Coder-decoder for purged extended golay (22,7) codes

摘要

Transmitting and receiving apparatus for transmitting data which includes a purged extended Golay (22,7) code encoder at the transmitter for encoding digital data into constant weight unbalanced codewords representative of the digital data. The constant weight unbalanced codewords contain error correction bits and are preferably transmitted as balanced codewords. When the receiver decodes the original digital data, improved tracking and acquisition of the transmitted data is achieved.