Title: Relay selection in the multiple-mobile-relay-based D2D system over N-Nakagami fading channels

Authors: Lingwei Xu; Hao Zhang; Tingting Lu; Xing Liu

Addresses: College of Information Science and Technology, Qingdao University of Science and Technology, 99 Songling Road, Qingdao 266061, China ' College of Information Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao 266100, China ' College of Information Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao 266100, China ' College of Information Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao 266100, China

Abstract: Based on variable-gain amplify-and-forward relaying scheme, the lower bound on the outage probability of the multiple-mobile-relay-based device-to-device system with relay selection over N-Nakagami fading channels is investigated in this paper. By the method of harmonic mean of positive random variables, the closed-form expressions for the lower bound on outage probability are derived. Then the outage probability performance under different conditions is evaluated through numerical simulations to verify the analysis. The simulation results showed that the number of mobile relays, the fading coefficient, the number of cascaded components, the relative geometrical gain, and the power-allocation parameter have an important influence on the outage probability performance.

Keywords: D2D communication; N-Nakagami fading channels; amplify-and-forward relaying; outage probability.

DOI: 10.1504/IJCSE.2017.084155

International Journal of Computational Science and Engineering, 2017 Vol.14 No.3, pp.234 - 241

Received: 03 Dec 2014
Accepted: 06 Jul 2015
Published online: 16 May 2017 *

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