| 摘要 |
A communication system for transmitting a six-phase modulated signal and including an efficient error correction system suitable for the six-phase modulated signal is disclosed. A transmitting apparatus comprises a ternary error correction encoding circuit (103) for generating a ternary transmit sequence (134), a parity generation circuit (105) for generating a parity (135), a parity insertion circuit (106) for inserting the parity (135) into a binary transmit sequence, and a six-phase modulator (107) for performs six-phase modulation. A receiving apparatus comprises a parity generation circuit (125) for generating a parity (142), a parity separation circuit (126) for separating a received parity (143), a parity comparison circuit (127) for calculating a difference between the parity (142) and the received parity (143), a syndrome calculation circuit(123) for calculating a syndrome, a ternary error correction decoding circuit (128) for producing a ternary decoded sequence (147), a high-order digit correction circuit (129) for producing a binary decoding sequence (148), and a 6-ary to binary conversion circuit (130) for producing a binary received signal (149) is obtained from the ternary decoded sequence (147) and binary decoding sequence (148).
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