Impact of frequency-selective fading on distributed dynamic channel assignment in a DS-CDMA multi-hop virtual cellular network

Eisuke Kudoh, Fumiyuki Adachi

Research output: Contribution to journalConference articlepeer-review

Abstract

Recently, we have proposed a DS-CDMA multi-hop virtual cellular network (VCN). The channel segregation dynamic channel allocation (CS-DCA) is applied for wireless multi-hop links in each virtual cell. If all wireless ports in a virtual cell have successfully allocated channels, the channel allocation is successful; otherwise the channel allocation is considered to have failed. In this paper, the failure rate is examined by computer simulation. It is shown that CS-DCA provides significantly smaller failure rate compared to fixed channel allocation (FCA). It is also found that the CS-DCA failure rate is sensitive to the frequency-selectivity of the channel. The CS-DCA failure rate becomes minimum at a certain number L of propagation paths. This suggests that the spreading bandwidth should be carefully chosen.

Original languageEnglish
Pages (from-to)3481-3485
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume60
Issue number5
Publication statusPublished - 2004 Dec 1
Event2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States
Duration: 2004 Sep 262004 Sep 29

Keywords

  • Adhoc network
  • Channel segregation
  • Dynamic channel allocation
  • Multi-hop network
  • Routing
  • Virtual cellular network

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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