RADIO DATA TRANSMISSION SYSTEM

摘要

The invention is a radio transmission system using multi-value amplitude modulation. The invention aims at realizing with a simple circuit fine and stable switching control for the control mode of a transversal type automatic equalizer used in the transmission system. Another aim is the reduction of the hysteresis of distortion resistance frequency characteristic. In the transmitter the n-bit data is converted to a multi-value signal. In the receiver, the multi-value signals obtained by detecting and modulating the received signal is discriminated and converted to m bits more than the original n-bit data. The m bits can be used to generate pseudo error pulses the generating frequency of which determines the control mode switched.