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On the Optimal Antenna Weighting Method for Closed-Loop Transmit Antenna Diversity with Average and Peak Power Constraints  

Lee, Ye-Hoon (서울산업대학교, 전자정보공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.7A, 2007 , pp. 694-699 More about this Journal
Abstract
We consider an optimal antenna weighting scheme for a closed-loop transmit antenna diversity system in Rayleigh fading channels. We derive a closed-form expression for the optimal transmitter weights that minimize the average bit error rate (BER) subject to fixed average and peak transmit power constraints. It is shown that the peak power limitation degrades the average BER performance more significantly as the available average power and/or the number of transmit antennas increase.
Keywords
Transmitter Weights; Transmit Antenna Diversity; Peak Transmit Power;
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