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

fYear

2012

fDate

27-31 Aug. 2012

Firstpage

311

Lastpage

315

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Mobile Computing Conference (IWCMC), 2012 8th International

Conference_Location

Limassol

Print_ISBN

978-1-4577-1378-1

Type

conf

DOI

10.1109/IWCMC.2012.6314222

Filename

6314222