Adaptive widely linear minimum output energy algorithm for DS-CDMA systems

Author

Jeon, Jae-Jin ; Andrews, Jeffrey G. ; Sung, Koeng-Mo

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea

Volume

3

fYear

2005

Firstpage

2117

Abstract

A novel blind widely linear (WL) minimum output energy (MOE) algorithm is proposed for the CDMA receiver. Whereas the conventional WL algorithms are only applicable to real-valued modulation, the proposed receiver is applicable to complex-valued modulation. The blind WL-MOE filter is analyzed, and the convergence properties of an adaptive implementation are derived. Simulation results confirm that the proposed algorithm has higher steady-state SINR and faster convergence speed than the conventional MOE algorithm but cannot outperform the conventional WL-MOE due to severer constraints.

Keywords

adaptive filters; adaptive modulation; code division multiple access; convergence of numerical methods; gradient methods; radio receivers; spread spectrum communication; stochastic processes; DS-CDMA receiver; adaptive WL-MOE filter; complex-valued modulation; convergence property; stochastic gradient method; widely linear minimum output energy algorithm; Adaptive filters; Binary phase shift keying; Convergence; Detectors; Multiaccess communication; Multiple access interference; Multiuser detection; Nonlinear filters; Signal processing; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2005. ICC 2005. 2005 IEEE International Conference on

Print_ISBN

0-7803-8938-7

Type

conf

DOI

10.1109/ICC.2005.1494711

Filename

1494711