| 摘要 |
A communication method for transmitting and receiving a coded signal is provided. In a transmitting end, the method holds (determines) control information for specifying an insertion position and an insertion amount to insert a redundant signal known to the receiving apparatus into an information data sequence, generates a coded signal sequence by encoding an information data sequence, generates a transmission signal by inserting the redundant signal into the coded signal sequence based on the held control information, and transmits the generated transmission signal. In a receiving end, the method receives the transmission signal as a received signal, holds likelihood information for a redundant signal contained in the received signal, calculates a likelihood from the received signal, substitutes the likelihood information for a likelihood corresponding to the redundant signal included in the calculated likelihood and demodulates the signal.
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