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中文摘要：
基于啁啾（chirp）脉冲的超宽带系统具有成本低、耗能少和较高的系统增益等优点。本文在啁啾理论的基础上,提出一种针对多用户超宽带系统的新型啁啾波形。通过详尽分析该编码的相关性能,验证了该多址方案的合理性。利用多啁啾波形编码构建的多用户超宽带通信系统,兼具了脉冲超宽带和多带超宽带的优点。本文对基于多啁啾脉冲波形的多用户超宽带通信系统进行了详尽的理论分析,并进行了性能仿真,仿真结果表明：相对于传统脉冲超宽带系统,这种多啁啾波形的多用户系统具有更好的抵抗多址干扰的能力。
英文摘要：
UWB based on chirp waveform has the advantages of low cost, low power consumption and high processing gain. A UWB system based on multi-chirp waveform is employed to construct a multi-user UWB system, which enables the system gain merits of both IR-UWB as well as OFDM-UWB. System performance for multi-user UWB using multi-chirp waveform is theoretically analyzed with details. Simulation results are given to show that such a system outdoes traditional UWB in the aspect of mitigating multi-user interference.
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