A New Channel Parameter For Cognitive Radio

Spectrum leasing has made more efficient utilization for the limited spectrum resource. While increasing the spectrum utilization, spectrum leasing also brings in some problem. Spectrum switch in the leasing process not only introduces in additional system overhead, but also decreases the secondary user's Qos. In this paper, we model the wireless system as a M/G/1 queue with preemptive priority, propose a new channel parameter to analyze the switch performance. Algorithms are suggested to reduce system overhead and to improve secondary user's Qos based on the new parameter.

[1]  Joseph Mitola,et al.  Cognitive radio: making software radios more personal , 1999, IEEE Wirel. Commun..

[2]  Kang G. Shin,et al.  What and how much to gain by spectrum agility? , 2007, IEEE Journal on Selected Areas in Communications.

[3]  Georgios B. Giannakis,et al.  A Wavelet Approach to Wideband Spectrum Sensing for Cognitive Radios , 2006, 2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications.

[4]  Charles W. Bostian,et al.  Cognitive Radio Formulation and Implementation , 2006, 2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications.

[5]  R. M. Buehrer,et al.  Game theoretic analysis of a network of cognitive radios , 2002, The 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002..

[6]  Maziar Nekovee,et al.  Dynamic Spectrum Access with Cognitive Radios: Future Architectures and Research Challenges , 2006, 2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications.

[7]  Joseph Mitola,et al.  The software radio architecture , 1995, IEEE Commun. Mag..

[8]  Simon Haykin,et al.  Cognitive radio: brain-empowered wireless communications , 2005, IEEE Journal on Selected Areas in Communications.

[9]  Ravi Prakash,et al.  MAC-layer scheduling in cognitive radio based multi-hop wireless networks , 2006, 2006 International Symposium on a World of Wireless, Mobile and Multimedia Networks(WoWMoM'06).

[10]  Michael A. Temple,et al.  Cognitive radio - an adaptive waveform with spectral sharing capability , 2005, IEEE Wireless Communications and Networking Conference, 2005.

[11]  Joseph Mitola,et al.  Cognitive Radio An Integrated Agent Architecture for Software Defined Radio , 2000 .

[12]  Venkatesan Guruswami,et al.  2006 IEEE International Symposium on Information Theory , 2006 .

[13]  Dimitri P. Bertsekas,et al.  Data Networks , 1986 .