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IMT-2000 위성통신 시스템에서 폐쇄루프 전송 다이버시티 기법의 성능 분석
오관명,김학성,김산해,이경규,이원철,신요안 崇實大學校 2000 論文集 Vol.30 No.1
In this paper, we apply a close loop transmit diversity scheme to IMT-2000 satellite systems, and investigate the performance of the scheme in both ideal and more realistic situations. We verify that the performance of the closed loop transmit diversity scheme is quite sensitive to errors in feedback information. However, we also show that the number of quantization bits for feedback information does not significantly affect the system performance when considering the feedback of phase information only. In addition, 2-bit quantized system achieves the better performance than 4-bit quantized system in terms of slot error rate.