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首页> 外文会议>Electromagnetic Compatibility, 2003. EMC '03. 2003 IEEE International Symposium on >Spectral shaping and interference issues in ultra wideband radio systems
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Spectral shaping and interference issues in ultra wideband radio systems

机译：超宽带无线电系统中的频谱整形和干扰问题

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In this paper, main issues related to spectral analysis of ultra-wideband (UWB) signals are reviewed and discussed. The effects of pulse shape, code sequences and modulation format are evidenced in the expression of power spectral density of the signal. As for the modulation format, both pulse position modulation (PPM) and pulse amplitude modulation (PAM) are considered, while time hopping (TH) is considered for coding. The main goal of the proposed analysis is to define a framework for UWB signal design, that accounts for coexistence issues with other systems in the presence of uncoordinated operations and may drive a trade-off solution between UWB design objectives (e.g., maximizing link capacity by reducing the impact of narrowband interference and multiple access interference, maximizing ranging accuracy) and constraints (typically the amount of interference towards other systems, such as the emission mask imposed by FCC). The final purpose is to explicitly include coexistence issues in a rigorous design approach of distributed ad-hoc wireless sensor networks that rely on a UWB physical layer.
机译：本文对与超宽带（UWB）信号频谱分析有关的主要问题进行了回顾和讨论。脉冲功率，代码序列和调制格式的影响在信号的功率谱密度表达中得到了证明。对于调制格式，考虑了脉冲位置调制（PPM）和脉冲幅度调制（PAM），而考虑了跳时（TH）进行编码。提出的分析的主要目标是，为UWB信号设计定义一个框架，该框架解决在操作不协调的情况下与其他系统共存的问题，并可能推动UWB设计目标之间的权衡解决方案（例如，最大程度地提高链路容量）。减少窄带干扰和多址干扰的影响，最大程度地提高测距精度）和约束条件（通常是对其他系统的干扰量，例如FCC施加的发射掩模）。最终目的是在依赖UWB物理层的分布式自组织无线传感器网络的严格设计方法中明确包含共存问题。

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