400MHz的隐藏成本

Archer S. Taylor
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引用次数: 0

摘要

有线电视行业(CATV)经历了过早应用新技术发展的不愉快后果。现在,许多主要市场的特许经营提案都承诺通过增加带宽来扩大频道容量。没有理由认为400兆赫系统携带多达54个信道最终不会工作;但有充分的理由预计,从未在实际操作条件下用50个或更多通道进行过现场测试的新设备会出现意想不到的不便和昂贵的技术和操作问题。向越来越大的信道承载能力的“马力竞赛”应该被复杂的努力所取代,以提高现有容量的利用效率、所承载信号的技术质量和所传输节目的内容。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Hidden Costs of 400 MHz
The cable television industry (CATV) has experienced the unpleasant consequences of premature application of new technological developments. Expanded channel capacity by means of increased bandwidth is now being promised in many major market franchise proposals. There is no reason to suggest that 400 MHz systems carrying up to 54 channel will not eventually work; but there is good reason to expect unanticipated inconvenient and costly technical and operational problems with new equipment that has never been field tested with 50 or more channels under actual operating conditions. The "horsepower race" toward larger and larger channel carriage capability should be replaced with sophisticated efforts to improve the efficiency of utilization of existing capacity, the technical quality of the signals carried, and the content of the programs transmitted.
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