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학술대회 Adaptive Beam Tracking for Interference Alignment in Time-varying MIMO Interference Channels: Conjugate Gradient Approach
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저자
이준세, 유희정, 성영철, 이용훈
발행일
201105
출처
International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2011, pp.3364-3367
DOI
https://dx.doi.org/10.1109/ICASSP.2011.5947106
협약과제
10MI3500, IEEE 802.11 VHT 초고속 무선랜 무선전송 연구, 이석규
초록
Based on a linear formulation to interference alignment, an adaptive algorithm for interference-aligning beam tracking in time-varying MIMO interference channels is proposed. It is shown that obtaining the interference-aligning beam vector is equivalent to minimizing a certain Rayleigh quotient, and the conjugate gradient approach is adopted to construct an adaptive algorithm. The convergence and stability of the proposed algorithm are established in static channel case, and numerical results show that the proposed algorithm performs well compared with other existing methods with much less complexity. © 2011 IEEE.
키워드
adaptive algorithm, conjugate gradient, Interference alignment, least squares
KSP 제안 키워드
Conjugate Gradient(CG), Gradient approach, Interference Alignment(IA), Least Squares(LS), MIMO interference channels, Numerical results, Rayleigh quotient, an adaptive algorithm, beam tracking, time-varying