Topology-assisted techniques to relay selection for homogeneously distributed wireless sensor networks

Farrokh Etezadi, Keyvan Zarifi, Ali Ghrayeb, Sofiene Affes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We consider a multi-relay amplify-and-forward cooperative communication scheme in wireless sensor networks with uniformly distributed nodes. Fixing the average total transmission power from the network and preserving fairness among the selected relays by constraining them to transmit with equal average powers, we aim to improve the signal reception quality at the far-field receiver by means of a proper choice of the relays. Assuming that the nodes' forward channels are not known, the following three relay selection schemes are proposed and their performances are analyzed. 1) Optimal relay selection scheme that maximizes the average SNR at the receiver by exploiting K nodes with the highest SNRs as relays; 2) geometry-based relay selection scheme that is energy-efficient and achieves a close-to-optimal average SNR performance at the receiver by using K closest nodes to the source as relays; and 3) random relay selection scheme that is energy-efficient and further guarantees a fair usage of all nodes by randomly selecting K relays from a specific area around the source. By minimizing an outage probability, a strategy to determine this area is also proposed. Finally, it is shown for all relay selection schemes that the SNR variance at the receiver converges to zero as K increases.

Original languageEnglish
Title of host publication2010 IEEE Global Telecommunications Conference, GLOBECOM 2010
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event53rd IEEE Global Communications Conference, GLOBECOM 2010 - Miami, FL, United States
Duration: 6 Dec 201010 Dec 2010

Other

Other53rd IEEE Global Communications Conference, GLOBECOM 2010
CountryUnited States
CityMiami, FL
Period6/12/1010/12/10

Fingerprint

Reception quality
Cooperative communication
Power transmission
Outages
Wireless sensor networks
Topology
Geometry

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Etezadi, F., Zarifi, K., Ghrayeb, A., & Affes, S. (2010). Topology-assisted techniques to relay selection for homogeneously distributed wireless sensor networks. In 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010 [5683926] https://doi.org/10.1109/GLOCOM.2010.5683926

Topology-assisted techniques to relay selection for homogeneously distributed wireless sensor networks. / Etezadi, Farrokh; Zarifi, Keyvan; Ghrayeb, Ali; Affes, Sofiene.

2010 IEEE Global Telecommunications Conference, GLOBECOM 2010. 2010. 5683926.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Etezadi, F, Zarifi, K, Ghrayeb, A & Affes, S 2010, Topology-assisted techniques to relay selection for homogeneously distributed wireless sensor networks. in 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010., 5683926, 53rd IEEE Global Communications Conference, GLOBECOM 2010, Miami, FL, United States, 6/12/10. https://doi.org/10.1109/GLOCOM.2010.5683926
Etezadi F, Zarifi K, Ghrayeb A, Affes S. Topology-assisted techniques to relay selection for homogeneously distributed wireless sensor networks. In 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010. 2010. 5683926 https://doi.org/10.1109/GLOCOM.2010.5683926
Etezadi, Farrokh ; Zarifi, Keyvan ; Ghrayeb, Ali ; Affes, Sofiene. / Topology-assisted techniques to relay selection for homogeneously distributed wireless sensor networks. 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010. 2010.
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