A Harmonically Related Carrier System for Cable Television
- 1 January 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Communications
- Vol. 23 (1) , 155-166
- https://doi.org/10.1109/tcom.1975.1092670
Abstract
A system of harmonically related visual carriers has many advantages for transmission in broad-band cable systems. All intermodulation products fall "zero-beat" with desired carriers and their visible effect is therefore drastically reduced. Prudent control of the relative phase of these harmonic carriers allows reduction in the peak-to-peak amplitude of the superposed carriers with consequent reduction of distortion in the system amplifiers. The system has been used for more than a year to provide 14 000 subscribers with 21 channels of television service.Keywords
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