Title :
A method for intermodulation noise calculations in a cable television network with HD-MAC, PAL and FM radio signals
Author :
Joshi, Richa ; Arnbak, Jens C. ; Prasad, Ramjee
Author_Institution :
Delft Univ. of Technol., Netherlands
fDate :
9/1/1992 12:00:00 AM
Abstract :
A statistical method for calculating intermodulation noise in CATV systems whose traffic can be characterized as a sum of a large number of independent signals is presented. The method is demonstrated by calculating the signal-to-intermodulation-noise ratio in the various channels of a prototype cable network supporting HD-MAC, PAL, and FM radio signals. The spectra of these individual signals are simplified in order to perform part of the calculation analytically. It is shown that the signal-to-intermodulation-noise ratio decreases when the total signal power is increased. This method can be used to calculate the necessary back-off of a cable network for a given frequency plan and to determine suitable plans for loading and controlling CATV networks
Keywords :
cable television; intermodulation; noise; statistical analysis; CATV networks; FM radio; HD-MAC; PAL; cable back-off; cable television network; frequency plan; independent signals; intermodulation noise calculations; signal-to-intermodulation-noise ratio; statistical method; total signal power; Cable TV; Frequency; HDTV; Intelligent networks; Noise generators; Prototypes; Satellite broadcasting; Signal to noise ratio; Statistical analysis; TV receivers;
Journal_Title :
Broadcasting, IEEE Transactions on
