Conference Paper

# Symbol error rate analysis of relay-based wireless systems.

DOI: 10.1109/PIMRC.2011.6139839 Conference: IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2011, Toronto, ON, Canada, September 11-14, 2011
Source: DBLP

ABSTRACT In this paper, the symbol error rate (SER) performance of a relay-based amplify-and-forward (AF) system is analyzed over fading channels . The relay power-gain is optimized with the objective of maximizing the received signal-to-noise-ratio (SNR) at the destination, given that the fading statistics of the links are known at the relay node. The Gaussian finite mixture is utilized to mathematically formulate, in a simple and unified way, the statistics of the received SNR at optimal relay power-gain. These statistics include the probability density function (pdf) and the moment generating function (MGF). Using this technique, the SER for coherent and differentially coherent modulations are derived. Monte Carlo simulation results are presented to validate the derived expressions.

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• "The branches are assumed to be statistically independent, non-identical and can be represented as weighted sum of Gaussian PDFs. Similar to [12], the approximated SNR-PDF for links RD1 and RD2 can be written as "
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• "A more important goal for developing such approximation is the required level of accuracy in some applications. The finite mixture approximation is a summation of Gaussian PDFs with different weights, means and variances (see [6] "
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