Method and system for forward error correction decoding with parity check for use in low complexity highly-spectrally efficient communications

摘要

A receiver receives an inter-symbol correlated (ISC) signal with information symbols and a corresponding parity symbol. Values of information symbols are estimated utilizing parity samples that are generated from the parity symbols. One or more maximum likelihood (ML) decoding metrics are generated for the information symbols. One or more estimations are generated for the information symbols based on the one or more ML decoding metrics. A parity metric is generated for each of the one or more generated estimations of the information symbols. The parity metric is generated by summing a plurality of values of one of the generated estimations to generate a sum, and wrapping the sum to obtain a parity check value that is within the boundaries of a symbol constellation utilized in generating the information symbols.

主权项

1. A transmitter comprising:
a symbol mapper circuit configured to map a plurality of information bits to a plurality of information symbols of an output symbol stream; a symbol-domain parity value insertion circuit configured to:
process said plurality of information symbols according to a parity function to generate a parity value; andadd said parity value to said output symbol stream prior to said output symbol stream being transmitted onto a communication channel; anda transmitter front-end circuit configured to transmit the output symbol stream, after addition of the parity value, onto the communication channel.