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  • Qing Zhao, B. M. Sadler
  • Computer Science
  • IEEE Signal Processing Magazine
  • 2007 (First Publication: 1 May 2007)
  • Compounding the confusion is the use of the broad term cognitive radio as a synonym for dynamic spectrum access. As an initial attempt at unifying the terminology, the taxonomy of dynamic spectrumContinue Reading
  • Yunxia Chen, Qing Zhao
  • Computer Science
  • IEEE Communications Letters
  • 2005 (First Publication: 1 November 2005)
  • We derive a general formula for the lifetime-of wireless sensor networks which holds independently of the underlying network model including network architecture and protocol, data collectionContinue Reading
  • Qing Zhao, Bhaskar Krishnamachari, Keqin Liu
  • Mathematics, Computer Science
  • IEEE Transactions on Wireless Communications
  • 2008 (First Publication: 30 November 2007)
  • We consider a multi-channel opportunistic communication system where the states of these channels evolve as independent and statistically identical Markov chains (the Gilbert- Elliot channel model).Continue Reading