DISTRIBUTION MATCHING CIRCUIT, DISTRIBUTION MATCHING TERMINATION CIRCUIT, DISTRIBUTION MATCHING METHOD, DISTRIBUTION MATCHING TERMINATION METHOD AND OPTICAL TRANSMISSION SYSTEM

摘要

In a distribution matching circuit (1), output data of a plurality of LUTs forming a hierarchical tree structure sequentially designates a combination of signal point groups in a signal space managed by an LUT in an immediately lower level, and signal point information after distribution matching is output for each LUT in the lowermost level.