Outage Capacity of Incremental Relaying at Low Signal-to-Noise Ratios
File(s)0908.0856v1.pdf (202.38 KB)
Accepted version
Author(s)
Renk, T
Jaekel, H
Jondral, FK
Gunduz, D
Goldsmith, A
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.
Date Issued
2009-12-01
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.
Identifier
http://arxiv.org/abs/0908.0856v1
Subjects
cs.IT
math.IT
Notes
5 pages, 4 figures, to be presented at VTC Fall 2009 in Anchorage, Alaska