Title :
Combining schemes in rake receiver for low spreading factor long-code W-CDMA systems
Author :
Tantikovit, S. ; Sheikh, A.U.H. ; Wang, M.Z.
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech., Kowloon, China
fDate :
10/26/2000 12:00:00 AM
Abstract :
The authors present a signal model for interpath interference (IPI) in low spreading factor long-code DS/CDMA systems. The impact of IPI can be decomposed into branch correlation and cochannel interference similar to those in a diversity system. Following this interpretation, optimum and suboptimum combining schemes for a rake receiver are developed, which provide significant improvement over the conventional maximum-ratio combining
Keywords :
Rayleigh channels; code division multiple access; mobile radio; radio receivers; radiofrequency interference; CCI; IPI; W-CDMA systems; branch correlation; cochannel interference; interpath interference; long-code W-CDMA systems; low spreading factor; optimum combining schemes; rake receiver; signal model; suboptimum combining schemes; wideband CDMA;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001326
