UWB technology, with its unique advantages, has drawn great attention as the next generation of short-range high-speed wireless communication technology. DS-UWB is particularly suitable for indoor dense multipath environment and high-speed wireless communication. The outstanding feature is to perform a full reuse of spectrum resource. This paper mainly researches the interference suppression of DS-UWB to other narrowband communication systems. From both the frequency domain and time domain, a new soft spect...