Subchannel encoding device, subchannel decoding device, subchannel coding method, subchannel decoding method, and subchannel multiple optical communication system

摘要

M × N (m)Two or more integersN isDivide one subchannel into n groupsM × Based on the signal-to-noise ratio of N subchannelsShaping the probability distribution of transmit modulation symbols for each groupInformation bit stringA probability distribution shaping coding part (21) which converts the transmission modulation symbol of each group into a bit after shaping corresponding to the probability distribution of the transmitted modulation symbol andFrom the string after shapingM × A subchannel signal generator (22) for generating respective subchannel signals in n subchannels andM generated by a subchannel signal generator × Multiplexing n subchannel signalsA subchannel coding apparatus (11) comprising a signal multiplexing section (26) for generating a subchannel multiplex signal is constructed.