Title :
Adaptive selection combining for soft handover in OVSF W-CDMA systems
Author :
Lin, Kuo-Jen ; Tseng, Yu-Chee
Author_Institution :
Dept. of Electr. Eng., Chung Hua Univ., Hsin-Chu, Taiwan
Abstract :
In W-CDMA, soft handover is supported at cell boundaries to maintain communication quality. The maximal ratio combining (MRC) and generalized selection combining (GSC) , are two possible approaches. However, soft handover is resource-intensive. In this letter, we propose an adaptive selection combining (ASC) scheme that can switch flexibly between MRC and GSC so as to take care of both channel loading and communication quality. The signal-to-interference-and-noise ratio (SINR) is kept as high as that of MRC while the blocking probability can remain at about the same level as that of GSC.
Keywords :
broadband networks; cellular radio; code division multiple access; diversity reception; probability; W-CDMA systems; adaptive selection combining; blocking probability; channel loading; communication quality; generalized selection combining; maximal ratio combining; orthogonal variable spreading factor; signal-to-interference-and-noise ratio; soft handover; Base stations; Bit error rate; Communication system software; Diversity reception; Educational institutions; Embedded software; Handheld computers; Multiaccess communication; Signal to noise ratio; Switches; 65; Active set; OVSF; W-CDMA; orthogonal variable spreading factor; selection combining; soft handover;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2004.837626
