模拟电视频带数字视频传输扩频广播系统的频谱叠加:初步估计

2000 10th Mediterranean Electrotechnical Conference. Information Technology and Electrotechnology for the Mediterranean Countries. Proceedings. MeleCon 2000 (Cat. No.00CH37099) Pub Date : 2000-05-29 DOI:10.1109/MELCON.2000.880073

D. Dres, P. Constantinou, A. Kastereli

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引用次数: 1

摘要

本文探讨了模拟电视与扩频系统共享频谱的条件。在初步评估和有限数量的实验室测量支持本文的结论后，本文得出结论，恒定振幅扩频系统引起的干扰应该与相同总功率的传统窄带调频信号引起的干扰相当，前提是扩频信号的RF带宽小于2mhz。当频谱扩展大于8mhz时，扩频系统应该具有一定的优势。此外，为了研究电视信号对扩频系统的干扰，推导了一个表示电视信号功率谱的简单数学方程，并给出了传统BPSK/QPSK扩频系统误码率的一般公式。

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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Spectral overlay of spread spectrum broadcasting system for digital video delivery on analog TV band: a preliminary estimate

The paper examines the conditions under which analog television and a spread spectrum system can share spectrum. After a preliminary assessment and a limited number of laboratory measurements which support the conclusions of the paper, the paper concludes that the interference caused by a constant amplitude spread spectrum system should be comparable to that caused by a conventional, narrowband FM signal of same total power, provided the spread spectrum signal has an RF bandwidth less than 2 MHz. With spectrum spreads greater than 8 MHz the spread spectrum system should have some advantage. Furthermore, in order to examine the interference caused by the TV signal in the spread spectrum system a simple mathematical equation representing the power spectrum of the TV signal is derived, and a general formulation of the bit error rate of a conventional BPSK/QPSK spread spectrum system is represented.

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2000 10th Mediterranean Electrotechnical Conference. Information Technology and Electrotechnology for the Mediterranean Countries. Proceedings. MeleCon 2000 (Cat. No.00CH37099)

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