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引用本文：

姚恒.直扩超宽带信号在移动通信系统中的干扰功率分析[J].电讯技术，2012，52（10）： - . [点击复制]
YAO Heng.Analysis of DS-UWB interference power at mobile communication systems[J].，2012，52（10）： - . [点击复制]

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直扩超宽带信号在移动通信系统中的干扰功率分析
姚恒
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(上海理工大学光电信息与计算机工程学院，上海 200093)

摘要:

对直扩超宽带（DSUWB）信号分别于时域和频域进行描述,并对其功率谱密度进行了详细研究。在干扰功率计算中，选择现有3G移动标准宽带码分多址（WCDMA）、码分多址200 0（CDMA2000）和时分同步码分多址（TDSCDMA）作为被干扰系统。与UWB信号带宽相比，被干扰系统的带宽相对较窄，因此假设在接收端频谱是平坦的。研究结果表明，可以通过调整DSUWB脉冲波形和脉冲成形因子α来减少干扰功率。通过权衡和比较，脉冲成形因子小于0.3 ns的三阶高斯脉冲是一个最优选择。

关键词: 直扩超宽带 3G系统功率密度谱干扰功率脉冲成形因子

DOI：

基金项目:上海大学博士生创新基金(SHUCX101090)

Analysis of DS-UWB interference power at mobile communication systems

YAO Heng

()

Abstract:

A Direct SpreadUltra Wideband (DSUWB) system model is described in time and frequency domain. Power Spectral Density (PSD) of DSUWB system is researched. In the interference power calculation, the victim rece ivers are supposed to be current 3G mobile communication systems, including Wide band Code Division Multiple Access (WCDMA), Code Division Multiple Access 2000 ( CDMA2000) and Time DivisionSynchronous Code Division Multiple Access (TDSCDM A). Interference Power model is presented by assuming that the spectrum is flat at the victim receiver due to relatively narrow bandwidth compared with the UWB si gnal band. The results show that the interference power can be reduced by regula ting the pulse waveform and pulse shape factor α in DSUWB model. The stud y reveals that Gaussian 3rd derivative pulse with pulse shape factor smaller than 0.3 ns is a good choice for current third generation (3G) systems by comparison and tr adeoff.

Key words: DS UWB 3G system power spectral density interference power pulse shape factor