Comparison of Channel Information Acquisition Schemes in Cognitive Radio System

Provided by: Institute of Electrical & Electronic Engineers
Topic: Mobility
Format: PDF
In this paper, the authors compare the performance of two major spectrum information acquisition schemes in cognitive radio system, which are geo-location database based scheme and spectrum sensing based scheme. Although these two schemes are the major spectrum information acquisition schemes which are mainly considered in current researches on cognitive radio system, the comparison of two schemes has not been considered in previous works. In the comparison, they propose a new channel model for the cognitive environment which has three states, because recent measurements show that two-state Markov Chain model which has been widely used is not appropriate to model the cognitive environment.

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