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Statistical properties of amplify and forward relay links with channel estimation errors

Tabataba, F. S ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1109/AUSCTW.2009.4805598
  3. Publisher: 2009
  4. Abstract:
  5. This paper studies the statistical properties of the signal-to-noise ratio (SNR) of the relay link in a cooperative wireless communication system with fixed gain relay in presence of channel estimation error. The SNR expression is derived and three different analytic approaches with different approximate assumptions are used to obtain the probability distribution function of the SNR and outage probability of the relay link. The first approach is the most accurate one in many cases, however it does not have a closed-form expression. The other two approaches result in closed-form expressions for the outage probability. Therefore, the third approach has been used to find a sub-optimum power allocation scheme for the source and the relay. The numerical results compare the accuracy of the analytic approaches and simulation results for different positions of the relay between the source and the destination. It is shown that the second approach has the most accurate closed-form expression and the third one leads to the simplest closed-form result suitable for power optimization purposes. © 2009 IEEE
  6. Keywords:
  7. Amplify and forward ; Analytic approach ; Channel estimation errors ; Closed form ; Closed-form expression ; Fixed-gain relays ; Numerical results ; Outage probability ; Power allocations ; Power optimization ; Relay links ; Simulation result ; Statistical properties ; Wireless communication system ; Acoustic intensity ; Amplification ; Cellular radio systems ; Cellular telephone systems ; Communication systems ; Distribution functions ; Global system for mobile communications ; Mobile computing ; Outages ; Probability density function ; Probability distributions ; Signal to noise ratio ; Wireless telecommunication systems ; Channel estimation
  8. Source: Proceedings of the 2009 Australian Communications Theory Workshop, AusCTW 2009, 4 February 2009 through 7 February 2009, Sydney, NSW ; 2009 , Pages 44-49 ; 9781424433575 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/4805598