Switch-and-examine node selection for efficient relaying systems

Kyu Sung Hwang, Young-Chai Ko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

The opportunistic relaying in [1] was proposed as an efficient cooperative protocol in the wireless multi-hop systems. However, the opportunistic relaying may still have high complexity as the number of relay nodes increases since the link quality of the paths generated by multiple relay nodes should be monitored. In this paper, we propose a novel multi-hop relay protocol named ?switch and examine node selection? (SENS), where the relay node is selected if its link quality is above a certain threshold which is set to satisfy the required performance and the selected link is maintained unless its link quality does not fall below the threshold. From our derived statistics of the received output signal-to-noise ratio (SNR), we obtain the optimal threshold in terms of the link performance such as the average output SNR, the outage probability, and average error rate. Using the optimal threshold, we show from the analytical and numerical results that the performance of our proposed SENS protocol provides the same performance as the opportunistic relaying protocol while the complexity of our proposed scheme is much lower than the one of opportunistic system.

Original languageEnglish
Title of host publicationIWCMC 2007: Proceedings of the 2007 International Wireless Communications and Mobile Computing Conference
Pages469-474
Number of pages6
DOIs
Publication statusPublished - 2007 Dec 14
EventIWCMC 2007: 2007 International Wireless Communications and Mobile Computing Conference - Honolulu, HI, United States
Duration: 2007 Aug 122007 Aug 16

Other

OtherIWCMC 2007: 2007 International Wireless Communications and Mobile Computing Conference
CountryUnited States
CityHonolulu, HI
Period07/8/1207/8/16

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Keywords

  • Cooperative system
  • Opportunistic relaying
  • Regenerative transmission

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Software
  • Electrical and Electronic Engineering

Cite this

Hwang, K. S., & Ko, Y-C. (2007). Switch-and-examine node selection for efficient relaying systems. In IWCMC 2007: Proceedings of the 2007 International Wireless Communications and Mobile Computing Conference (pp. 469-474) https://doi.org/10.1145/1280940.1281041