Combined Channel Aggregation and Fragmentation Strategy in Cognitive Radio Networks

Details Combined Channel Aggregation and Fragmentation Strategy in Cognitive Radio Networks Combined Channel Aggregation and Fragmentation Strategy in Cognitive Radio Networks

2012-03-22

arxiv.org/abs/1203.4913v1

Computer Science

Networking and Internet Architecture

5 pages, 6 figures, submitted to VTC2012-Fall

Scientific paper

In cognitive radio networks, channel aggregation (CA) and channel fragmentation (CF) techniques have been proposed to enhance the spectrum utilization. While previous literatures study them almost independently, in this paper, we combine CA and CF innovatively and present a new spectrum sharing strategy named CAF (Channel Aggregation and Fragmentation). The performance under our strategy is analyzed using a continuous time Markov chain model in terms of blocking probability, dropping probability, spectrum utilization and throughput of secondary users. Both analytical and simulation results show that our strategy lowers the blocking and dropping probabilities and enhances the spectrum utilization and throughput significantly.

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