Title :
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
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;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1346034
