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Performance Analysis of Downlink Beamforming in FDD DS-CDMA Systems
Sangchoon KIM Younggoo KWON Bongsoon KANG
IEICE TRANSACTIONS on Communications
Publication Date: 2007/04/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
direct sequence code division multiple access (DS-CDMA), beamforming techniques, downlink beamforming, frequency division duplex (FDD),
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In this letter, the effects of transmit beamforming on downlink performance in DS-CDMA communication systems are examined. We present a simple-to-use expression for the conditional instantaneous SINR after Rake combining. Assuming BPSK modulation, the performance of average bit error rate is evaluated. We compare the average BER performance obtained by different beamforming methods under frequency selective multipath fading channels.