Coding method, decoding method, error correction method and device
An encoding method and technology for an error correction device are applied in the fields of encoding methods, error correction methods and devices, and decoding methods, and can solve the problems of high computational complexity and low computational efficiency.
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[0069] The RS code is a multivariate cyclic shift (BCH) code, defined in Galois (Galois) finite field GF(2 m ), m is the number of bits in a binary sequence contained in a symbol. The RS code that corrects 1 symbol error can be expressed as RS(n,k), where: n represents the codeword length, n=2 m -1; k means information length k=n-2t; check code length 2t=n-k, 1 symbol contains t-bit data.
[0070] Generally speaking, before digital information is sent, an RS encoding circuit is used to encode the information code, and the received RS encoded data is decoded and error-corrected by a corresponding RS decoding circuit at the receiving side.
[0071] At present, the commonly used RS encoders include k-level encoders and n-k-level encoders. Among them, in the encoding process of the n-k level encoder, the generator polynomial g(x) needs to be used. The existing n-k level encoder adopts the g(x) multiplication circuit encoder or division circuit encoder, and the information group ...
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