ITU-R S.482-2 SPANISH-1986 Measurement of performance by means of a signal of a uniform spectrum for systems using frequency-division multiplex telephony in the fixed-satellite service
The CCIR considering:(a) that it is desirable to measure the performance of satellite links in the fixed-satellite service for frequency-division multiplex telephony under conditions closely approaching those of actual operation;(b) that a signal with a continuous uniform spectrum (white noise) has statistical properties similar to those of a multiplex signal when the number of channels is not too small;(c) that the use of a signal with a continuous uniform spectrum to measure the performance of such links is already widespread;(d) that it is necessary to standardize the frequencies and bandwidths of the measuring channels to be used for such measurements;(e) that for reasons of international compatibility it is necessary to standardize the minimum attenuation and the bandwidth of the stop filters which may have to be used in the white-noise generator;(f) that the CCITT has indicated, for the planning of telephone circuits, a mean value of speech power in the baseband of a multiplex telephone system to be taken into consideration during the busy hour (CCITT Recommendation G.223,Vol,III-2).
ITU-R S.482-2 SPANISH-1986 Referenced Document
ITU-T G.228 MEASUREMENT OF CIRCUIT NOISE IN CABLE SYSTEMS USING A UNIFORM - SPECTRUM RANDOM NOISE LOADING*， 1993-01-01 Update
ITU-T G.230 MEASURING METHODS FOR NOISE PRODUCED BY MODULATING EQUIPMENT AND THROUGH-CONNECTION FILTERS*， 1993-01-01 Update
ITU-R S.482-2 SPANISH-1986 history
1986ITU-R S.482-2 FRENCH-1986 Measurement of performance by means of a signal of a uniform spectrum for systems using frequency-division multiplex telephony in the fixed-satellite service