a uniquecorrelating code to each transmitter, several simultaneousconversations can share the same frequency allocation.
Code Division Multiple Access. A spread spectrum technique to share bandwidth among a set of users.
stands for Code Division Multiple Access (as if you really cared!); in practical terms, this relates to how some major American networks work, whereas UK and European networks work differently. Mobile phone handsets designed for just one type won't work on others, hence the need for a tri-band or quad-band phone, capable of working on multiple network types, if you wish to use your phone when travelling around the world.
Code Division Multiple Access is a spread spectrum air interface technology used in some digital cellular, PCS and other wireless networks. It translates human voice into code, attaches a second unique code to the conversation, and it send it through the system along with up to ten other uniquely-coded conversions.
Code division multiple access. In a CDMA system, each voice circuit is labeled with a unique code and transmitted on a single-channel simultaneously with many other coded voice circuits. This allows for greater bandwidth.
A spread spectrum approach to digital transmission. With CDMA, each conversation is digitized and then tagged with a code.
Code Division Multiple Access. A multiple access technique in which signal from each station is provided with an individual and distinctive pseudo-random code. The codes for all stations are uncorrelated with one another. Also see multiple access.
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Code Division Multiple Access. CDMA is a spread spectrum digital technology. CDMA works by spreading all signals across the same broad frequency spectrum and assigning a unique code to each signal. The signals are pulled out from all the other signals only by the receiver that knows the code. This process allows more calls to occupy the same space.
Acronym for Code Division Multiple Access, a form of multiplexing in which the transmitter encodes the signal, using a pseudo-random sequence that the receiver also knows and can use to decode the received signal. Each different random sequence corresponds to a different communication channel.
Code Division Multiple Access. CDMA take analog information, converts it to a digital pattern and then somewhat like TDMA communicates across the whole available spectrum range at once. Unlike TDMA is also has the ability to communicate across multiple carriers or put simply can talk to multiple cellular base stations. Because of the ability to communicate across bases, there is increased security and fewer call drop-off's when a user moves from one area to another.
Code Division Multiple Access. A spread-spectrum digital cellular radio system in which different codes are used to distinguish sources.
CDMA stands for Code Division Multiple Access. CDMA is a type of digital wireless technology that allows large amounts of voice and data to be transmitted on the same frequency. It is a second-generation cellular technology or could be referred as 2G and is available in the United States, Pacific Asia, Canada, Latin America, etc. Most of the service providers of CDMA migrate to a high-speed data technology called '1xRTT'.
Code Division Multiple Access (CDMA) is one of several digital wireless transmission methods in which signals are encoded using a pseudo-random sequence - which corresponds to a different communication channel - that the receiver also knows and can use to decode the received signal. CDMA is one of several "spread spectrum" techniques. CDMA offers improvements over analog transmission in the areas of reduced call dropping, battery power conservation, more secure transmission and increased service options.
Code Division Multiple Access. This technology converts analogue signals into digital which are then transmitted over a network. CDMA enables multiple phone calls to be carried on the same frequency by using a voice-coding system. For more information see How cell phones work – cellular access technologies (How Stuff Works, USA).
(Code Division Multiple Access) Still in the trial stages (5/1996) Developed by Motorola and Qualcom. A digital data network in the US for use by cellular phones. This and TDMA are likely to become the dominant digital cellular system in the US (2/1996). In Europe and Asia it is GSM.
ode ivision ultiple ccess. (1) a technique to increase network capacity using voice compression and digital encoding to overlay several conversations on a single channel simultaneously. (2) TIA IS-95 standard for CDMA mobile systems in AMPS environment.
Code-division multiple access, or a digital cellular technology applying what is called "spread-spectrum techniques". This differs from GSM, for example, which does not assign a specific frequency to each user. Instead, every channel uses the full available spectrum.
code division multiple access. CDMA is a digital cellular technology. Unlike GSM, CDMA does not assign a specific frequency to each user. Instead, every channel uses the full available spectrum and the frequency is divided using codes.
(Code-Division Multiple Access): A digital cellular technology used primarily in the U.S. CDMA is promoted as providing better capacity for voice and data communications than other commercial mobile technologies.
Code Division Multiple Access: a digital wireless telephony transmission technique. 1. CDMA allows multiple frequencies to be used simultaneously (Spread Spectrum). The CDMA idea was originally developed for military use over 30 years ago. 2. The CDMA standards used for second-generation mobile telephony are the IS-95 standards championed by QUALCOMM.
CDMA (Code Division Multiple Access) is another popular digital technology that separates communications by code. It is offered in several bandwidths, typically 800MHz and 1900 MHz and requires a CDMA phone. CDMA usually allows for 14.4 Kbps wireless data connection whereas GSM and TDMA offer slower data bandwidth for wireless data connection (typically 9.6 Kbps).
Code Division Multiple Access American standard for mobile phone transmission. Competitor to GSM transmission. No SIM card is needed.
Code Division Multiple Access (CDMA) is a cellular phone standard popular in North America.
CDMA, one of the three wireless telephone transmission technologies, takes an entirely different approach from Global System for Mobile communication and the similar Time Division Multiple Access. CDMA, after digitizing data, spreads it out over the entire bandwidth it has available. Multiple calls are overlaid over each other on the channel, with each assigned a unique sequence code.
Code Division Multiple Access. Also known as spread spectrum, allowing several users to share a channel by allocating "codes" that allow each one to distinguish between them, even though they use the same frequency bands at the same time.
Code Division Multiple Access is one of three digital wireless telephony transmission technologies. It is the future standard of 3G. CDMA allows multiple frequencies to be used simultaneously. CDMA digitizes the data and then spreads it out over the entire bandwidth where it is less subject to interference (Spread Spectrum). The coding guarantees that only the receiver's personal signals are decoded. The CDMA idea was originally developed for military use over 30 years ago. Some US based carriers use CDMA.
Code Division Multiple Access - one of two digital cellular standards used primarily in North America. Bell Atlantic and Verizon use CDMA. CDMA is a digital technology supported by the US company Qualcomm. See GSM and TDMA.
Short for Code-Division Multiple Access, a digital cellular technology first used during World War II by the English allies using spread-spectrum techniques. Unlike competing systems, CDMA does not assign a specific frequency to each user. Instead, every channel uses the full available spectrum. Individual conversations are encoded with a pseudo-random digital sequence.
Code Division Multiple Access. A transmission system that superimposes the audio or data information onto a specific coded address waveform.
Canadian Direct Marketing Association. The national association representing direct marketers in Canada. Its purpose is to present a unified voice in matters of technology, postal affairs, education, training, and recruitment.
Code Division Multiple Access - a cellular wireless technology capable of providing 2G and 3G services.
Code-Division Multiple Access (CDMA) is a more recent digital cellular technology. CDMA is utilized mostly by Sprint PCS and Verizon Wireless.
Code Division Multiple Access. A technique for mobile technology that enables more mobile phone users to be connected at the same time because it utilizes the whole spectrum instead of allocating specific frequencies to each subscriber, which is critical for 3G technology.
Code Division Multiple Access. A type of digital mobile phone service used in the United States.
Code Division Multiple Access, a digital standard for wireless service.
Code Division Multiple Access. Digital cellular network technology used in mobile phone networks e.g. in North America and China.
Code Division Multiple Access, a technique of multiplexing also called spread spectrum, in which analog signals are converted into digital form for transmission.
Code Division Multiple Access. Standard mainly used by Verizon (GTE, Airtouch, Bell Atlantic) and Sprint PCS.
Code-Division Multiple Access, a 2G digital cellular network first launched in 1995 and--until a recent surge by 2G competitor GSM--the unchallenged leader in stateside cell service. Wireless carriers Verizon and Sprint both use CDMA.
See Code Division Multiple Access.
Code Division Multiple Access. A method whereby many radios use the same frequency
Code Division Multiple Access. A multiple access scheme that uses Direct Sequence Spread Spectrum ( DSSS) code sequences as traffic channels in a common radio channel.
Code Division Multiple Access. Technique that spreads a signal over a frequency band that is larger than the signal to gain interface immunity; users transmit different spreading codes over a communications channel.
Code Division Multiple Access. A digital spread-spectrum wireless technology championned by Qualcomm and used in its digital phones, including the forthcoming pdQ smart phones. The next generation, still under development, is called third generation (3G) and will have enough bandwidth for tasks like videoconferencing.
This stands for Code Division Multiple Access and refers to a multiple-access scheme where stations use wide-spectrum modulations and orthogonal codes to reduce the chance of interfering with each other.
Code Division Multiple Access. A technique allowing multiple users to simultaneously share a common transmission bandwidth. Each user transmits continuously, generating a controlled level of interference into other users. Each transmitter is assigned a unique signature, or code, which is combined with the useful information at the transmitter. The receiver is able to recover the desired information and reject unwanted information by means of this unique code.
Code Division Multiple Access. CDMA technology exploits the orthogonality property of certain families of PN codes in order to increase channel capacity. Typically, each user is given a unique spreading code. To communicate with a particular user, the sender must use the same code assigned to that user. This technique permits many users to operate simultaneously over the same frequency band. Gold codes and Walsh codes are often used in CDMA systems.
A type of circuit-switched mobile network with a global user base of 30 million subscribers. Likely to upgrade to CDMA-2000 before reaching UMTS level.
Code Division Multiple Access Allows reuse of scarce radio resource in adjacent areas
(code division multiple access). CDMA (code division multiple access) is the generic name for the mobile phone system that is based on this technique.
Code Division Multiple Access. A digital technology pioneered by QUALCOMM that provides crystal clear voice quality in an exciting new generation of wireless communications products and services. Using digital encoding and "spread spectrum" radio frequency (RF) techniques, CDMA provides much better and cost-effective voice quality, privacy, system capacity, and flexibility than other wireless technologies, along with enhanced services such as short messaging, e-mail and Internet access.
Code Division Multile Access. a technology where different radio's can work on the same frequency. GPS uses it.
Code Division Multiple Access is a radio technology used in the USA and The Far East. In CDMA, user's transmissions are not discriminated by radio frequencies and timeslots, but by unique codes that the mobile system will assign to each mobile user.
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Acronym for Code Division Multiple Access--a wireless network protocol used for voice and data transmission. (Verizon and Sprint operate the largest CDMA networks and both are expanding to a 1XRTT protocol).
Code Division Multiple Access - Digital cellular standard relying on code division of each channel. Primary markets are US, South Korea and Australia, though CDMA will be the access method for 3G mobile networks across the globe. CDMA is a method of spread spectrum transmission allowing a large number of users simultaneously to access a radio frequency band. As a phone gains access to the network it is assigned a unique 'pseudorandom' sequence of frequency shifts that services as a code to distinguish the phone.
A digital cellular technology that uses spread-spectrum techniques. Unlike competing systems, such as GSM, that use time-division multiplexing (TDM), CDMA does not assign a specific frequency to each user. Instead, every voice channel uses the full available spectrum. Individual conversations are encoded with a pseudo-random digital sequence.
CDMA stands for Code Division Multiple Access. This is a digital phone technology allowing many users to use a network at the same time.
A digital technologies being used by cellular service providers as a replacement of the current analog system of cellular call transmission. Digital technology reduces voice to binary computer code before it is transmitted. With CDMA, a digital voice signal is coded in the phone and is transmitted on a single radio channel with other voices. Every phone is assigned a distinct code, and calls are understandable only when filtered through a decoding chip in the phone. As a result, only the intended receiver can separate the call from background noise.
Code division multiple access. Another type of digital mobile telephony technology used as an alternative to GSM systems.
Stands for Code Division Multiple Access. The technology that splits a single signal into multiple frequencies, transmits it and then reassembles it at the receiving end.
Code Division Multiple Access - A digital, cellular radio-based system that employs spread-spectrum technology.
This refers to protocol types used in second generation and third generation mobile communication systems. CDMA enables the use of a single transmission channel by several subscribers simultaneously. Consequently, the available bandwidth can be used more effectively.
A combination of 2nd-generation and 3rd-generation mobile phone networks. A multiplexing technique in which analog signals are converted into digital form for transmission. CDMA stands for Code Division Multiple Access.
code division multiple access - CDMA is a digital spread-spectrum modulation technique used mainly with personal communications devices such as mobile phones. CDMA digitizes the conversation and tags it with a special frequency code. The data is then scattered across the frequency band in a pseudorandom pattern. The receiving device is instructed to decipher only the data corresponding to a particular code to reconstruct the signal.
Code Division Multiple Access QUALCOMM's spread spectrum air interface method. It codes each conversation expanding it 128 times, which makes it easy to decipher at receiving end.
Code Division Multiple Access. A method of digital wireless transmission that allows a large number of users to share access to a single radio channel by assigning unique code sequences to each user.
A technology used to transmit wireless calls by assigning them codes. Calls are spread out over the widest range of available channels. Then codes allow many calls to travel on the same frequency and also guide those calls to the correct receiving phone.
Code Division Multiple Access. Defines how a single channel can be allocated to support multiple users simultaneously.
Stands for Code Division Multiple Access, which is a mobile technology, operated in several countries including the USA and South Korea.
Code Division Multiple Access. A type of digital wireless technology that allows large amounts of voice and data to be transmitted on the same frequency. CDMA is second-generation cellular technology (or 2G) and is available in Canada, the United States, Pacific Asia, and Latin America. Most CDMA service providers will migrate to a high-speed data technology called 1xRTT. The CDMA phones are not listed on GSMoblies.com.
CODE DIVISION MULTIPLE ACCESS. A digital wireless technology that uses a "spread spectrum" technique to scatter a radio signal across a wide range of frequencies. CDMA provides greater total capacity than other technologies, along with outstanding voice quality and fewer dropped calls. CDMA is the technology of choice for new third-generation systems.
Code Division Multiple Access. A digital spread-spectrum wireless transmission technology that transmits data from calls across the entire frequency band with codes for proper signal recovery at the other end (see PCS).
Code Division Multiple Access is a spread spectrum approach for the digital transmission of data/voice over radio frequencies. Sound bits are digitized and the data is split into data packets that are encoded with unique identification tags. All of the data/voice is sent over a spread range of radio frequencies. The cell phone or data device receives all of the data packets but only re-assembles those packets with the correct code and transforms the broken-up bits of data into useful sound and data. This allows more traffic for a finite number of available frequencies than analog or the other digital standards.
(Code Division Multiple Access): A form of multiplexing that permits simultaneous use of a single channel by a number of users. CDMA employs digital spread spectrum technology to send the signal in a precise sequence (code) along multiple channels. The code is varied constantly, making it difficult to intercept or clone CDMA signals.
also known as CDMA-One, is one of the three wireless telephone transmission technologies, takes an entirely different approach from GSM and the similar TDMA. CDMA, after digitizing data, spreads it out over the entire bandwidth it has available. Multiple calls are overlaid over each other on the channel, with each assigned a unique sequence code. CDMA claims superiority over TDMA in terms of quality, capacity and security. CDMA was commercialised by Qualcomm of the US and is most widely used in that market. The first network using this standard was built by Hutchison in Hong Kong in 1995, with US roll-outs beginning in 1996.
Code Division Multiple Access. The code division technology was originally developed for military use over 30 years ago. CDMA is a multiple access technique, which uses code sequences as traffic channels within common radio channels - used for CDMA One (IS-95) air interface.
Code Division Multiple Access. A technique used to increase channel capacity which is associated with spread-spectrum systems. Typically each user is given a different pseudo-random spreading code. To communicate with a particular user, the sender must select the code assigned to that user. This technique can permit many users to operate simultaneously on the same frequency.
Code Division Multiple Access. CDMA technology was originally developed for military use in the late 1960's, and is a multiple access technique, using sequenced code to divide traffic channels within the same radio channels.
Code Division Multiple Access. A digital wireless technology that works by converting analog information, such as speech, into digital information, which is then transmitted as a radio signal over a wireless network. CDMA uses spread-spectrum technology, decreasing potential interference while achieving privacy. CDMA technology is the basis for third-generation (3G) wireless technologies which offer increased voice capacity and provide higher data rates than 2G and 2.5G networks.
(Code Division Multiple Access) Transmission technique that uses simultaneous transmission and reception of several messages, each with a unique identity. (e.g., CDMA can be used between a cell phone and a radio base station).
Code Division Multiple Access. A digital transmission technique based on direct sequence spread spectrum.
Code-Division Multiple Access (CDMA) is a cellular technology widely used in North America. There are currently three CDMA standards: CDMA One, CDMA2000 and W-CDMA. CDMA technology uses UHF 800Mhz-1.9Ghz frequencies and bandwidth ranges from 115Kbs to 2Mbps.
U.S. wireless carriers, such as Sprint PCS and Verizon, use CDMA to allocate bandwidth for users of digital wireless devices. CDMA distinguishes between multiple transmissions carried simultaneously on a single wireless signal. It carries the transmissions on that signal, freeing network room for the wireless carrier and providing interference-free calls for the user. Several versions of the standard are still under development. CDMA promises to open up network capacity for wireless carriers and improve the quality of wireless messages and users' access to the wireless airwaves. It's an alternative to GSM, which is popular in Europe and Asia (see GSM).
CDMA stands for code division multiple access. CDMA is a digital wireless technology that allows for greater security, less background noise, and softer handoffs.
(Code Division Multiple Access) A technology for digital transmission of radio signals between, for example, a mobile telephone and a radio base station. In CDMA, a frequency is divided into a number of codes. See also IS-95.
code-division multiple access (CDMA) refers to any of several protocols used in so-called second-generation (2G) and third-generation (3G) wireless communications.
Code Division Multiple Access. A technology for digital transmission of radio signals based on spread spectrum techniques where each voice or data call uses the whole radio band and is assigned a unique code.
Code Division Multiple Access. Access method for several stations to go through a single transponder which uses spread spectrum modulations and orthogonal codes.
ode ivision ultiple ccess: A cellular technology widely used in North America that allows the usage of multiple channels by providing each user a code. Originally developed for military purposes, CDMA is also referred to as 2G technology.
Also called "blended channel use," this technology spreads a signal over a greater bandwidth than a traditional analog system, and increases capacity by making all frequencies available at all times. The Alltel choice for digital technology, CDMA is compatible on 800 mhz phones.
Code Division Multiple Access. A spread-spectrum digital cellular radio system that used different codes to distinguish users.
(code-division multiple access): A digital cellular technology used from transmitting cellular calls. Others are TDMA (time-division multiplexing), and GSM ( global system for mobile communications, the leading digital cellular system in Europe and Asia.
A digital wireless technology used in radio communication for transmission between a mobile phone and a radio base station. The technology was originally developed for military use in the late 1960's, and is a multiple access technique, using sequenced code to divide traffic channels within the same radio channels.
Code Division Multiple Access. A method for transmitting many simultaneous signals over a shared portion of the spectrum. GPS uses CDMA techniques with codes for their unique cross-correlation properties. The foremost application of CDMA is the digital cellular phone technology that operates in the 800MHz and 1.9GHz (PCS) bands. CDMA phones are noted for their excellent call quality and long battery life, and some phones can switch between both bands. CDMA is less costly to implement, requiring fewer cell sites than the GSM and TDMA digital cellphone systems and providing three to five times the calling capacity. It provides more than 10 times the capacity of the analog cellphone system (AMPS). CDMA has become widely used in North America and is also expected to become the third-generation (3G) technology used in the GSM system.
Code-Division Multiple Access, a 2G digital cellular network first launched in 1995. CDMA is predominantly a North American standard.
Code Division Multiple Access. Also called Spread Spectrum. A type of digital cellular phone service.
A technology used to send digital transmissions between a mobile phone and a radio base station. It allows for multiple transmissions to be carried simultaneously on a single wireless channel.
Code Division Multiple Access. A spread spectrum access technology that assigns a code to each multiple access stream of data bits, transmits the spread data streams, and then, at the receiver, despreads and reassembles the data streams to their original format.
Code Division Multiple Access (see also TDMA)
Code division multiple access is a method of digital communication in which multiple communication streams are orthogonally coded, enabling them to share a common frequency channel. It is a popular technique used in a number of widely used mobile communication systems.
Code division multiple access. A multiple access technique that utilizes full-satellite bandwidth and whole time slots with the use of special coding-decoding techniques. Suitable to military use due to immunity to interference jamming.
Code Division Multiple Access - A digital cellular technology that uses spread-spectrum techniques.
Code Division Multiple Access. A spread spectrum air interface technology used in some digital cellular, personal communications services and other wireless networks.
A multiple access technique in which each user is given access to the entire channel all the time, with users separated by giving each a unique spreading code.
using military technology originally developed by the Allies in WWII, it spreads transmisions over all available frequencies. Conversations are assigned a code which is used to reassemble it upon arrival. This allows multiple calls to be carried over one channel.
An air interface technology that was developed by the U.S. military and commercialized by the U.S. company Qualcomm. CDMA supports SMS with a message length of 120 characters. With CDMA, each conversation is digitized and then tagged with a code. The mobile phone receives a signal to locate that particular code and it then deciphers the conversation off the airwaves. It codes each conversation expanding it 128 times, making it easy to decipher at the receiving end.
Code Division Multiple Access. "Spread spectrum" method of allowing multiple users to share the radio frequency spectrum by assigning each active user an individual code. The base signal is mixed with a much higher rate individual code, thereby, spreading the signal across the spectrum. It was originally developed as a technique against jamming.
Code division multiple access. Refers to a multiple-access scheme where stations use spread-spectrum modulations and orthogonal codes to avoid interfering with one another.
Code Division Multiple Access. An access technique in which every earth station may transmit at the same frequency and at the same time, but only at a given, limited power level. This technique requires that each earth station use a unique identifying code, which is modulated with the communications signal. CDMA is the access technique used with spread-spectrum data distribution and some VSAT and mobile satellite systems.
A digital communication technology used by some carriers to provide PCS service. Other technologies used are TDMA and GSM.
Code Division Multiple Access. A digital mobile transmission technology used in cellular telephone communications, personal communication services and other mobile communication systems. CDMA allows more than one mobile user to simultaneously occupy a single radio frequency band with reduced interference
Code Division Multiple Access got its start as a military technology, developed by the Allies in WWII. Much like data sent over the Internet, CDMA conversations are "spread" when sent, then reassembled upon arrival. The technology allows multiple calls to be carried over one channel. CDMA is the fastest-growing transmission technology and is basically the multiplexing platform for 3G. It is considered an efficient and secure technology, and it operates at lower power, which conserves batteries. CDMA carriers: Verizon, Sprint PCS. CDMA champion: Qualcomm. Estimated number of users: 67 million.
A multiple access scheme by using code sequences as traffic channels in a common radio channel.
Code Division Multiple Access, Acceso múltiple mediante división de código
Code Division Multiple Access. A new form of digital phone service that assigns a code to all speech bits, sends a scrambled transmission of the encoded speech over the air and reassembles the speech to its original form at the other end. CDMA can send up to 10 times the amount of information over the same broadcast spectrum as analog transmission. Compare to TDMA.
Collision Detection Multiple Access
Code Division Multiple Access; also known as spread spectrum, CDMA cellular systems utilise a single frequency band for all traffic, differentiating the individual transmissions by assigning them unique codes before transmission. There are a number of variants of CDMA (see W-CDMA, B-CDMA, TD-SCDMA et al)
Short for Co de- ivision ultiple ccess, a digital cellular technology that uses spread-spectrum techniques. Unlike competing systems, such as GSM, that use TDMA, CDMA does not assign a specific frequency to each user. Instead, every channel uses the full available spectrum. Individual conversations are encoded with a pseudo-random digital sequence. CDMA consistently provides better capacity for voice and data communications than other commercial mobile technologies, allowing more subscribers to connect at any given time, and it is the common platform on which 3G technologies are built.
Refers to Code Division Multiple Access.
Code-Division Multiple Access, a 2G digital cellular network first launched in 1999 to replace the analog AMPS network. Nevertheless, the unchallenged leader in Australia continues to be GSM.
Code division multiple access, a mobile network technology used mainly in North America, Latin America and South Korea. The upgrade to 3G is 1xRTT and 1xEV. Later stages of 1xEV qualify under the ITU definition as 3G.
Cod Division Multiple Access. US carriers use CDMA technology to power their wireless networks. CDMA allows for multiple transmissions to be carried simultaneously on a single wireless channel. CDMA is a 2G wireless technology that is an alternative to GSM – the standard in Europe and Asia.
A type of wireless protocol which allows multiple users to share the radio frequency spectrum by assigning each active user an individual code.
A generic term that describes a wireless air interface based on Code Division Multiple Access technology
Code Division Multiple Access. A numerical standard for data transmission.
Code Division Multiple Access. CDMA is a digital wireless technology that works by converting speech into digital information, which is then transmitted as a radio signal over a wireless network. Using a unique code to distinguish each call, CDMA uses spectrum efficiently, enabling more people to share the airwaves simultaneously without static, cross-talk or interference. In 1999, the ITU selected CDMA as the industry standard for new 3G wireless systems.
Code Division Multiple Access. Developed by Qualcomm, this is the digital technology employed by TELUS Mobility's PCS network, giving users access to the most advanced features, superior call quality, fewer dropped calls, greater privacy and longer battery life than traditional analog networks.
Code Division Multiple Access (CDMA) is a standard that separates voice signals using spread spectrum technology.
CDMA is an acronym for Code Division Multiple Access. CDMA technology is a multiple access technique, using sequenced code to divide traffic channels within the same radio channels.
Code Division Multiple Access -- A way to increase channel capacity by using code sequences as traffic channels in a common radio channel. This technology was originally developed for military use over 30 years ago. Also -- A digital signal multiplexing technique where each signal is split into many chips of data, each of which is tagged with a particular code. During transmission, the chips are spread over a band of frequencies, then reassembled at the receiving end. This technique permits many different signals to be co-located in the same frequency band.
A technology for digital transmission of radio signals between a mobile phone and a radio base station, for example. In CDMA, a frequency is divided into a number of codes.
One of several digital wireless transmission methods in which signals are encoded using a specific pseudo-random sequence, or code, to define a communication channel. A receiver, knowing the code, can use it to decode the received signal in the presence of other signals in the channel. This is one of several "spread spectrum" techniques, which allows multiple users to share the same radio frequency spectrum by assigning each active user a unique code. CDMA offers improved spectral efficiency over analog transmission in that it allows for greater frequency reuse. Other characteristics of CDMA systems reduced dropped calls, increase batter life and offer more secure transmission.
Code Division Multiple Access - A global Mobile Wireless technology based on a method of sharing frequency among many users by encrypting each user's signal using a different code.
Stands for Code Division Multiple Access- which doesn't explain much at all. It is a network technology that provides consistent transmission coverage over large areas. CDMA is better than analogue transmission in the areas of reduced call dropping, battery power conservation, more secure transmission and increased service options. It doesn't have the bandwidth of the so called 3G networks, but offer very good coverage throughout Australia.
arrier ivision ultiple ccess. A form of multiplexing.
A wireless digital technology in which a unique code is assigned to each word in a conversation. These codes are then scrambled and sent over a wireless channel from one wireless phone to another. CDMA's unique coding structure filters all the codes and reassembles them in the correct order so that significantly more people can carry on a separate conversation on the same frequency without causing interference or static. CDMA 1X is the next generation of CDMA technology and is available in all U.S. Cellular markets.
technique used to share the same bandwidth between different channels using codes. The code is a signature multiplexed with the signal and used to recover it.
Code Division Multiple Access, a cellular technology. See also: Global System for Mobile Communications (GSM).
The type of digital cellular phone network used throughout most of the United States, but rare elsewhere in the world. CDMA stands for Code Division Multiple Access, and CDMA2000 1x is the third-generation, or 3G, extension to which CDMA cellular operators are upgrading their networks.
Code Division Multiple Access - CDMA is a "spread spectrum" technology. This means that it spreads the information contained in a particular signal over a much greater bandwidth than the original signal. When implemented in a cellular telephone system, CDMA technology offers numerous benefits to the cellular operators.
A digital cellular technology that uses spread-spectrum techniques. With CDMA, every channel uses the full available spectrum and individual conversations are encoded with a pseudorandom digital sequence or frequency-hopping schedule.
Code Division Multiple Access - a generic term for a type of digital mobile telephony technology which supports a number of mobile connections. This technique is used by some alternative systems to GSM. See also W-CDMA.
Code Division Multiple Access; also known as IS-95. This is one of the newer digital technologies in use in the US, Canada, Australia, and some southeastern Asian countries (e.g. Hong Kong and South Korea). CDMA differs from GSM and TDMA by its use of spread spectrum techniques for transmitting voice or data over the air. Rather than dividing the radio frequency spectrum into separate user channels by frequency slices or time slots, spread spectrum technology separates users by assigning them digital codes within the same broad spectrum. Advantages of CDMA include higher user capacity and immunity from interference by other signals. Used in either 800 MHz or 1900 MHz frequency bands.
Abbreviation for code-division multiple access. A coding scheme in which multiple channels are independently coded for transmission over a single wideband channel using an individual modulation scheme for each channel.
Code Division Multiple Access. Technology (by QualComm) for sharing a particular part of the radio spectrum for multiple users as efficient as possible. CDMA is a technique used for mobile phones and one of the competing technologies is TDMA. CDMA is widely used in for example Korea.
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Circuit Switching
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CDMA definition