Hardware implementation of FFT-based spectrum sensing techniques for cognitive radio

A Survey of Energy and Spectrum Harvesting Technologies and Protocols for Next Generation Wireless Networks

“…Each segment is further divided into multiple narrowbands, and spectral occupancy is found out using binary hypotheses tests. Hardware implementation of FFTbased spectral correlation and pilot sensing SS framework is implemented in [117] on FPGA as per IEEE 802.22 standard. An adaptive multiband SS is derived in [118], where the framework incorporates two phases, the exploration phase and the detection phase, where several spectral holes are recognized among the surviving channels.…”