A new ML detection algorithm for orthogonal multicode system in Nakagami fading channel

Author

Shengqun Wei ; Yunpeng Cheng ; Jinlong Wang

Author_Institution

Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., China

Volume

1

fYear

2004

Firstpage

242

Abstract

The paper proposes a new noncoherent detection algorithm, based on the maximum-likelihood (ML) criterion, for orthogonal multicode (OM) systems in Nakagami fading channels. Simulation results show that the new ML algorithm can provide at least 0.7 dB performance gain over the conventional matched-filter (MF) algorithm in uncoded systems. Finally, a simplified version of the ML algorithm with significant complexity reduction and negligible performance degradation is also presented.

Keywords

code division multiple access; computational complexity; fading channels; maximum likelihood detection; spread spectrum communication; CDMA; ML detection algorithm; Nakagami fading channel; complexity reduction; matched-filter algorithm; maximum-likelihood detection; noncoherent detection algorithm; orthogonal multicode system; spread spectrum communication; Bandwidth; Degradation; Detection algorithms; Fading; Maximum likelihood detection; Multiaccess communication; Performance gain; Programmable logic arrays; Spread spectrum communication; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on

Conference_Location

Chengdu

Print_ISBN

0-7803-8647-7

Type

conf

DOI

10.1109/ICCCAS.2004.1346034

Filename

1346034