FIELD: physics; communications.
SUBSTANCE: invention relates to transmission and reception devices which correct data errors in a communication channel. In the transmission device, the unit for adding redundancy bits adds the redundancy bit to each bit of data received using a single bid divider; and a multiplier executes multiplication. The transmission device transmits a frequency modulated (FM) signal modulated by a frequency modulation unit. In the reception device, a character recognition unit recognises the character at the Nyquist point for the signal which is demodulated by the unit for demodulating the FM-signal; a bit conversion unit converts bits in accordance with the character recognition result; and a frame reconstruction unit removes the redundancy bit, added by the unit for adding redundancy bits of the transmission device, from the bit string deinterleaved by a deinterleaver.
EFFECT: correction of errors using simple configuration, even during communication in an unfavourable medium.
15 cl, 8 dwg
