MODULATION DEVICE, DEMODULATION DEVICE, MODULATION/DEMODULATION SYSTEM, MODULATION METHOD, DEMODULATION METHOD, MODULATION PROGRAM, COMPUTER-READABLE RECORDING MEDIUM CONTAINING THE MODULATION PROGRAM, DEMODULATION PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM CONTAINING THE DEMODULATION PROGRAM

摘要

When a coding processing unit 12 of a multi-level modulation apparatus 1 maps REPETITION bits to transmission data, it is possible to allocate symbols including the REPETITION bits at signal points of four corners of a signal constellation by mapping the REPETITION bits to specific bit locations of the symbols as a result of segmenting the transmission data after mapping into plural symbols, and thus an error rate can be reduced. <IMAGE>