Performances Analysis of Serial Concatenated codes based on BCH and LDPC Codes using Berlekamp- massey and sum-product algorithms
نویسنده
چکیده
In this paper, a decoding technique for the concatenated codes based on the Bose-Chaudhuri-Hocquenghem code (BCH) and the low density parity check (LDPC) is proposed. It is based on the berlekamp-massey and sum-product algorithms. The output values delivered by the sum-product algorithm, after a fixed number of iterations, are used as input values to perform Berlekamp-massey decoding. The proposed approach present high performance and reduce the Bit Error Rate (BER). Several examples of simulation are tested by the widely used Additive White Gaussian Noise (AWGN) model and Binary Phase shift Keying (BPSK) modulation. Finally, this solution is validated by the 64x64 grayscale Lena image. The obtained results provide significantly improved system performances in term of Peak Signal to Noise Ratio (PSNR).
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Decoding Procedure for BCH, Alternant and Goppa Codes defined over Semigroup Ring
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