Abstract: This paper gave a scheme of dynamically obtaining adaptive emission mask based on spectrum sensing to adapt to spectrum environment and be compatible with FCC spectral mask. Then, a method to generate adaptive UWB shaping pulse was proposed based on weight combination of prolate spheroidal wave functions(PSWFs) matching UWB multiple sub-band spectral mask. The simulation results show that the pulse waveforms shaped by this method conform the spectral mask constraint for UWB, and adapt to dynamical variety of the spectral mask .

Key words: ultra wideband system, adaptive spectral mask, adaptive pulse, prolate spheroidal wave functions