Telecommunications

Research Reports on Electronics and Communications from University of California Provide New Insights

  2012 AUG 8 (VerticalNews) -- By a News Reporter-Staff News Editor at Telecommunications Weekly -- Fresh data on Electronics and Communications are presented in a new report. According to news originating from Davis, California, by VerticalNews correspondents, research stated, "Cognitive radio systems capable of opportunistic spectrum access represent a new paradigm for improving the efficiency of current spectrum utilisation. In this work, the authors present a novel cognitive channel access method based on learning from both primary channel transmissions and the receiver ARQ feedback signals."

  Our news journalists obtained a quote from the research from the University of California, "This new sensing-plus-confirmation scheme constitutes a non-trivial generalisation of the more traditional 'Listen-Before-Talk' (LBT) strategy that merely listens to and yields to primary transmissions regardless of primary receiver (PRx) responses. Our new method exploits the bi-directional and interactive nature of most wireless communication links to facilitate better opportunistic secondary access while achieving PRx protection. By allowing the secondary users to learn from both primary transmissions and the corresponding receiver confirmations, our approach allows secondary cognitive users to exploit critical information that PRxs regularly send to their transmitters."

  According to the news editors, the researchers concluded: "The authors show that, by monitoring both primary transmissions and receiver feedback signals, secondary radio access can improve throughput over the traditional LBT while limiting the probability of collision with primary user signals."

  For more information on this research see: Improved spectrum access control of cognitive radios based on primary ARQ signals. IET Communications, 2012;6(8):900-908. IET Communications can be contacted at: Inst Engineering Technology-Iet, Michael Faraday House Six Hills Way Stevenage, Hertford SG1 2AY, England. (The Institution of Engineering and Technology - www.theiet.org/; IET Communications - www.ietdl.org/IET-COM)

  The news correspondents report that additional information may be obtained from F.E. Lapiccirella, University of California, Davis, CA 95616, United States.

  Keywords for this news article include: Davis, California, United States, Wireless Technology, Wireless Communication, North and Central America, Electronics and Communications

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