A photonic integrated circuit (PIC) comprised of an 11 cm long multimode speckle waveguide, a 1 × 32 splitter, and linear grating coupler array is fabricated utilized to receive 2 GHz radio-frequency (RF) signal bandwidth from 2.5 4.5 using compressive sensing (CS). Incoming RF signals are modulated onto chirped optical pulses which input the waveguide. The waveguide produces random projections...

It is well known that the successful operation of cognitive radio (CR) between CR transmitter and CR receiver (CR link) relies on reliable spectrum sensing. To network CRs requires more information from spectrum sensing beyond traditional techniques, executing at CR transmitter and further information regarding the spectrum availability at CR receiver. Redefining the spectrum sensing along with...