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LS Codes Assisted Multipath Channel Interference Canceller for MIMO-OFDM Systems
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- Authors
- Won Sop Kim, Jae Joon Park, Hyun Kyu Chung, Jong Sub Cha, Hyuck Jae Lee
- Issue Date
- 2007-04
- Citation
- Vehicular Technology Conference (VTC) 2007 (Spring), pp.1465-1469
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- 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 Keywords
- 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)