M-ARY DUAL CARRIER MODULATION DEMODULATION METHOD BASED ON MULTI-BAND ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM AND APPARATUS THEREOF

摘要

The present invention relates to a M-ary DCM demodulation method and apparatus based on MB-OFDM system. MB-OFDM-based M-ary DCM demodulation method according to the present invention comprises the steps of: receiving a M- DCM signal pair based on MB-OFDM, selecting a first DCM signal of high reliability among the M-DM DCM signal pair, 1, detecting a temporary candidate symbol from a DCM signal, further selecting C-1 candidate symbols adjacent to the temporary candidate symbol in the first DCM signal, and selecting a total of C (C is a natural number less than M) symbols Selecting a symbol, selecting a symbol corresponding to a bit string of C symbols as a candidate symbol in a second DCM signal paired with the first DCM signal, and receiving each received signal value of the M-ary DCM signal pair; Demodulating using the distance between the C candidate symbols. As described above, even when demodulating considering only a relatively small number of candidate symbols among all the symbols included in the DCM signal, compared to the prior art, efficient performance can be obtained.;M, MB-OFDM, DCM, MDCM