Title :
Adaptive space-time feedforward/feedback detection for CDMA
Author :
Smee, J.E. ; Schwartz, Stuart C.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
Abstract :
We investigate linear and nonlinear minimum mean-square error (MMSE) multiuser detectors for high data rate wireless code-division multiple access (CDMA) networks. The reverse link spacetime detectors comprise an antenna array followed by a feedforward filter (FFF) which processes parallel chip matched filter (CMF) output samples and a feedback filter (FBF) which processes detected symbols of all in-sector users. We explore adaptation issues, calculate outage probabilities, and isolate the effects of antenna, diversity, and interference suppression gains for Rayleigh and Ricean multipath fading channels with varying timing control
Keywords :
Rayleigh channels; Rician channels; adaptive signal detection; antenna arrays; code division multiple access; data communication; diversity reception; feedforward; interference suppression; intersymbol interference; least mean squares methods; matched filters; multipath channels; spread spectrum communication; CDMA; CDMA networks; Rayleigh multipath fading channels; Ricean multipath fading channels; adaptation issues; adaptive space-time feedforward/feedback detection; antenna array; antenna effects; diversity; feedback filter; feedforward filter; high data rate wireless code-division multiple access networks; interference suppression gains; linear minimum mean-square error multiuser detectors; nonlinear minimum mean-square error multiuser detectors; outage probabilities; parallel chip matched filter output samples; reverse link spacetime detectors; varying timing control; Adaptive arrays; Antenna arrays; Antenna feeds; Detectors; Field-flow fractionation; Matched filters; Multiaccess communication; Output feedback; Probability; Sensor arrays;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on
Conference_Location :
Annapolis, MD
Print_ISBN :
0-7803-5599-7
DOI :
10.1109/SPAWC.1999.783011
