Computer Science – Information Theory
Scientific paper
2011-05-03
Computer Science
Information Theory
21 page, technical report
Scientific paper
Cognitive radios (CR) are intelligent radio devices that can sense the radio environment and adapt to changes in the radio environment. Spectrum sensing and spectrum access are the two key CR functions. In this paper, we present a spectrum sensing error aware MAC protocol for a CR network collocated with multiple primary networks. We explicitly consider both types of sensing errors in the CR MAC design, since such errors are inevitable for practical spectrum sensors and more important, such errors could have significant impact on the performance of the CR MAC protocol. Two spectrum sensing polices are presented, with which secondary users collaboratively sense the licensed channels. The sensing policies are then incorporated into p-Persistent CSMA to coordinate opportunistic spectrum access for CR network users. We present an analysis of the interference and throughput performance of the proposed CR MAC, and find the analysis highly accurate in our simulation studies. The proposed sensing error aware CR MAC protocol outperforms two existing approaches with considerable margins in our simulations, which justify the importance of considering spectrum sensing errors in CR MAC design.
Hu Donglin
Mao Shiwen
No associations
LandOfFree
A Sensing Error Aware MAC Protocol for Cognitive Radio Networks 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 A Sensing Error Aware MAC Protocol for Cognitive Radio Networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Sensing Error Aware MAC Protocol for Cognitive Radio Networks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-692322