SER performance analysis for physical layer network coding over AWGN channels

Authors:
Kejie Lu;Shengli Fu;Yi Qian;Hsiao-Hwa Chen
Affiliations:
University of Puerto Rico at Mayagüez, Mayagüez, PR;University of North Texas, Denton, Texas;National Institute of Standards and Technology Gaithersburg, MD;National Cheng Kung University, Taiwan
Venue:
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Year:
2009

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Abstract

While original network coding is proposed over the data link layer, recent work suggests that it can also be implemented on the physical layer. In fact it is more natural for wireless networks because of its omnidirectional transmission. In this paper, we investigate the symbol-error-rate (SER) for binary phase-shift keying (BPSK) and quadrature phase-shift keying (QPSK), but the approaches can be generalized to other constellation schemes. The closed-form SER results are derived for physical layer network coding over AWGN channels. The theoretical analysis is also validated by numerical simulation.