电视载波对窄带数字载波的干扰

IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record Pub Date : 1991-12-02 DOI:10.1109/GLOCOM.1991.188433

H. A. Henriques, F. Abbas, M. Nakhla

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引用次数: 0

摘要

作者介绍了用实时视频调制的各种类型卫星电视载波的功率谱密度的实验室测量结果，这种方式可以很容易地被希望根据CCIR建议523保护其窄带数字载波的卫星网络运营商利用。从这些结果中可以看出，虽然对于仅使用能量分散信号调制的电视载波，通过使用其他类型的波形代替帧率能量分散可以大大改善干扰情况，但使用实时视频调制载波将限制改进的好处，因为它现在代表了最坏的情况。为此，提出了一种特殊的电视载波传输操作程序，可以在不更换帧率能量分散信号的情况下改善干扰情况

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Interference from television carriers into narrowband digital carriers

The authors present results of laboratory measurements of the power spectral density of various types of satellite television carriers modulated with live video in a way that can be readily utilized by satellite network operators wishing to protect their narrowband digital carriers according to CCIR Recommendation 523. From these results, it can be seen that, although for television carriers modulated with energy dispersal signal alone a large improvement in the interference situation can be obtained by replacing frame rate energy dispersal with other types of waveforms, the modulation of the carrier with live video will limit the benefit of the improvement since it will now represent the worst case. For this reason, a special operational procedure for the transmission of television carriers is suggested which could improve the interference situation without the need to replace the frame rate energy dispersal signal.<>

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IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record

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