Using Non-inear Chirp Waveform to Suppress Narrowband Interference in UWB System

In the approved frequency band of ultra-wideband (UWB), some narrowband communication applications are concernful interference sources. UWB systems are affected by these narrowband interference sources and the system performance drops down with the interference power increased. This paper offers a method of suppressing this inband narrowband interference by introducing a kind of non-linear chirp waveform. By using proposed non-linear chirp waveform, the effects of one or more narrowband interference sources with different frequencies can be suppressed. System performance of the UWB system in the narrowband interference environment can be improved. Computer simulations are executed in different scenarios and simulation results confirm that the proposed schemes are better than the traditional linear chirp ones