NDLI: On the transmit strategy for the interference MIMO relay channel in the low power regime

Content Provider	IEEE Xplore Digital Library
Author	Chaaban, A. Sezgin, A.
Copyright Year	2010
Description	Author affiliation: Emmy-Noether Research Group on Wireless Networks, Institute of Telecommunications and Applied Information Theory, UIm University, 89081, Germany (Chaaban, A.; Sezgin, A.)
Abstract	This paper studies the interference channel with two transmitters and two receivers in the presence of a MIMO relay in the low transmit power regime. A communication scheme combining block Markov encoding, beamforming, and Willems' backward decoding is used. With this scheme, we get an interference channel with channel gains dependent on the signal power. A power allocation for this scheme is proposed, and the achievable rate region with this power allocation is given. We show that, at low transmit powers, with equal power constraints at the relay and the transmitters, the interference channel with a MIMO relay achieves a sum rate that is linear in the power. This sum rate is determined by the channel setup. We also show that in the presence of abundant power at the relay, the transmit strategy is significantly simplified, and the MAC from the transmitters to the relay forms the bottle neck of the system from the sum rate point of view.
Starting Page	1
Ending Page	6
File Size	3508275
Page Count	6
File Format	PDF
ISBN	9781424468720
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-01-18
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	VDE
Subject Keyword	Transmitters Array signal processing Wireless networks Power system relaying MIMO Interference channels Decoding Relays Interference constraints Information theory
Content Type	Text
Resource Type	Article

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