脉冲位置调制超宽带信号的交叉调制干扰

MILCOM 2005 - 2005 IEEE Military Communications Conference Pub Date : 2005-10-17 DOI:10.1109/MILCOM.2005.1605872

H. Çelebi, H. Arslan

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引用次数: 8

摘要

超宽带信号的检测问题取决于传输过程中使用的调制方案的类型。介绍了脉冲位置调制(PPM)超宽带信号的交叉调制干扰(CMI)。分析了CMI对选择性rake (SRake)、发射参考(TR)和能量检测器(ED)接收机检测机理的影响。通过计算机仿真研究了三种接收机在CMI存在和不存在情况下的误码率性能。结果表明，CMI量随调制指数的变化而变化，并且由于CMI引起的性能下降可能非常严重，这取决于三个接收机的调制指数。考虑CMI效应，验证了传统最优PPM准则和正交PPM准则的有效性。结果表明，在CMI存在的情况下，三种接收机的常规正交PPM和N-SRake和TR接收机的常规最佳PPM准则都可以使用。另一方面，使用传统的最优PPM准则对ED接收机的误码率性能产生误差底限，该准则不适用于ED接收机

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Cross-modulation interference for pulse position modulated UWB signals

The detection issues of UWB signals depend on the type of modulation scheme used during the transmission. The cross-modulation interference (CMI) for pulse position modulated (PPM) UWB signaling is introduced. The effects of CMI on the detection mechanism of selective-Rake (SRake), transmitted-reference (TR) and energy detector (ED) receivers are analyzed. The bit-error-rate (BER) performance of all three receivers in the presence and absence of CMI are studied through computer simulations. The results show that the CMI amount varies according to the modulation index and the performance degradation due to CMI can be extremely severe depending on the modulation index for all three receivers. The validity of the conventional optimal and orthogonal PPM criteria are checked considering the CMI effects. The results demonstrate that the conventional orthogonal PPM for all three receivers and the conventional optimal PPM criterion for N-SRake and TR receivers can be used in the presence of CMI. On the other hand, the BER performance of ED receivers using the conventional optimal PPM criterion result in error floor and this criterion is not valid to be used for ED receivers

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MILCOM 2005 - 2005 IEEE Military Communications Conference

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