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DF Relaying Networks With Randomly Distributed Interferers
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DOI：10.1109/ACCESS.2017.2751105.png)
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Abstract
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In this paper, we study a decode-and-forward (DF) relaying network with random interferers, in which the source transmits its message to the destination with the help of N DF relays. We consider the interference-limited environments, where the reception at the relays and the destination are corrupted by random interferers, which are distributed according to a homogeneous Poisson point process. To improve the system performance, relay selection based on received signal-to-interference ratio (SIR) has been employed to select the best relay among N ones. We examine the network performance by deriving the analytical outage probability under Rayleigh fading transmission channels and Nakagami-m fading interference channels. Moreover, we compute the asymptotic expressions of outage probability, and confirm that the system diversity order on SIR is equal to 2/alpha, where alpha denotes the path loss factor. Furthermore, we see that the major limitation of system results from the second hop. Numerical and simulation results are demonstrated to validate the proposed analysis as well.
Keywords:
DF relaying networks
random interferers
Poisson point process
outage probability
diversity order
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