THRESHOLD DECODER OF CONVOLUTION CODE Russian patent published in 1994 - IPC

FIELD: communication, computer engineering. SUBSTANCE: threshold decoder is inserted with OR gates 8, 13, unit 19 of multiplication by weight coefficient, solution circuit 7, former 6 of checks, threshold counter 16, threshold element 9. It also has coders 1,10, error corrector 4, modulo two adders 2,11, OR gates 12,18; syndrome former 3, clock pulse generator 14, time interval former 17, element 15. With insertion of new elements and couplings new discipline of functioning of threshold decoder of convolution code is realized consisting in taking decision on value of noise symbol performed on basis of flexible solutions across threshold element. In addition correction of correction signal from output of threshold element is conducted due to determination of value of noise symbol which enables most of thrice-repeated errors to be corrected in the aggregate. EFFECT: enhanced authenticity of decoding due to correction of most of thrice-repeated errors. 2 dwg, 1 tbl