UMTS波段干扰下AWGN信道UWB系统性能研究

2002 IEEE Conference on Ultra Wideband Systems and Technologies (IEEE Cat. No.02EX580) Pub Date : 2002-05-21 DOI:10.1109/UWBST.2002.1006384

M. Hämäläinen, R. Tesi, J. Iinatti

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引用次数: 38

摘要

本文研究了当UMTS/WCDMA波段存在干扰时，超宽带(UWB)系统在AWGN信道中的性能。在上行链路和下行链路的情况下，频分双工模式中的干扰带被认为是完全覆盖的。该干扰实际上被建模为在预定义的UMTS频带中具有频谱的自脉冲干扰。通过误码率作为信噪比和干扰功率比的函数来研究非编码超宽带系统的性能。为了进行更深入的研究，选择了几种通用高斯脉冲的修正。超宽带系统基于跳时和直接序列扩频技术，利用二进制基带脉冲幅度数据调制。结果表明，当干扰信号与UWB系统标称中心频率重叠时，UWB系统性能下降最大。基于跳时概念的超宽带系统似乎优于基于相应直接序列概念的超宽带系统。然而，在高干扰功率下，超宽带性能趋于收敛。

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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On the UWB system performance studies in AWGN channel with interference in UMTS band

This paper studies the performances of ultra wideband (UWB) systems in an AWGN channel when interference in the UMTS/WCDMA band is present. The interfering band in the frequency division duplexing mode has been considered to be fully covered for both uplink and downlink cases. The interference is actually modelled as sinc-pulse jamming having a spectrum in a predefined UMTS band. The uncoded UWB system performance is studied through the bit-error-rate as a function of signal-to-noise ratio as well as jamming-to-signal power ratio. Several modifications of a generic Gaussian pulse have been selected for the deeper study. The UWB systems are based on time hopping and direct sequence spread spectrum techniques, which utilizes a binary baseband pulse amplitude data modulation. The results showed that UWB system performance degradation is the highest when the interfering signal and the nominal center frequency of the UWB system overlap. UWB systems based on the time hopping concept seem to outperform those based on the corresponding direct sequence concepts. However, for high values of interfering power, the UWB performances are converging.

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来源期刊

2002 IEEE Conference on Ultra Wideband Systems and Technologies (IEEE Cat. No.02EX580)

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