Energy efficient DF relay placement in alpha-mu fading channel with cooperative and non-cooperative schemes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F16%3APU120983" target="_blank" >RIV/00216305:26220/16:PU120983 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.radioeng.cz/papers/2016-4.htm" target="_blank" >https://www.radioeng.cz/papers/2016-4.htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13164/re.2016.0749" target="_blank" >10.13164/re.2016.0749</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Energy efficient DF relay placement in alpha-mu fading channel with cooperative and non-cooperative schemes

Popis výsledku v původním jazyce

In this paper we examine the energy efficiency of relay aided wireless sensor network (WSN) links where the two-hop transmission between source and destination is realized with an adaptive decode and forward (DF) relay. The receiver may use only the relayed signal (non-cooperative mode) or it may be combined with the signal directly available from the source (co-operative mode). In the second mode, we have considered two combining schemes, selection combining (SC) and maximum ratio combining (MRC). A generalized alpha-mu model is used to characterize fading and spectrally efficient M-ary quadrature amplitude modulation (MQAM) is chosen as the modulation technique. The alpha-mu model is quite general in nature and it encompasses other popular fading models such as Rayleigh and Nakagami-m. The result of our analysis reveals that combining does not necessarily help in reducing energy requirement and the decision of whether ‘to use’ or ‘not to use’ combining depends on the source to destination distance. Further, a comparison between MRC and SC from the energy efficiency perspective manifests that using MRC does not automatically guarantee maximum energy savings and the SC strategy is more robust against parameter variations as well as incurs lower receiver complexity. We also investigate the optimal relay location, which minimizes energy requirement, for all the above mentioned relaying strategies, and study how different system parameters affect the optimal relay placement

Název v anglickém jazyce

Energy efficient DF relay placement in alpha-mu fading channel with cooperative and non-cooperative schemes

Popis výsledku anglicky

In this paper we examine the energy efficiency of relay aided wireless sensor network (WSN) links where the two-hop transmission between source and destination is realized with an adaptive decode and forward (DF) relay. The receiver may use only the relayed signal (non-cooperative mode) or it may be combined with the signal directly available from the source (co-operative mode). In the second mode, we have considered two combining schemes, selection combining (SC) and maximum ratio combining (MRC). A generalized alpha-mu model is used to characterize fading and spectrally efficient M-ary quadrature amplitude modulation (MQAM) is chosen as the modulation technique. The alpha-mu model is quite general in nature and it encompasses other popular fading models such as Rayleigh and Nakagami-m. The result of our analysis reveals that combining does not necessarily help in reducing energy requirement and the decision of whether ‘to use’ or ‘not to use’ combining depends on the source to destination distance. Further, a comparison between MRC and SC from the energy efficiency perspective manifests that using MRC does not automatically guarantee maximum energy savings and the SC strategy is more robust against parameter variations as well as incurs lower receiver complexity. We also investigate the optimal relay location, which minimizes energy requirement, for all the above mentioned relaying strategies, and study how different system parameters affect the optimal relay placement

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Radioengineering

ISSN

1210-2512

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

12-19

Kód UT WoS článku

000390180800017

EID výsledku v databázi Scopus

2-s2.0-85008194352