Capacity Limits of Cognitive Radio with Distributed and Dynamic Spectral Activity

Computer Science – Information Theory

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

6 pages

Scientific paper

We investigate the capacity of opportunistic communication in the presence of dynamic and distributed spectral activity, i.e. when the time varying spectral holes sensed by the cognitive transmitter are correlated but not identical to those sensed by the cognitive receiver. Using the information theoretic framework of communication with causal and non-causal side information at the transmitter and/or the receiver, we obtain analytical capacity expressions and the corresponding numerical results. We find that cognitive radio communication is robust to dynamic spectral environments even when the communication occurs in bursts of only 3-5 symbols. The value of handshake overhead is investigated for both lightly loaded and heavily loaded systems. We find that the capacity benefits of overhead information flow from the transmitter to the receiver is negligible while feedback information overhead in the opposite direction significantly improves capacity.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Capacity Limits of Cognitive Radio with Distributed and Dynamic Spectral Activity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Capacity Limits of Cognitive Radio with Distributed and Dynamic Spectral Activity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacity Limits of Cognitive Radio with Distributed and Dynamic Spectral Activity will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-224498

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.