Paper Info
Title
Beam Tracking for Interference Alignment in Time-Varying MIMO Interference Channels: A Conjugate-Gradient-Based Approach
Abstract
In this paper, an adaptive beam tracking algorithm for interference alignment (IA) in time-varying multiple-input-multiple-output (MIMO) interference channels is presented. It is shown that obtaining a set of interference-aligning transmit beamforming matrices is equivalent to minimizing a certain Rayleigh quotient, and an approach based on the conjugate gradient (CG) method combined with metric projection is applied to this minimization problem to construct an adaptive algorithm for interference-aligning beam design. The convergence of the proposed algorithm in static channels is established, and the steady-state behavior of the proposed algorithm in time-varying channels is investigated by numerical simulations. The performance of the proposed algorithm is evaluated numerically, and numerical results show that the proposed algorithm performs well with low computational complexity.
Year
DOI
Venue
2014
10.1109/TVT.2013.2279270
IEEE Transactions on Vehicular Technology
Keywords
DocType
Volume
Vectors,Algorithm design and analysis,Eigenvalues and eigenfunctions,Interference channels,Receivers,MIMO
Journal
63
Issue
ISSN
Citations 
2
0018-9545
8
PageRank 
References 
Authors
0.47
8
3
Name
Order
Citations
PageRank
Junse Lee1212.87
Heejung Yu215422.19
Youngchul Sung362145.85