UWB COGNITIVE RADIO APPARATUS BASED ON CHIRP WAVEFORM

摘要

A UWB wireless apparatus based on a chirp waveform is provided to reduce interference through an expected spectrum notch and reduce a process time, reduce power consumption and improve the complexity of the system. A spectrum measurement unit(10) estimates a spectrum content in a wireless frequency environment. A threshold unit(20) generates spectrum without interference by using the estimated spectrum. A time-frequency mapping unit(30) converts the output signal of the critical part into the signal of the time domain. A chirp waveform generation unit(50) produces the linear chirp waveform.