Feedback overhead-aware fast distributed selection scheme for multi-node wireless systems

Talak, Rajat and Mehta, Neelesh B (2011) Feedback overhead-aware fast distributed selection scheme for multi-node wireless systems. In: 2011 IEEE Global Telecommunications Conference (GLOBECOM 2011), 5-9 Dec. 2011, Houston, TX, USA.

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Abstract

Opportunistic selection is a practically appealing technique that is used in multi-node wireless systems to maximize throughput, implement proportional fairness, etc. However, selection is challenging since the information about a node's channel gains is often available only locally at each node and not centrally. We propose a novel multiple access-based distributed selection scheme that generalizes the best features of the timer scheme, which requires minimal feedback but does not always guarantee successful selection, and the fast splitting scheme, which requires more feedback but guarantees successful selection. The proposed scheme's design explicitly accounts for feedback time overheads unlike the conventional splitting scheme and guarantees selection of the user with the highest metric unlike the timer scheme. We analyze and minimize the average time including feedback required by the scheme to select. With feedback overheads, the proposed scheme is scalable and considerably faster than several schemes proposed in the literature. Furthermore, the gains increase as the feedback overhead increases.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE.USA
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	20 Mar 2013 10:34
Last Modified:	20 Mar 2013 10:34
URI:	http://eprints.iisc.ac.in/id/eprint/46098

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