Cooperative Wireless Multicast: Performance Analysis and Time Allocation

Cooperative wireless multicast is investigated, in which a source sends multicast messages to a number of users. For a multicast message from the source, some users do not successfully receive the message (called unsuccessful users). For a successful user (who successfully receives the message from the source), we define its worst relaying channel gain as the smallest channel gain among its channel gains to all unsuccessful users. It is proposed that the successful user whose worst relaying channel gain is the highest among the worst relaying channel gains of all successful users is selected to serve as a relay. Considering that the channels in the system are independent but nonidentically distributed Rayleigh fading, the authors derive a closed-form outage probability expression for the proposed scheme. It is shown that the proposed scheme can achieve full diversity, and thus, having a larger number of users can improve the outage performance. Furthermore, the authors study the time allocation strategy that determines the durations used by the source and the selected relay for their transmissions, respectively. An approximate optimal time allocation is derived. In addition, the authors also investigate the case with relay selection error and the case with mixed Rayleigh/Rician fading. Simulation results verify the performance of the proposed cooperative multicast scheme and time allocation strategy.

• Record URL:
  https://doi.org/10.1109/TVT.2015.2454439
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00189545
• Supplemental Notes:
  • Copyright © 2016, IEEE.
• Authors:
  • Yang, Long
  • Chen, Jian
  • Zhang, Hailin
  • Jiang, Hai
  • Vorobyov, Segiy A
  • Ngo, Duy Trong
• Publication Date: 2016-7

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References;
• Pagination: pp 5810-5819
• Serial:
  • IEEE Transactions on Vehicular Technology
  • Volume: 65
  • Issue Number: 7
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • ISSN: 0018-9545
  • Serial URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=25

Subject/Index Terms

• TRT Terms: Radio relay systems; Resource allocation; Wireless communication systems
• Uncontrolled Terms: Fading channels (Wireless networks); Multicasting; Rayleigh channels
• Subject Areas: Data and Information Technology; Highways;

Filing Info

• Accession Number: 01611649
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 23 2016 11:19AM