Performance Analysis of Amplify and Forward Cooperative Networks over Rayleigh and Nakagami-m Channels based Relaying Selection
Journal: INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY (Vol.15, No. 5)Publication Date: 2016-04-11
Authors : Ali Abdulwahhab Mohammed; Li Yu; Li Yu; Manar Al-Kali; Manar Al-Kali; Desheng Wang; Desheng Wang;
Page : 6749-6756
Keywords : Cooperative networks; amplify-and-forward; Symbol error rate; outage probability; Nakagami-m fading channels; Rayleigh fading channels;
Abstract
In this paper investigates the performance, analysis of amplify and forward (AF) cooperative networks with the relay selection over ?Nakagami-m and Rayleigh fading channels and ?M-ary phase shift keying (MPSK) modulations. New closed form expressions are derived for the general cases of Rayleigh and Nakagami-m fading channels. cumulative density function (CDF), probability density function (PDF) of the end ?to - end signal ?to ? nois ratio (SNR) of a dual-hop opportunistic AF relaying system, moment generating function (MGF), symbol error rate (SER) and outage probability (Pout). and the first? closed-form study for opportunistic AF relaying system where the best node is selected from a number of candidate intermediate nodes to relay the data signal between the source and the destination. Simulation results reveal that the PDF , CDF, Pout and SER performance downgrades either the m parameter or the number of relays increases. Our simulations compared between Rayleigh and Nakagami-m links for a different number of relays. In addition, different modulation techniques are examined to show the effect of the modulation scheme which was used over Rayleigh and Nakagami-m fading channels on the cooperative networks. The obtained results proved the impact of m parameters, relay selection and modulation index on the pout and SER performance.
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Last modified: 2016-06-29 15:18:41