Outage Capacity of Incremental Relaying at Low Signal-to-Noise Ratios

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Title: Outage Capacity of Incremental Relaying at Low Signal-to-Noise Ratios
Authors: Renk, T
Jaekel, H
Jondral, FK
Gunduz, D
Goldsmith, A
Item Type: Conference Paper
Abstract: We present the \epsilon-outage capacity of incremental relaying at low signal-to-noise ratios (SNR) in a wireless cooperative network with slow Rayleigh fading channels. The relay performs decode-and-forward and repetition coding is employed in the network, which is optimal in the low SNR regime. We derive an expression on the optimal relay location that maximizes the \epsilon-outage capacity. It is shown that this location is independent of the outage probability and SNR but only depends on the channel conditions represented by a path-loss factor. We compare our results to the \epsilon-outage capacity of the cut-set bound and demonstrate that the ratio between the \epsilon-outage capacity of incremental relaying and the cut-set bound lies within 1/\sqrt{2} and 1. Furthermore, we derive lower bounds on the \epsilon-outage capacity for the case of K relays.
Issue Date: 1-Dec-2009
URI: http://hdl.handle.net/10044/1/53604
DOI: https://dx.doi.org/10.1109/VETECF.2009.5378918
ISBN: 9781424425150
ISSN: 1550-2252
Journal / Book Title: IEEE Vehicular Technology Conference
Copyright Statement: © 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: cs.IT
Notes: 5 pages, 4 figures, to be presented at VTC Fall 2009 in Anchorage, Alaska
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering

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