Performance Analysis of Opportunistic Relaying in a Poisson Field of Amplify-and-Forward Relays

The performance of opportunistic relaying in a dual-hop amplify-and-forward relay network where the relaying nodes are distributed according to a homogeneous two-dimensional Poisson point process with fixed density is analyzed. Largely ignored in the literature, this assumption leads to more realist...

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Bibliographic Details
Published in:IEEE transactions on communications 2013-01, Vol.61 (1), p.97-107
Main Authors: Behnad, A., Rabiei, A. M., Beaulieu, N. C.
Format: Article
Language:English
Subjects:
Access methods and protocols, osi model
Applied sciences
Cooperative diversity
Diversity reception
dual-hop relaying
Exact sciences and technology
fading channels
opportunistic relaying
outage probability
Poisson point process
Protocols
Random variables
Rayleigh channels
Relays
selection combining
Signal to noise ratio
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Transmission and modulation (techniques and equipments)
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Summary:The performance of opportunistic relaying in a dual-hop amplify-and-forward relay network where the relaying nodes are distributed according to a homogeneous two-dimensional Poisson point process with fixed density is analyzed. Largely ignored in the literature, this assumption leads to more realistic results, as in a typical practical scenario neither the number of relays nor their distances from the source and destination are known. An exact expression for the outage probability of this cooperative system for general fading environments and different types of relaying is derived. The expression is then {simplified under an assumption that the radius of the relay deployment region is sufficiently large}, and specialized to additive white Gaussian noise (no fading), Rayleigh fading and severe (half-Gaussian) fading environments. Simple and tight upper and lower bounds on the outage probability are also derived. Simulation results validate the theoretical analyses and verify the accuracies of the proposed bounds.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2012.12.110411