Parallel Computation based Spectrum Sensing Implementation for Cognitive Radio

摘要

The past decades witnessed the fast development of the wireless communication technologies and its applications. However, the upgrading demand is contradictory to the limited available radio spectrum resource because of the traditional frequency allocation policy. Cognitive Radio (CR) or Dynamic Spectrum Access (DSA) was proposed to improve the utilization of the assigned but unused radio spectrum [1-3]. The key idea of CR is to utilize the unused radio spectrum assigned to primary users (PUs) via successful spectrum sensing, so that CR nodes will not introduce any interference to primary users during their communication process. Therefore, the ability to sense the spectrum reliably and timely is quite critical to CR.