Title :
A novel adaptive bit loading algorithm for BICM-OFDM system
Author :
Hao, Wang ; Hongwen, Yang ; Jun, Tian
Author_Institution :
Commun. Technol. Lab., Fujitsu R&D Center Co., Ltd., Beijing, China
Abstract :
In this paper, we present a bit-loading scheme for coded OFDM systems. In the proposed scheme, the subcarriers with multilevel modulation are decomposed into multiple binary equivalent channels each with an effective bit-level signal-to-noise ratios (SNR) depending only on the symbol-level SNR and the bit position. Thus, the problem of allocating bits among subcarriers has been converted to simply selecting the best binary channels. Simulation results have verified the superior performance to the classical algorithm.
Keywords :
OFDM modulation; adaptive codes; binary codes; channel coding; modulation coding; BICM-OFDM system; adaptive bit loading algorithm; binary channel; bit allocation; bit position; bit-interleaved coded modulation; bit-level SNR; bit-level signal-to-noise ratio; coded OFDM system; multilevel subcarrier modulation; multiple binary equivalent channel decomposition; symbol-level SNR; Bit error rate; Loading; Measurement; OFDM; Phase shift keying; Signal to noise ratio; BICM; Bit Loading; OFDM;
Conference_Titel :
Wireless Communications and Mobile Computing Conference (IWCMC), 2012 8th International
Conference_Location :
Limassol
Print_ISBN :
978-1-4577-1378-1
DOI :
10.1109/IWCMC.2012.6314222
