An Empirical Study of OSER Evaluation with SNR for Two-Way Relaying Scheme

The two-way relaying scheme is a network coding scheme which provides efficient utilization of spectrum. The performance of a two-way relaying scheme based on analog network coding (ANC) can be evaluated in context of many parameters such as overall symbol error rate (OSER), overall outage probability (OOP) and ergodic sum rate (ESR). In this paper we analyse the OSER over Nakagami-m fading channels for analog network coding scheme. The variation of OSER with respect to signal to noise ratio (SNR) has been observed for various factors such as fading parameter, modulation scheme used and number of antennas at the source and destination terminal. The threshold range of SNR for a tolerable value of OSER of 0.001 is computed as 20 to 25 dB. The results demonstrate the necessity of high SNR in two way relaying scheme for tolerable OSER. Further the analysis may be useful for selection of various physical layer parameters in design of communication networks.

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