Reuse of multiple input hardware using LDPC codes

摘要

The network controller receives substantially simultaneously the data transmitted from multiple client nodes. Network controller assigning one or more subcarriers of the orthogonal frequency division multiple access frequency spectrum for each client node. Client node to be mapped to subcarriers by transmitting substantially simultaneously MLDPC code words are encoded in a parity check matrix, the number of rows m 'is dependent on the code rate, which is assigned to. It then calculates the bit log-likelihood ratio for each received bit of the code word, network controller, arranged in each code word so as to coincide with the equivalent parity check matrix this bit log likelihood ratio. Network controller decodes the codeword using an equivalent parity check matrix.