FIELD: channel coding for communication systems. SUBSTANCE: channel coding device has bit input unit designed for inputting known bits in input data stream at desired locations; channel coder functions to encode data bit stream including introduction of bits for generating coded characters; matching unit functions to match coded character transmission speed with desired channel character transmission speed. Channel multiplier is used to multiply channel characters with matched transmission speed. Transmission speed matching unit has erasing unit for erasing inputted bits included in coded bits in case transmission speed of coded characters is higher than desired channel character transmission speed. Transmission speed matching unit has coded characters translator intended to translate coded characters for matching transmission speed of the latter with desired channel character transmission speed in case coded character transmission speed is below desired channel character transmission speed. EFFECT: minimized performance degradation. 38 cl, 16 dwg
