On the design of network coding for multiple two-way relaying channels

Zhiguo Ding, Tong Wang, Mugen Peng, Wenbo Wang, Kin K. Leung

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

In this paper, we study the design of network coding for the multiple two-way relaying channels where multiple pairs of sources wish to exchange information with their partners. All nodes are equipped with multiple antennas, and we focus on a particular scenario where the sources have less antennas than the relay. For such a case, the application of existing protocols developed for the scenario with a single pair has to rely on the time sharing approach, which will result in some loss of reliability and throughput. In this paper, we develop a new network coding transmission protocol which can be viewed as a combination of traditional beamforming and the recently developed approaches of signal alignment. By using such a protocol, all M pairs of source nodes can accomplish information exchanging within two time slots. We have developed analytical results, such as outage probability and diversity-multiplexing tradeoff, which demonstrate that the proposed transmission protocol can achieve a larger multiplexing gain than the time sharing approach. Furthermore, the proposed network coding scheme is extended to the special case where source nodes only have a single antenna. Simulation results have been provided to demonstrate the performance of the proposed network coding schemes.

Original languageBritish English
Article number5754748
Pages (from-to)1820-1832
Number of pages13
JournalIEEE Transactions on Wireless Communications
Volume10
Issue number6
DOIs
StatePublished - Jun 2011

Keywords

  • Network coding
  • outage probability
  • precoding design
  • two-way relaying

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