Performance analysis of a control-free dynamic spectrum access scheme

Chunsheng Xin, Min Song, Liangping Ma, Chien Chung Shen

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

In dynamic spectrum access (DSA), secondary users (SUs) dynamically search and access spectrum bands unused by primary users to communicate. We propose a DSA scheme where it does not require a control channel for coordination and SU nodes do not need to exchange control messages to rendezvous. Every SU node selects its operational channel independently. When a node wants to rendezvous with another node, the former estimates the operational channel of the latter. The scheme ensures that such rendezvous has a high probability of success, while operational channels are diversified to reduce co-channel interference and hence increase throughput. We develop a mathematical model to analyze the performance of the scheme. Both analytical and simulation results show that the scheme achieves very good performance.

Original languageEnglish
Article number6059443
Pages (from-to)4316-4323
Number of pages8
JournalIEEE Transactions on Wireless Communications
Volume10
Issue number12
DOIs
StatePublished - Dec 2011

Keywords

  • Dynamic spectrum access
  • MAC
  • channel selection
  • cognitive radio networks
  • control-free
  • performance analysis

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