Effective Management of Secondary User's Density in Cognitive Radio Networks

Chunxiao JIANG  Shuai FAN  Canfeng CHEN  Jian MA  Yong REN  

Publication
IEICE TRANSACTIONS on Communications   Vol.E93-B   No.9   pp.2443-2447
Publication Date: 2010/09/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.2443
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Network Management/Operation
Keyword: 
density control of secondary users,  deployment of secondary network,  achievable rate of secondary users,  cognitive radio networks,  

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Summary: 
Cognitive radio has emerged as an efficient approach to reusing the licensed spectrums. How to appropriately set parameters of secondary user (SU) plays a rather important role in constructing cognitive radio networks. In this letter, we have analyzed the theoretical value of SUs' density, which provides a standard for controlling the number of SUs around one primary receiver, in order to guarantee that primary communication links do not experience excessive interference. The simulation result of secondary density well matches with the theoretical result derived from our analysis. Additionally, the achievable rate of secondary user under density control is also analyzed and simulated.