상세정보
학술대회
LS Codes Assisted Multipath Channel Interference Canceller for MIMO-OFDM Systems
- 발행일
- 200704
- 출처
- Vehicular Technology Conference (VTC) 2007 (Spring), pp.1465-1469
- 협약과제
- 07MM1700, 차세대 이동통신용 무선 공간채널 특성 연구, 정현규
- 초록
- MIMO-OFDM system is a promising way to achieve high data-rate wireless transmission. In this paper, Loosely Synchronous (LS) codes assisted Multipath Channel Inteiference Canceller (MCIC) is proposed for the channel estimation of MIMO-OFDM systems. Since LS codes have perfect autocorrelation and cross-correlation functions within certain vicinity of the zero shifts, LS codes assisted MCIC can substantially reduce multipath channel interference. Simulation results show that the MCIC estimator outperforms least square estimator and has slightly inferior performance as compared with linear minimum mean square error (LMMSE) estimator. Moreover the MCIC estimator has the advantage of not requiring any information about the channel statistics like auto-correlation of channels. © 2007 IEEE.
- KSP 제안 키워드
- Auto-Correlation, Channel Interference, Channel estimation(CE), Cross-Correlation, High data rate, Interference canceller, Least Squares(LS), Least square estimator, Linear minimum mean square error, MIMO-OFDM systems, Minimum Mean Square Error(MMSE)