Title :
Low-complexity antenna diversity receivers for WCDMA handsets
Author :
Chan, Peter W C ; Cheng, Roger S. ; Ling, Curtis C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong
Abstract :
A low-complexity antenna diversity architecture using a single receiver chain together with a novel combining algorithm suitable for WCDMA systems is designed to improve handset performance in the mobile downlink. Simulation results are presented comparing different diversity receiver configurations under several channel conditions. System sensitivity to the Doppler frequency and correlation between diversity branches are investigated. Both selection diversity (SD) and a receiver using two front-ends (2FE) are compared with the combining algorithm. The results show that the combining architecture outperforms SD, which is a proposed candidate for WCDMA handset by a gain of about 1.25 dB, while being inferior to 2FE by only 0.75 dB
Keywords :
Doppler effect; broadband networks; code division multiple access; correlation methods; diversity reception; land mobile radio; multipath channels; multiuser channels; radio links; radio receivers; receiving antennas; spread spectrum communication; telephone sets; Doppler frequency; WCDMA handsets; antenna diversity architecture; channel conditions; combining algorithm; combining architecture; direct sequence spread spectrum systems; diversity branches correlation; handset performance; low-complexity antenna diversity receivers; mobile downlink; multipath channel model; selection diversity; simulation results; system sensitivity; two front-ends; Baseband; Circuits; Diversity reception; Mobile antennas; Multiaccess communication; RAKE receivers; Radio frequency; Receiving antennas; Telephone sets; Time division multiple access;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778368
