Efficient frame structure for digital satellite communication

摘要

A frame format is proposed, comprising: a plurality of frames, each frame having a fixed number of modulated symbols, regardless of a modulation type of the system, and each frame comprising a unique word at a predetermined position; wherein a spacing, in number of symbols, between any two consecutive unique words is identical, regardless of the modulation type. A digital communications transmitter, receiver and system are also disclosed, wherein a digital signal has the frame format.