فعالية نظم ارسال المعلومات الرقمية

The accuracy of transmitting and receiving information could evaluate the communication-systems-goodness. Up till now, there is no singular standardization method to compare such systems, which have noises-residency-characteristics-effectiveness, economical, engineering parameters and the probability of defects of noises-to-signal ratio relation. Digital communication effectiveness-systems could essentially be developed using more modernized methods and allowing the use of better communication channel power. But we can develop that accuracy without increasing the noise-to-signal-ratio by using the power-frequency-parameters. This requires knowing the relation between those parameters, with defects probability, using the phase-frequency modulator. This method enables us to compare these two systems at increasing the numbers of signals location