94
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Outage Probability of Wireless Ad Hoc Networks with Cooperative Relaying

      Preprint
      , ,

      Read this article at

          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          In this paper, we analyze the performance of cooperative transmissions in wireless ad hoc networks with random node locations. According to a contention probability for message transmission, each source node can either transmits its own message signal or acts as a potential relay for others. Hence, each destination node can potentially receive two copies of the message signal, one from the direct link and the other from the relay link. Taking the random node locations and interference into account, we derive closed-form expressions for the outage probability with different combining schemes at the destination nodes. In particular, the outage performance of optimal combining, maximum ratio combining, and selection combining strategies are studied and quantified.

          Related collections

          Most cited references10

          • Record: found
          • Abstract: not found
          • Article: not found

          Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage Behavior

            Bookmark
            • Record: found
            • Abstract: found
            • Article: found
            Is Open Access

            A Simple Cooperative Diversity Method Based on Network Path Selection

            Cooperative diversity has been recently proposed as a way to form virtual antenna arrays that provide dramatic gains in slow fading wireless environments. However most of the proposed solutions require distributed space-time coding algorithms, the careful design of which is left for future investigation if there is more than one cooperative relay. We propose a novel scheme, that alleviates these problems and provides diversity gains on the order of the number of relays in the network. Our scheme first selects the best relay from a set of M available relays and then uses this best relay for cooperation between the source and the destination. We develop and analyze a distributed method to select the best relay that requires no topology information and is based on local measurements of the instantaneous channel conditions. This method also requires no explicit communication among the relays. The success (or failure) to select the best available path depends on the statistics of the wireless channel, and a methodology to evaluate performance for any kind of wireless channel statistics, is provided. Information theoretic analysis of outage probability shows that our scheme achieves the same diversity-multiplexing tradeoff as achieved by more complex protocols, where coordination and distributed space-time coding for M nodes is required, such as those proposed in [7]. The simplicity of the technique, allows for immediate implementation in existing radio hardware and its adoption could provide for improved flexibility, reliability and efficiency in future 4G wireless systems.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              An Aloha protocol for multihop mobile wireless networks

                Bookmark

                Author and article information

                Journal
                2013-01-23
                Article
                10.1109/GLOCOM.2012.6503812
                1301.5687
                38b693fc-974e-4e1c-b98c-2444bc06780c

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                History
                Custom metadata
                7 pages; IEEE Globecom 2012
                cs.IT math.IT

                Numerical methods,Information systems & theory
                Numerical methods, Information systems & theory

                Comments

                Comment on this article