Title :
Joint channel estimation and interference cancellation for multipath long-code DS-CDMA
Author :
Zheng, Zi-Wei ; Zhu, Yi-Sheng
Author_Institution :
Coll. of Inf. Eng., Dalian Maritime Univ., China
Abstract :
In this paper, channel estimation and interference cancellation techniques are presented jointly for multipath DS-CDMA systems employing long spreading codes. The linear prediction (LP) approach is applied to estimate the channel response of the desired user, which is based on interference cancellation. The minimum-mean-square-error (MMSE) criterion is used to make the final statistical decision based on the estimated parameters. It is shown that the proposed receiver performs well in the presence of frequency-selective multipath fading.
Keywords :
channel estimation; code division multiple access; fading channels; interference suppression; mean square error methods; multipath channels; prediction theory; radiofrequency interference; spread spectrum communication; MMSE criterion; channel estimation; channel response estimation; frequency-selective multipath fading; interference cancellation; joint estimation/cancellation technique; linear prediction approach; long spreading codes; minimum-mean-square-error criterion; multipath DS-CDMA systems; receiver; Additive noise; Channel estimation; Educational institutions; Fading; Frequency; Interference cancellation; Multiaccess communication; Parameter estimation; Signal processing; Spread spectrum communication;
Conference_Titel :
Circuits and Systems, 2002. APCCAS '02. 2002 Asia-Pacific Conference on
Print_ISBN :
0-7803-7690-0
DOI :
10.1109/APCCAS.2002.1115184
