Title :
A new blind receiver for downlink DS-CDMA communications
Author :
Li, Kemin ; Liu, Hui
Author_Institution :
Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA
fDate :
7/1/1999 12:00:00 AM
Abstract :
A linear receiver is proposed for downlink DS-CDMA communications over unknown frequency-selective fading channels. The new receiver exploits the fact that all synchronized downlink signals go through the same channel and recovers the desired signal with a constrained channel equalizer followed by a despreader. Such a scheme allows the receiver to operate blindly in a time varying environment for both periodic CDMA and aperiodic CDMA systems.
Keywords :
blind equalisers; code division multiple access; fading channels; land mobile radio; multipath channels; multiuser channels; radio links; radio receivers; spread spectrum communication; time-varying channels; aperiodic CDMA system; blind receiver; constrained channel equalizer; desired signal recovery; despreader; downlink DS-CDMA communications; frequency-selective fading channels; linear receiver; periodic CDMA system; synchronized downlink signals; time varying environment; Base stations; Data models; Downlink; Equalizers; Finite impulse response filter; Frequency synchronization; Frequency-selective fading channels; Multiaccess communication; Multiple access interference; Time varying systems;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.775251
