Consensus-based cognitive radio assisted cooperative communications

Authors:
Mahdy Saedy;Brian Kelley
Affiliations:
University of Texas at San Antonio, San Antonio, TX, USA;University of Texas at San Antonio, San Antonio, TX, USA
Venue:
Proceedings of the 9th ACM international symposium on Mobility management and wireless access
Year:
2011

Citing 3
Cited 3

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Distributed Cooperative Synchronization for Large-Scale 4G Wireless Sensor Networks Using CAZAC Sequences

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Biologically Inspired Networks: On Energy Efficient Event-Driven Data Collection for Wireless Sensor Networks

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Abstract

This paper develops a framework for cooperative communications between multiple clusters of nodes connected in ad hoc fashion. The intermediate clusters are used to cooperatively relay the information from nodes in source cluster to the nodes in destination clusters. Since the nodes in relay clusters use the wireless resources as primary users, the relay clusters are Cognitive Radio (CR) enabled so as to make efficient use of idle resources by sensing, reporting and sharing cognitive parameters without any service interruption in relay clusters. We also developed a consensus-based power management scheme to adjust and maintain the transmit power and consequently the bitrate in relay clusters at an acceptable level to make sure that there are always connecting paths for delivering the packets. We demonstrate the performance improvement in terms of outage probability and end-to-end Symbol Error rate (SER) and Blocking Rate for M-QAM modulation in Rayleigh fading environment with AWGN.