FIELD: computer-aided control of receiving and transmitting equipment. SUBSTANCE: digital data signals, including coded signals of television programs, are conveyed from transmitter to ground receiver with aid of convolution coding and conversion into first and second signals within different time periods submitting signal at speed 1/2. During different time periods, two signals are combined and punctured into one serial punctured bit stream to obtain look-ahead error-correction convolution-coded signal whose speed can be manually or automatically chosen, say, 2/3 or 6/7. Signals coded in different variable speeds are transmitted during relatively exclusive time moments at first and second energy levels to receiver through satellite. Parallel punctured variable-speed bit streams are obtained simultaneously and at the same time pair of orthogonal media (carriers) (QPSK) is modulated. All optimal punctured codes are processed; for the purpose, use is made of punctured sync pulse generator, multiplexor, reverse LIFO-type register, random-access memory, read-only memory, speed control source. Punctured sync pulse generator functions to produce pair of pulse trains containing serial bits of channels I and Q as well as null bits inserted into serial signal. Receiver responds to QPSK carrier and first yields serial signal having one serial stream of alternating bits of both channels I and Q. Then they are sequentially re-grouped as signals I and Q during same time intervals. EFFECT: improved puncturing method. 21 cl, 5 dwg, 11 tbl
