Systems that transmit one voice circuit per channel. Each conversation gets its own unique radio channel.
A digital radio technology that divides the available spectrum into separate radio channels. FMDA is normally used in conjunction with Time Division Multiple Access (TDMA) or Code Division Multiple Access (CDMA).
A multiple access scheme that divides an allocated spectrum (see Frequency allotment) into different radio channels.
A type of air interface which describes a technique of adding signal carrying capacity to a given bandwidth by dividing it up into smaller frequency bands.