RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, AND RADIO TERMINAL

摘要

PROBLEM TO BE SOLVED: To provide a radio communication system, transmitter, receiver, and radio communication method for suppressing reduction in transmission efficiency of data and detecting an interference signal.

SOLUTION: A radio communication system of the invention comprises a plurality of radio terminals performing multicarrier communication. A transmission side radio terminal has an error correction encoding part generating data and an error correction code by encoding the data to a systematic code; and a code arrangement part arranging an error correction bit of the error correction code to a verification target subcarrier in which superposition of an interference wave is expected; and a transmission part performing multicarrier transmission of the data and the error correction bit arranged to the verification target subcarrier. A reception side radio terminal has a likelihood sum total calculation part decoding the data for each set of the error correction bits arranged to the plurality of verification target subcarriers and calculating sum totals of obtained likelihood; and an interference subcarrier determination part comparing the sum totals of likelihood among the sets and estimating an interference subcarrier in which the interference wave exists.

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