한국정보통신학회:학술대회논문집 (Proceedings of the Korean Institute of Information and Commucation Sciences Conference)
- 한국해양정보통신학회 2002년도 춘계종합학술대회
- /
- Pages.509-513
- /
- 2002
A Modified MMSE Algorithm for Adaptive Antennas in OFDM/CDMA Systems
- Su, Pham-Van (Information and Communications University(ICU)) ;
- Tuan, Le-Minh (Information and Communications University(ICU)) ;
- Kim, Jewoo (TeleCIS, Inc.) ;
- Giwan Yoon (Information and Communications University(ICU))
- 발행 : 2002.05.01
초록
This paper presents a semi-blind Minimum Mean Square Error (MMSE) beamforming adaptive algorithm used far OFDM/CDMA combined system. The proposed algorithm exploits the transmitting pilot signal in the initial period of the transmission to update the weight vector. Then it applies the blind adaptive period to update the weight vector, in which the pilot signal is no longer used. The derivation of the algorithm based on the Mean Square Error (MSE) criterion is also presented. Computer simulation is carried out to verify the performance of the proposed approach.