상세정보
학술지
Analytical BER Evaluation of ZF Transmit Beamformer with Channel Estimation Error
- 저자
- 방승재
- 발행일
- 200708
- 출처
- IEICE Transactions on Communications, v.E90-B no.8, pp.2097-2102
- ISSN
- 0916-8516
- 출판사
- 일본, 전자정보통신학회 (IEICE)
- 초록
- The minimum mean square error (MMSE) multiple antenna transmission scheme for a code division multiple access (CDMA) system was recently developed by Choi and Perreau [1]. In this paper, we first show that the zero-forcing (ZF) transmit beamformer for multiple antenna CDMA system has the same form as the MMSE beamformer given by Choi and Perreau. We then develop an analytical method to obtain a closed-form expression of the bit error rate (BER) of the ZF transmit beamformer when there are channel estimation errors. The analytical and simulation results show good agreement, and confirm the importance of accurate channel state information (CSI) at the transmitter when using the ZF transmit beamformer. Copyright © 2007 The Institute of Electronics, Information and Communication Engineers.
- KSP 제안 키워드
- Analytical Method, Bit Error Rate(And BER), CDMA systems, Channel State Information(CSI), Channel estimation(CE), Closed-form expressions, Code division Multiple Access(CDMA), Information and communication, Minimum Mean Square Error(MMSE), Transmission scheme, Transmit beamformer