6533b827fe1ef96bd1285956

RESEARCH PRODUCT

Complexity analysis of spectrum access strategies with channel aggregation in CR networks

Frank Y. LiLei JiaoIndika A. M. Balapuwaduge

subject

Cognitive radioComputer scienceDistributed computingSpectrum (functional analysis)Adaptation (computer science)SimulationCommunication channel

description

Cognitive radio has been introduced to increase spectrum utilization efficiency. To further improve bandwidth utilization of cognitive radio users, channel aggregation (CA) techniques can be adopted for spectrum access. In this paper, we analyze the complexity of three CA strategies, in terms of required amount of handshakes for channel adaptation due to primary and secondary user activities. Continuous time Markov chain models are developed to evaluate the total number of handshakes required per unit time by different CA strategies and the analytical results are validated by simulations. Numerical results reveal that the complexity of CA strategies depends on the capability and the design principle of spectrum adaptation.

yearjournalcountryeditionlanguage
2012-12-012012 IEEE Global Communications Conference (GLOBECOM)
https://doi.org/10.1109/glocom.2012.6503292