Asymptotic Performance Analysis of Two-Way Opportunistic Relaying Channels

Abstract:

The work interests in the two-way opportunistic relaying (TWOR) system in which the analog network coding (ANC) employed. For the TWOR-ANC, we first present the traditional max-min best relay selection scheme as well as the corresponding closed-form analytical expressions for the cumulative distribution function (CDF) and the probability density function (PDF) of the end-to-end SNR. Then, to simplify the analysis of system performance, by using the approximation of the modified Bessel function of the second kind, , we obtain the performance bounds of the TWOR-ANC system. The analytical results show that e^-z/z determines the lower bound of system performance, and the exact solution of system performance is very close to the lower bound in low SNRs. At the same time, 1/z does the upper bound, and the exact solution is very close to the upper bound in high SNRs. Thus, in high SNRs or lower SNRs, the system performance can be measured approximately by the upper bound or lower bound.

• Periodical: Applied Mechanics and Materials (Volumes 347-350)
• Pages: 1419-1424
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.347-350.1419
• Online since: August 2013
• Authors: Yu Hua Ouyang, Xiang Dong Jia
• Keywords: Cooperative Communication, Network Coding, Opportunistic Relaying

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