Paper Info
Title
A Composite Cyclodespreader And Semiblind Beamformer For Wcdma
Abstract
In cellular wideband code-division multiple-access (WCDMA) systems, several transmitted data sequences can be separated because of the unique spreading codes which are designed to be orthogonal. However, cochannel interference and multipath propagation usually destroy this orthogonality at the receiver. We present a composite cyclodespreader that compensates for this distortion by exploiting the cyclostationary property of WCDMA signals, and uses a minimum mean-square-error criterion to compute a composite despreading code. A semiblind beamformer that utilizes estimated physical channels as an extended training sequence is also employed in the receiver to improve the interference rejection capability in a high interference environment.
Year
DOI
Venue
2009
10.1109/CISS.2009.5054725
2009 43RD ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS, VOLS 1 AND 2
Keywords
Field
DocType
base stations,code division multiple access,spread spectrum communication,wideband code division multiple access,distortion,frequency,downlink,wcdma,multipath propagation,correlation,codes
Multipath propagation,Wideband,Computer science,Computer network,Interference (wave propagation),Code division multiple access,Distortion,Cyclostationary process,Spread spectrum,Telecommunications link
Conference
Citations 
PageRank 
References 
0
0.34
4
Authors
2
Name
Order
Citations
PageRank
Sheng-Luen Wei111.06
John J. Shynk21410.72