Description: Rules of construction of cyclic codes for coding of the messages transferred to a user over communication channels are analysed and specified. The way of construction of parity-check matrixes for construction of algorithms of coding of the transferred message and decoding of the accepted message is offered. Possibility of sampling of code combinations for coding of messages with a desirable signal distance is shown. Instances of construction of cyclic codes of even and odd frequency rate, and also algorithms of coding transferred and decoding of accepted code combinations are observed.
Keywords: the data transmission equipment, a cyclic code, a regular code, a syndrome, a signal distance, the coder, the decoder