Covariance Evolution for Spatially "Mt. Fuji" Coupled LDPC Codes

04/10/2019

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by   Yuta Nakahara, et al.

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A spatially "Mt. Fuji" coupled low-density parity check ensemble is a modified version of the original spatially coupled low-density parity check ensemble. It is known that it has almost the same decoding error probability as and require less number of iterations than the original ensemble in the water-fall region if we appropriately choose a parameter α. In this paper, we introduce initial conditions of covariance evolution for the spatially "Mt. Fuji" coupled low-density parity check ensemble. Then, we analyze the water-fall performance.