Degrees of freedom of relay aided MIMO X network with orthogonal components

Dileep Gaurav, Dinesh and Hari, KVS (2011) Degrees of freedom of relay aided MIMO X network with orthogonal components. In: 2011 14th International Symposium on Wireless Personal Multimedia Communications (WPMC), 3-7 Oct. 2011, Brest, France.

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Abstract

We consider the one-way relay aided MIMO X fading Channel where there are two transmitters and two receivers along with a relay with M antennas at every node. Every transmitter wants to transmit messages to every other receiver. The relay broadcasts to the receivers along a noisy link which is independent of the transmitters channel. In literature, this is referred to as a relay with orthogonal components. We derive an upper bound on the degrees of freedom of such a network. Next we show that the upper bound is tight by proposing an achievability scheme based on signal space alignment for the same for M = 2 antennas at every node.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright 2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	26 Dec 2011 09:02
Last Modified:	26 Dec 2011 09:02
URI:	http://eprints.iisc.ac.in/id/eprint/42833

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