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학술지 Improved Lattice Reduction-Aided MIMO Successive Interference Cancellation Under Imperfect Channel Estimation
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저자
박재현, 전주환
발행일
201206
출처
IEEE Transactions on Signal Processing, v.60 no.6, pp.3346-3351
ISSN
1053-587X
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TSP.2012.2189107
협약과제
12PR2100, UHF TV White Space 이용 CR 통신기술 개발, 정병장
초록
Lattice reduction (LR) and successive interference cancellation (SIC) are two well-known techniques that can be used to improve detection performance over linear detectors for multiple-input multiple-output (MIMO) systems. However, the LR technique and the SIC technique usually need perfect knowledge on the channel at the receiver, and the use of these techniques with an erroneous channel matrix even worsens the detection performance compared to linear detectors. In this correspondence, we shall show how to modify these techniques to make them robust under imperfect channel estimation. Information needed for the proposed algorithm is moderate; the variance of channel estimation error is the only requirement. Furthermore, our algorithm is not sensitive to the error in the variance of channel estimation error. © 2012 IEEE.
키워드
Channel estimation error, Lattice reduction, LLL algorithm, SIC
KSP 제안 키워드
Channel estimation(CE), Erroneous Channel, Imperfect channel estimation, LLL Algorithm, Linear detectors, Successive Interference Cancellation, channel estimation errors(CSEs), channel matrix, detection performance, lattice reduction(LR), multiple-input-multiple-output (MIMO) systems