Cognitive radio is considered as an intelligent and adaptive approach for wide utilization of spectrum sources. The Cognitive radio works on the basis of spectrum sensing. While sensing the spectrum some of the considerations should be followed. They are the unused spectrum should be acquired without causing interference with the principle user and the cognitive radio ought to be able to sensing the spectrum as soon as feasible and with greater accuracy. In this paper we suggest various techniques of spectrum sensing for easy accessing of spectrum. We believe, Energy detection is considered as best suited approach by measuring the noise in the received signal. There is a chance of increase in the detection performance if the threshold is dynamically selected based on this noise level. So, on this depend on the above techniques we advise a way to experience the spectrum based at the noise estimation of the received signal by the usage of a blind method.
Volume 11 | 01-Special Issue
Pages: 870-873