Performance Evaluation of Two-Hop Wireless Link under Rayleigh and Nakagami-m Fading

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Author(s) Himadri S. Saha | Md. Imdadul Islam | M.R. Amin
Pages 22-27
Volume 2
Issue 1
Date January, 2012
Keywords Probability of symbol error, maximal ratio combining (MRC), Alamouti scheme, coherent demodulator, Nakagami-m fading channel.
Abstract

One of the major challenges in wireless communications, especially in urban areas, is to detect the digital information under different fading environments. In a two-hop wireless link, each hop is affected by fading and noise which degrades the overall performance of the communication system. In this paper, performance of a two-hop link is analyzed under Rayleigh and Nakagami-m fading environments taking maximal ratio combining (MRC) at the first hop and Alamuoti coding at the second hop. The objective of the paper is to observe the impact of fading effect on the bit error rate (BER) on the performance of the two-hop wireless link for 8-PSK and QPSK modulation schemes.

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