R&D Report 1963-14 : Television co-channel interference: Some effects of the modulation of the interfering signal. E.W. Taylor The configuration of the interference pattern produced when a television transmission suffers co-channel interference from another television signal is examined in detail, in order to determine the process by which the interfering modulation gives rise to additional patterns. The description of these patterns in terms of the carriers and side-bands of the two...
Topics: interfering, frequency, pattern, signal, wanted, sideband, subsidiary, sidebands, principal,...
R&D Report 1968-43 : Calculation of the field strength required for a television service, in the presence of co-channel interfering signals. Part 2: Effect of multiple interfering sources E. Sofaer With the great expansion in television services in Europe and elsewhere, several transmitting stations will be operating in the same frequency channel. To any one service all transmitters sharing the channel are sources of interference, and it is therefore necessary that some method of estimating...
Topics: probability, deviation, location, signal, standard, field, interference, protection, strength,...
R&D Report 1968-47 : The subjective assessment of multiple co-channel television interference A. Brown The increase in protection ratio required by a number of simultaneous constant-level interfering signals, compared with the ratio required for a single interfering signal is considered. The results of some subjective tests are presented, and formulae are deduced to enable the additional protection ratio to be calculated, for related and unrelated types of interference
Topics: interferences, interfering, subjective, addition, signals, unrelated, impairment, interference,...
R&D Report 1970-11 : Combined effect of several interfering signals J.W. Head When a site is considered for a new radio or television transmitter the best available assessment of interference expected from existing transmitters operating on or near the same frequency is required. This involves calculation of the combined effect of two or more interfering signals simultaneously present. The information available about each interfering signal is its distribution in time, that is, the...
Topics: signals, signal, distribution, quantized, correlation, probability, resultant, interfering,...
