Space-time pre-RAKE multiuser transmitter precoding for DS-CDMA systems

Author

Guncavdi, Secin ; Duel-Hallen, Alexandra

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA

Volume

4

fYear

2003

fDate

6-9 Oct. 2003

Firstpage

2411

Abstract

A novel linear precoding method that combines multiuser interference (MAI) cancellation, pre-RAKE filtering and transmitter (Tx) antenna diversity is proposed for the downlink of the code division multiple access (CDMA) channel. It is demonstrated that this method has better performance than single user space-time pre-RAKE precoding with relatively low increase in complexity. In addition, several novel and previously proposed MAI cancellation methods for the uplink and downlink are compared. Long range prediction is employed to enable performance of Tx precoding for rapidly time varying fading CDMA channels.

Keywords

Rayleigh channels; antenna arrays; code division multiple access; diversity reception; interference suppression; mobile radio; multipath channels; multiuser detection; radio receivers; space-time codes; spread spectrum communication; time-varying channels; transmitting antennas; DS-CDMA; MAI cancellation; direct-sequence code division multiple access; linear precoding method; multiuser interference; pre-RAKE filtering; space-time pre-RAKE precoding; time varying fading channel; transmitter antenna diversity; Computational complexity; Degradation; Diversity reception; Downlink; Fading; Filtering; Multiaccess communication; Multiple access interference; Multiuser detection; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th

ISSN

1090-3038

Print_ISBN

0-7803-7954-3

Type

conf

DOI

10.1109/VETECF.2003.1285962

Filename

1285962