Impact of Outdated Channel Estimates on a Distributed Link-Selection Scheme for AF Relaying Networks

Diana Pamela Moya Osorio; Edgar Eduardo Benitéz Olivo; Daniel Benevides Da Costa; José Cândido Silveira Santos Filho

doi:10.1109/LWC.2015.2393301

Impact of Outdated Channel Estimates on a Distributed Link-Selection Scheme for AF Relaying Networks

Diana Pamela Moya Osorio, Edgar Eduardo Benitéz Olivo, Daniel Benevides Da Costa, José Cândido Silveira Santos Filho

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We investigate the impact of outdated channel estimates on the outage performance of a distributed link-selection scheme recently proposed for variable-gain amplify-and-forward relaying networks. In this scheme, either the direct link or the relaying link is preselected before each transmission, based on a distributed mechanism. We begin by showing that an exact analysis is rather intricate, yielding a multifold integral-form solution. Motivated by this, we then derive a simple closed-form lower bound, which, importantly, proves to be a very tight approximation to the exact outage probability. We also assess the system diversity order via asymptotic analysis.

Original language	English
Article number	7012077
Pages (from-to)	185-188
Number of pages	4
Journal	IEEE Wireless Communications Letters
Volume	4
Issue number	2
DOIs	https://doi.org/10.1109/LWC.2015.2393301
State	Published - 1 Apr 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2012 IEEE.

Keywords

Cooperative diversity
distributed link selection
outage probability
outdated channel state information

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/LWC.2015.2393301

Cite this

@article{55408c03cb584563acc3386a65d3f9fe,

title = "Impact of Outdated Channel Estimates on a Distributed Link-Selection Scheme for AF Relaying Networks",

abstract = "We investigate the impact of outdated channel estimates on the outage performance of a distributed link-selection scheme recently proposed for variable-gain amplify-and-forward relaying networks. In this scheme, either the direct link or the relaying link is preselected before each transmission, based on a distributed mechanism. We begin by showing that an exact analysis is rather intricate, yielding a multifold integral-form solution. Motivated by this, we then derive a simple closed-form lower bound, which, importantly, proves to be a very tight approximation to the exact outage probability. We also assess the system diversity order via asymptotic analysis.",

keywords = "Cooperative diversity, distributed link selection, outage probability, outdated channel state information",

author = "{Moya Osorio}, {Diana Pamela} and {Benit{\'e}z Olivo}, {Edgar Eduardo} and {Da Costa}, {Daniel Benevides} and {Santos Filho}, {Jos{\'e} C{\^a}ndido Silveira}",

note = "Publisher Copyright: {\textcopyright} 2012 IEEE.",

year = "2015",

month = apr,

day = "1",

doi = "10.1109/LWC.2015.2393301",

language = "English",

volume = "4",

pages = "185--188",

journal = "IEEE Wireless Communications Letters",

issn = "2162-2337",

publisher = "IEEE Communications Society",

number = "2",

}

TY - JOUR

T1 - Impact of Outdated Channel Estimates on a Distributed Link-Selection Scheme for AF Relaying Networks

AU - Moya Osorio, Diana Pamela

AU - Benitéz Olivo, Edgar Eduardo

AU - Da Costa, Daniel Benevides

AU - Santos Filho, José Cândido Silveira

PY - 2015/4/1

Y1 - 2015/4/1

N2 - We investigate the impact of outdated channel estimates on the outage performance of a distributed link-selection scheme recently proposed for variable-gain amplify-and-forward relaying networks. In this scheme, either the direct link or the relaying link is preselected before each transmission, based on a distributed mechanism. We begin by showing that an exact analysis is rather intricate, yielding a multifold integral-form solution. Motivated by this, we then derive a simple closed-form lower bound, which, importantly, proves to be a very tight approximation to the exact outage probability. We also assess the system diversity order via asymptotic analysis.

AB - We investigate the impact of outdated channel estimates on the outage performance of a distributed link-selection scheme recently proposed for variable-gain amplify-and-forward relaying networks. In this scheme, either the direct link or the relaying link is preselected before each transmission, based on a distributed mechanism. We begin by showing that an exact analysis is rather intricate, yielding a multifold integral-form solution. Motivated by this, we then derive a simple closed-form lower bound, which, importantly, proves to be a very tight approximation to the exact outage probability. We also assess the system diversity order via asymptotic analysis.

KW - Cooperative diversity

KW - distributed link selection

KW - outage probability

KW - outdated channel state information

UR - http://www.scopus.com/inward/record.url?scp=84927920219&partnerID=8YFLogxK

U2 - 10.1109/LWC.2015.2393301

DO - 10.1109/LWC.2015.2393301

M3 - Article

AN - SCOPUS:84927920219

SN - 2162-2337

VL - 4

SP - 185

EP - 188

JO - IEEE Wireless Communications Letters

JF - IEEE Wireless Communications Letters

IS - 2

M1 - 7012077

ER -

Impact of Outdated Channel Estimates on a Distributed Link-Selection Scheme for AF Relaying Networks

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this