APPARATUS FOR ITERATIVE DECODING OF BLOCK TURBO CODES AND SISO DECODER FOR REALISING SAID METHOD Russian patent published in 2014 - IPC H03M13/00 

FIELD: radio engineering, communication.

SUBSTANCE: apparatus for decoding block turbo codes has a first random-access memory unit 1, a second random-access memory unit 2, a third random-access memory unit 3, a SISO decoder 4, a decision unit 5, a first limiter 6, a read-only memory unit 7, a multiplier unit 8, a second limiter 9. The SISO decoder has a random-access memory unit 10, a clock generator 11, a switch 12, a counter 13, a read-only memory unit 14, a Walsh function coefficient signal former 15, an analysed sequence former 16, a first adder 17, a first subtractor unit 18, a doubling unit 19, a multiplier unit 20, a first divider unit 21, a second adder 22, a third adder 23, a second subtractor unit 24, a second divider unit 25, a third divider unit 26, a limiter 27.

EFFECT: high noise immunity of block turbo codes.

3 cl, 6 dwg