Digital data transmission system

摘要

The transmission system has the data to be transmitted within a data stream assigned to individual carrier frequencies, before amplification of specific amplification factors for each carrier frequency and modulation of the carriers with the amplified data. The carrier frequencies are summated and the combined signal is transmitted via a transmission end stage. The combined signal is detected at the reception end and divided into individual modulated carrier frequencies which are demodulated for reconstruction of the transmitted data, compared with the data to be transmitted for modification of the amplification factors.