Title :
Blind uplink channel estimation and multiuser detection for wideband CDMA
Author :
Jiang, Bofeng ; Wu, Xiaojun ; Yin, Qinye
Author_Institution :
Inst. of Inf. Eng., Xian Jiaotong Univ., China
Abstract :
In wideband CDMA systems, the information symbols transmit with high rate. However, the multiple propagation paths can cause both multiple access interference (MAI) and intersymbol interference (ISI). The MAI and ISI must be considered simultaneously. In this paper, under the condition of known spreading code and the finite alphabet, a blind channel estimation method is proposed for wideband CDMA uplink. Based on the estimated channel, a linear minimum mean square error (MMSE) multiuser detector is constructed. The validity of the method is demonstrated by computer simulation
Keywords :
code division multiple access; intersymbol interference; least mean squares methods; mobile radio; multipath channels; multiuser channels; radio links; radiofrequency interference; signal detection; CDMA uplink; ISI; MAI; MMSE multiuser detector; W-CDMA; blind channel estimation method; finite alphabet; intersymbol interference; linear minimum mean square error multiuser detector; multiple access interference; multiuser detection; spreading code; wideband CDMA uplink; Blind equalizers; Channel estimation; Computer simulation; Detectors; Intersymbol interference; Mean square error methods; Multiaccess communication; Multiple access interference; Multiuser detection; Wideband;
Conference_Titel :
Signal Processing Proceedings, 2000. WCCC-ICSP 2000. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-5747-7
DOI :
10.1109/ICOSP.2000.893450
