Title :
Modified multi-rate detection for frequency selective Rayleigh fading CDMA channels
Author :
Ma, Jinwen ; Ge, Hongya
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
A LMMSE multi-rate detector for synchronous CDMA frequency selective Rayleigh fading channels is proposed. A comparative study between the conventional multi-rate RAKE receiver and suboptimal multi-rate detector is presented. The conventional multi-rate RAKE receiver is severely limited by the near-far effects in the multiuser environment. Both suboptimal multi-rate receiver and LMMSE multi-rate detector have the near-far resistance while preserving the multipath diversity gain. The simulation results show that the proposed LMMSE multi-rate detector can improve the performance compared to the proposed suboptimal multirate receiver
Keywords :
Rayleigh channels; code division multiple access; diversity reception; least mean squares methods; multipath channels; multiuser channels; personal communication networks; radio receivers; signal detection; LMMSE multi-rate detector; PCS; frequency selective Rayleigh fading channels; modified multi-rate detection; multi-rate RAKE receiver; multipath diversity gain; multiuser environment; near-far effects; performance; simulation results; suboptimal multi-rate detector; suboptimal multi-rate receiver; suboptimal multirate receiver; synchronous CDMA; Bit rate; Detectors; Fading; Frequency; Matched filters; Multiaccess communication; Multipath channels; Multiple access interference; Rayleigh channels; Signal processing;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4872-9
DOI :
10.1109/PIMRC.1998.731403
