Cooperative protocols for multiple-source multiple-relay wireless networks

J. Zhang, T. M. Lok

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)

Abstract

In this paper, we study the cooperative communications in wireless systems with ns source nodes, nr relay nodes and single destination node. We propose cooperative protocols and analyse the system performance of the cooperation systems. For ns = 1, nr > 1, the nodes cooperate in a repetition way. The impact of the detection error at the relay node on the system performance is analysed, and then a relay selection protocol is proposed to compensate for such effect. For ns > 1, nr > 1, we propose a cooperative coding protocol, in which the relay nodes not only decode and forward the symbols from the source nodes, but also encode the incoming symbols according to the pre-assigned cooperative code. This brings higher efficiency and flexibility compared with the repetition-coded cooperation system with single source node. The analysis and the simulation results demonstrate that the proposed system achieves full diversity order.

Original languageEnglish
Pages (from-to)209-219
Number of pages11
JournalInternational Journal of Sensor Networks
Volume4
Issue number4
DOIs
Publication statusPublished - 1 Dec 2008
Externally publishedYes

Keywords

  • Cooperative communication
  • Cooperative diversity
  • Fading channels
  • Wireless ad hoc Networks

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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