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Arabian Journal for Science and Engineering

, Volume 44, Issue 3, pp 2243–2251 | Cite as

Round Robin, Centralized and Distributed Relay Selection for Cooperative Systems Using Blind and Non-Blind Relays

  • Nadhir Ben HalimaEmail author
  • Hatem Boujemâa
Research Article - Electrical Engineering
  • 17 Downloads

Abstract

In this paper, we evaluate the theoretical bit error probability (BEP) of round robin, centralized and distributed relay selection for cooperative systems. Centralized relay selection activates the relay with the largest end-to-end signal-to-noise ratio (SNR) using a central node that will collect and compare these SNRs. In distributed relay selection, each relay compares its SNR to a predefined threshold T and is activated only when its SNR is larger than T. The threshold T is numerically optimized to have the lowest BEP. The network contains three nodes: one node acting as a source and the other two as destination. One of the destinations is selected to relay the signal to other destination node. Round robin relay selection consists to alternatively assign a node as relay. We also study relay selection for cognitive radio networks. The relay node should generate interference to primary receiver lower than a predefined threshold \(\beta \).

Keywords

Round robin Best relay selection Threshold-based relay selection Cooperative systems Blind and non-blind relays 

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Notes

Funding

Funding was provided by Taibah University.

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Copyright information

© King Fahd University of Petroleum & Minerals 2018

Authors and Affiliations

  1. 1.College of Computer Science and Engineering in YanbuTaibah UniversityMadinahSaudi Arabia
  2. 2.SUPCOM, COSIM LaboratoryTunisTunisia

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