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Spectral Analysis of UWB Signal Based on Combined Modulation Scheme with Time-Hopping Code

机译:基于跳频代码组合调制方案的UWB信号的光谱分析

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This paper present a uniform signal model of two combined modulation schemes in ultra-wideband (UWB) system, which are combined bi-phase shift keying and pulse shape modulation (BPSK-PSM) and combined on-off keying and pulse shape modulation (OOK-PSM). Both analytical expressions and simulation results for the power spectral density (PSD) of the proposed schemes with time hopping code are provided. The contrast analysis between two schemes and the impact of different time hopping code on the PSD are also discussed. Theoretical analyses and simulation results show that designing a set of proper orthogonal pulses is very important in UWB system based on pulse shape modulation (PSM) scheme.
机译:本文呈现了超宽带(UWB)系统中的两个组合调制方案的均匀信号模型,它们是组合的双相移键控和脉冲形状调制(BPSK-PSM)以及组合开关键控和脉冲形状调制(OOK -PSM)。提供了具有时间跳频代码的所提出的方案的功率谱密度(PSD)的分析表达和模拟结果。还讨论了两种方案与不同时间跳跃代码对PSD上的影响的对比分析。理论分析和仿真结果表明,在基于脉冲形状调制(PSM)方案的UWB系统中,设计一组适当的正交脉冲非常重要。

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