Title :
An adaptive asynchronous CDMA multiuser detector for frequency-selective Rayleigh fading channels
Author :
Tjhung, Tjeng Thiang ; Xue, Xiaoming ; Dai, Yongmei ; Wong, Kar Ngai ; He, Ping
Author_Institution :
Center for Wireless Commun., Nat. Univ. of Singapore, Singapore
fDate :
7/1/2002 12:00:00 AM
Abstract :
An adaptive asynchronous code-division multiple-access (CDMA) multiuser detector is proposed that uses a recently derived extended Kalman filter based algorithm (see Lim, T.J. and Rasmussen, L.K., IEEE Trans. Commun., vol.45, p.213-20, 1997) to perform joint data detection and parameter tracking in frequency-selective Rayleigh fading channels. A receiver structure based on this adaptive multiuser detector is presented and its performance in terms of parameter tracking and bit error rate (BER) is investigated. The receiver is a form of an adaptive RAKE that exploits multipaths to achieve performance gain
Keywords :
Kalman filters; Rayleigh channels; cellular radio; code division multiple access; error statistics; indoor radio; multipath channels; multiuser channels; parameter estimation; radio receivers; signal detection; spread spectrum communication; tracking filters; BER; CDMA detector; Rayleigh fading channels; adaptive RAKE receiver; adaptive multiuser detector; asynchronous multiuser detector; bit error rate; cellular mobile communications; channel parameter estimation; code-division multiple-access; data detection; extended Kalman filter; frequency-selective channels; indoor wireless communications; multipaths; parameter tracking; spread-spectrum systems; AWGN; Bit error rate; Delay estimation; Detectors; Fading; Frequency estimation; Multiaccess communication; Propagation delay; RAKE receivers; Wireless communication;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2002.1015360
