| 摘要 |
FIELD: multichannel communication systems. SUBSTANCE: the general principle of multiplexing of several (n) input signals at data transmission is as follows. Input signals are subjected to a certain conversion and replaced by a single resultant signal. This signal is transmitted over one communication channel. At the output the arrived signal is subjected to inversion, as a result, n input signals are obtained with a preset accuracy. According to this principle, in case of frequency multiplexing the spectra of input signals are transferred upwards in frequency and get summed up so that a single resultant signal is obtained. At the output separate converted signals are discriminated by means of filtration, and source input signals are discriminated by means of their detection. The following is meant under amplitude multiplexing of signals: (1) replacement according to a definite rule of amplitudes of several input signals at one and the same time moment with one amplitude of the resultant signal at the same time moment; (2) possibility to restore at the respective time moment the amplitude of source signals with a certain accuracy by means of a certain inversion. The offered method differs from the known one by utilization of direct diophant conversion of amplitudes of several (n) multiplexed signals at each time moment as direct conversion of signals, and diophant inversion of amplitudes at each time moment - as inversion of signals. Practically direct diophant conversion can be accomplished by different methods. For example, the amplitude of one of the signals is increased in succession with step I by value nT, where T is one of the incommensurable periods of utilized diophant conversions, n is the natural number. Realization of diophant inversion - production of signals at the outputs of periodic converters with incommensurable periods is accomplished by conversion of the resultant signal by one of the periodic converters with incommensurable periods. EFFECT: effective use for multiplexing of data in the form of pulsing signals; in computer medium. |
