| 摘要 |
Provided is a bit interleaved coded modulation-iterative decoding (BICM-ID) technique suffering a small loss in a transfer rate. A BICM-ID technique allowing a decoder to treat a small processing quantity is also provided. Encoding is carried out according to a code based on an iterative code. Encoded bits are reordered during interleaving processing, subjected to multi-valued modulation through extended mapping, and then transmitted. The extended mapping includes number-of-bits thinning processing of thinning l bits into m bits (m<l), and non-gray mapping. During the number-of-bits thinning processing, at least one of a predetermined number of bits is determined with only one of interleaved bits.
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