SYSTEM DEVICES AND ALGORITHM FOR THE ERROR CORRECTION IN DIGITAL TRANSMISSIONS WITH BCH CODING/DECODING

摘要

For the error correction in digital transmissions using the so called "BCH" coding/decoding technics, the received data stream is processed by means of a modified version of the algo-rithm of BCH correction, represented by the iterative equations (1), (2) and (3') referred in the present description. The calculation of syndromes and of the error locator polynomial requires only multiplications by a constant factor or by a bit and addition. Hardware implementation is greatly symplified by eliminating the need of a two factor Galois field multiplier.