Computer Science – Information Theory
Scientific paper
2009-06-21
Computer Science
Information Theory
3 pages, 1 figure, submitted to IEEE Comm. Letters, Mar. 2009
Scientific paper
An efficient interference alignment (IA) scheme is developed for $K$-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.
Choi Sang Won
Chung Sae-Young
Jafar Syed A.
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