Diversity Performance of Physical Layer Network Coding based on Reed-Solomon Codes

Konferenz: European Wireless 2014 - 20th European Wireless Conference
14.05.2014 - 16.05.2014 in Barcelona, Spain

Tagungsband: European Wireless 2014

Seiten: 5Sprache: EnglischTyp: PDF

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Fang, Dong; Burr, Alister (Department of Electronics, University of York, York, UK)

We propose a novel scheme for physical-layer network coding (PNC), constructed from linear block codes for multiple-user multiple-relay wireless networks. In the proposed design, each relay computes a linear combination of source symbols, namely, the network coded symbol (NCS) and forwards it to the destination. The destination collects all NCSs and the original source symbols to form a valid codeword of the linear code. The resulting codeword can be decoded to reliably extract the original source symbols. The numerical results show that our proposed design provides m-th order diversity when there are m relays. Moreover, the proposed design provides a significant sumrate enhancement over the orthogonal multiple access scheme with network coding described in previous literature.