| 摘要 |
A decoder receives in parallel plural copies of a transmitted codeword sent along different communication channels in a space diversity scheme, and encoded as LDPC codewords. The received copies are concatenated into a global LDPC codeword, which is decoded using a global parity check matrix built based on the LDPC parity check matrix of the code used for encoding. The global matrix has the corresponding LDPC parity check matrix on its diagonal and null elements elsewhere. Decoding may be done in a single iteration of the belief propagation algorithm, and selecting a decoded codeword according to a lowest value of a criterion applied to each decoded codeword. |
