Bit-interleaved coded modulation for OFDM with different orthogonal bases

Author

Gao, Xinying ; Zhang, Haixia ; Yuan, Dongfeng

Author_Institution

Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China

Volume

2

fYear

2004

fDate

29 Aug.-1 Sept. 2004

Firstpage

947

Abstract

Bit-interleaved coded modulation serves as a coded-modulation scheme with low complexity over OFDM transmission. In this paper, BICM-OFDM system is studied with different orthogonal bases: DFT and DWPT. The BER performance of these two cases are the same over AWGN channel, which is consistent with theory, while DWPT case performs better than DFT over multipath fading channel due to higher level of spectral containment. There´s no performance difference for different numbers of subchannel for fixed-scale wavelet packet transform. And it´s important to make tradeoff between BER performance and wavelet filter complexity.

Keywords

AWGN channels; OFDM modulation; Rayleigh channels; discrete Fourier transforms; discrete wavelet transforms; error statistics; interleaved codes; modulation coding; multipath channels; AWGN channel; BER; BICM-OFDM system; DFT; DWPT; bit error rate; bit-interleaved coded modulation; discrete Fourier transform; discrete wavelet packet transform; fixed-scale wavelet packet transform; multipath fading channel; orthogonal frequency division multiplexing; AWGN; Convolution; Delay; Discrete Fourier transforms; Discrete wavelet transforms; Fading; Filters; Interleaved codes; Modulation coding; OFDM modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2004 and the 5th International Symposium on Multi-Dimensional Mobile Communications Proceedings. The 2004 Joint Conference of the 10th Asia-Pacific Conference on

Print_ISBN

0-7803-8601-9

Type

conf

DOI

10.1109/APCC.2004.1391856

Filename

1391856