DocumentCode :
2507765
Title :
A novel spectrum sensing and accessing framework for cognitive radio in mobile environment
Author :
Mathew, Bini ; Manuel, Ebin M.
Author_Institution :
Dept. of Electron. & Commun. Eng., Rajiv Gandhi Inst. of Technol., Kottayam, India
fYear :
2015
fDate :
19-21 Feb. 2015
Firstpage :
1
Lastpage :
5
Abstract :
To help unlicensed users to use the maximum available licensed bandwidth, an opportunistic communication technology called cognitive radio, (CR) is developed. It has recently attracted a great deal of research interest. Even though the majority of future wireless devices will be mobile, mobility is yet unexplored in the context of CR. There is no proper framework for mobile CRs to effectively use the available licensed bandwidth. In this paper, a spectrum sensing and accessing framework considering user mobility is proposed. This work removes all the presumptions about user mobility, established in the previous CR based literature. The smooth random mobility model is considered for creating a realistic mobile environment. The CRs are free to travel and cooperate to sense and use the licensed channels. A cognitive base station coordinates all the CRs. The nodes are grouped into clusters based on their geographical placement and all the nodes in a cluster are further split up into small groups based on their relative mobility. Transform Domain Communication System, (TDCS) is employed by the CRs to access the spectrum. The sensing technique being used by each CR is the double threshold energy detection method. Under this framework, the whole licensed channels can be exploited in each cluster if there are enough number of CRs in that cluster. A Matlab simulation is provided for examining the efficiency of the proposed framework.
Keywords :
cognitive radio; mobility management (mobile radio); signal detection; CR; Matlab simulation; TDCS; cognitive base station; cognitive radio; double threshold energy detection method; mobile environment; novel spectrum sensing and accessing framework; opportunistic communication technology; relative mobility; smooth random mobility model; transform domain communication system; user mobility; Cognitive radio; Interference; Measurement; Mobile communication; Mobile computing; Sensors; Cognitive radio; TDCS; double threshold energy detection; mobile environment; spectrum sensing and accessing framework;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing, Informatics, Communication and Energy Systems (SPICES), 2015 IEEE International Conference on
Conference_Location :
Kozhikode
Type :
conf
DOI :
10.1109/SPICES.2015.7091356
Filename :
7091356
Link To Document :
بازگشت