Generating device and method of constant coefficient matrix in reed-solomon (RS) code of China mobile multimedia broadcasting (CMMB) system
A generation device and constant coefficient technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of large amount of calculation, slow generation of constant coefficient matrix, etc., achieve low calculation amount, easy implementation, and increase generation speed Effect
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[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0016] The calculations in the RS encoder are all done in the Galois field, and the Galois field GF(2 m ) in any element Q can use the basis {1,α,…,α m-1}={γ 0 ,γ 1 ,...,γ m-1}, we call this basis a canonical basis. Usually with {γ 0 ,γ 1 ,..., m-1} to represent GF(2 m ) on the canonical basis. If another set of basis {τ 0 ,τ 1 ,...,τ m-1}Satisfy:
[0017] Tr ( γ i τ j ) = δ ( i , j ) = 1 i = j ...
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