A Survey on Resource Management in Cognitive Radio Networks

PhD Qualifying Examination


Title: "A Survey on Resource Management in Cognitive Radio Networks"

Mr. Peng LIN


Abstract:

Radio spectrum is one of the most important resources for wireless 
communication. Recent reports show that almost all spectrums have been 
allocated, but the usage is seriously unbalanced. The concept of dynamic 
spectrum allocation is proposed for more flexible usage of spectrum, which 
brings in lots of new topics: spectrum sensing and spectrum sharing 
mechanisms, etc. In order to access the primary spectrum, secondary users 
should first conduct spectrum sensing to avoid the confliction with 
primary users. The fast developing technique compressive sensing is 
believed to bring a revolution to the CR spectrum sensing area. For 
accessing the spectrum, secondary users need to coexist in the shared 
bands. The various mechanisms of coexistence are discussed in this survey. 
We also investigate the previous researches for spectrum sharing among 
primary and secondary users. Besides, the sharing among primary networks 
remains an open problem. We discuss the motivation of primary networks and 
the current methodology. In this survey, we take an overview of the 
current researches for advanced spectrum sensing technique and spectrum 
sharing mechanisms. We summarize key challenges in these aspects and 
present the existing solutions and our considerations.


Date:  			Thursday, 28 January 2010

Time:                   3:00pm - 5:00pm

Venue:                  Room 3494
 			lifts 25/26

Committee Members:      Prof. Mounir Hamdi (Supervisor)
 			Dr. Qian Zhang (Supervisor)
 			Prof. Bo Li (Chairperson)
 			Dr. Gary Chan
 			Dr. Lin Gu


**** ALL are Welcome ****