Discrete Wavelet Transform Based Spectrum Sensing in Futuristic Cognitive Radios

Author

Chandran, Anand ; Karthik, Anantha R. ; Kumar, Arun ; Siva, Subramania M. ; Iyer, Uma S. ; Ramanathan, R. ; Naidu, Roshini C.

Author_Institution

Dept. of ECE, Amrita Vishwa Vidyapeetham, Coimbatore, India

fYear

2011

fDate

24-25 Feb. 2011

Firstpage

1

Lastpage

4

Abstract

With the advent of an era of wireless communication, the number of users is on the rise, the result of which is spectral congestion. Cognitive Radio systems provide an intelligent and an attractive solution to this technical crisis. Spectrum Sensing is indispensable for the functioning of Cognitive Radio and helps in efficient spectrum utilization. In this paper, a wavelet based approach to spectrum sensing is dealt with. Wavelets provide a new dimension to tackle spectrum sensing. This method is comparatively easier and more reliable than the conventional energy detector. An algorithm for spectrum sensing has been proposed and the results obtained for various scenarios are tabulated. A comparison with the conventional energy detector has been performed to substantiate the proposal. Some important conditions are also specified.

Keywords

cognitive radio; discrete wavelet transforms; radio spectrum management; conventional energy detector; discrete wavelet transform; futuristic cognitive radio system; spectral congestion; spectrum sensing; wireless communication; Cognitive radio; Detectors; Discrete wavelet transforms; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Devices and Communications (ICDeCom), 2011 International Conference on

Conference_Location

Mesra

Print_ISBN

978-1-4244-9189-6

Type

conf

DOI

10.1109/ICDECOM.2011.5738461

Filename

5738461