Because of the obvious advantage in short-range wireless communication, ultra wide-band (UWB) systems have drawn great attention. Since UWB signals use extremely broad bandwidth for transmission by sharing the same frequency spectrum with other existing systems, interference with other systems is caused, which become the bottleneck of the UWB technique development. In this paper, based on compressed Chirp pulses and Hermite orthogonalization process, a novel method to generate UWB pulses is proposed. Selecting significant TD-SCDMA as the co-existing system, the principle, application and effect of the new pulse shaping method in the interference mitigation between UWB with TD-SCDMA system are discussed in detail.This paper is made up of the following parts:First, the definition, character and application of UWB technique are overviewed. A variety of interference mitigation solutions for UWB and other systems are introduced. The advantages and shortcomings of the traditional pulses in UWB systems application are pointed out.
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