CONVOLUTION CODER Russian patent published in 1995 - IPC

FIELD: electrical communications. SUBSTANCE: convolution coder having first read-only storage unit, first delay element, first adder, second adder, second read-only storage unit, second delay element, first multiplier, third adder, fourth adder, third delay element, second multiplier, fourth delay element, fifth adder, and fifth delay element is provided, in addition, with inverters, sixth adder, and sixth delay element. EFFECT: improved noise immunity of signal train shaped by coder in channels with carrier wave phase jump multiple of 90 degrees due to increasing free space between convolutionally coded signal trains. 4 dwg, 1 tbl