On the Beamforming Design for Efficient Interference Alignment
Information Theory
2009-06-23 v1 math.IT
Abstract
An efficient interference alignment (IA) scheme is developed for -user single-input single-output frequency selective fading interference channels. The main idea is to steer the transmit beamforming matrices such that at each receiver the subspace dimensions occupied by interference-free desired streams are asymptotically the same as those occupied by all interferences. Our proposed scheme achieves a higher multiplexing gain at any given number of channel realizations in comparison with the original IA scheme, which is known to achieve the optimal multiplexing gain asymptotically.
Cite
@article{arxiv.0906.3737,
title = {On the Beamforming Design for Efficient Interference Alignment},
author = {Sang Won Choi and Syed A. Jafar and Sae-Young Chung},
journal= {arXiv preprint arXiv:0906.3737},
year = {2009}
}
Comments
3 pages, 1 figure, submitted to IEEE Comm. Letters, Mar. 2009