High order coding method for digital information transmission

摘要

The coding method involves using several coding stages with different pulse durations represented by different numbers of periods and half periods of an AC signal. There are continuous pulses transmitted as a single non-stop sequence. The individual pulse durations are marked in the transmitted non-stop sequence by changes in amplitude. The coded information can be divided into two sequences which are offset in phase by 90 degrees from one another, or which are used for modulation of two carriers offset from one another by 90 degrees.