Error Estimation in Reed Solomon Decoder A polynomial coefficient calculator

摘要

The present invention relates to an apparatus for calculating a coefficient of an error evaluation polynomial in a Reed Solomon decoder,_i) And the coefficient of the error location polynomial ( _i) And a Galois field multiplier 10 and a Galois field multiplier 10 or an externally input error locator polynomial coefficient RTI ID = 0.0 _iA multiplexer 30 for selectively outputting the multiplexed data; The value output from the multiplexer 30 is shifted and input to the Galois field adder 20 as an intermediate value and the coefficient of the error evaluation polynomial ( _iAnd the shift register unit 40 that outputs the result of the multiplication and demultiplexing of the error evaluation polynomial to the local oscillator 40. Since the coefficient calculation apparatus of the error evaluation polynomial is implemented without using the multiple ventilator and demultiplexer, (VLSI).