Complementary code keying. A modulation technique used by IEEE 802.11b-compliant wireless LANs for transmission at 5.5 and 11 Mbps.

Complimentary Code Keying- A modulation scheme that transforms data blocks into complex codes and is capable of encoding several bits per block.

Complementary code keying is a modulation (or signal encoding) technique for data transmission and is used by 802.11b. Modulation varies a carrier signal in order to encode information. CCK is a variation of CDMA (a multiplexing technique used in mobile telecommunications) and is slower than OFDM.

Ching-Chuan Kang AFB

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