標題: Linear Interference Suppression With Covariance Mismatches in MIMO-OFDM Systems
作者: Cheng, Chien-Chun
Sezginer, Serdar
Sari, Hikmet
Su, Yu T.
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Multi-user interference;MIMO-OFDM;imperfect CSI
公開日期: 1-十二月-2014
摘要: Interference cancellation is a key design concern for next-generation communication systems. One practical approach is the interference rejection combining (IRC) scheme, which is already being considered as the base receiver for next-generation 3GPP specifications. IRC treats interference as a stationary Gaussian process to facilitate simple interference suppression. However, this stationary assumption does not hold in practice; for example, the variances of the pilot signal and of the data signal from the interfering base station (eNB) are quite different. This considerably impacts the possible improvements of an interference-aware receiver. In this paper, novel interference suppression schemes are proposed, which handle separately the interfering pilot and the interfering data signals. The proposed schemes take into account channel estimation errors and the errors in estimating the covariance of interference plus noise. The performance of the proposed schemes is validated by using realistic channel models and asynchronous scenarios for MIMO-OFDM systems.
URI: http://dx.doi.org/10.1109/TWC.2014.2363097
http://hdl.handle.net/11536/124095
ISSN: 1536-1276
DOI: 10.1109/TWC.2014.2363097
期刊: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume: 13
Issue: 12
起始頁: 7086
結束頁: 7097
顯示於類別:期刊論文


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  1. 000346629900044.pdf