Spectrum Sensing with Improved Energy Detectors in Impulsive Noise Environment

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  • Cognitive radio (CR) is a technology that can alleviate the problem of radio frequency (RF) spectrum scarcity by opportunistically accessing the unused RF slots called spectrum holes. The detection of spectrum holes, called spectrum sensing, is the foremost task for utilization of the unused RF spectrum. Of the several spectrum sensing techniques available, the energy detector (ED) is recognized for its simple structure and non-coherent nature. However, the performance of the ED is known to degrade in multipath fading, an inherent phenomenon in wireless propagation. (As cited in abstract.)

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    Attribution-NonCommercial 4.0 International