Outage Probability of Regenerative Protocols for Two-Source Two-Destination Networks

Authors:
Quoc-Tuan Vien;Brian G. Stewart;Huan X. Nguyen
Affiliations:
School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow, UK G4 0BA;School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow, UK G4 0BA;School of Engineering and Information Sciences, Middlesex University, The Burroughs, London, UK NW4 4BT
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

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Abstract

In this paper, the analytical expressions for the outage probability of different decode-and-forward (DF) relaying strategies for two-source two-destination networks are evaluated allowing an investigation of their effectiveness in energy saving to be determined. Each source node transmits data to an interested destination node with the help of the remaining source node in a cooperative DF manner. Specifically, we consider four DF protocols, including repetition DF (RDF), parallel DF (PDF), network coding-based RDF (NC-RDF), and dirty paper coding-like network coding-based PDF (DPC-NC-PDF). The closed-form expression of the outage probability for each protocol is derived at high signal-to-noise ratio. The results show that the DPC-NC-PDF protocol achieves the best performance while the NC-RDF protocol is better than both the RDF and PDF protocols with proper linear NC coefficients. All the DF protocols are shown to achieve diversity order one and the highest multiplexing gain is achieved with the NC-RDF and DPC-NC-PDF protocols. Finally, simulation results are presented to verify the analytical findings and show the system throughput comparison of various DF protocols.