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Polar Codes with Dynamic Frozen Symbols and Their Decoding by Directed Search (1307.2352v2)
Published 9 Jul 2013 in cs.IT and math.IT
Abstract: A novel construction of polar codes with dynamic frozen symbols is proposed. The proposed codes are subcodes of extended BCH codes, which ensure sufficiently high minimum distance. Furthermore, a decoding algorithm is proposed, which employs estimates of the not-yet-processed bit channel error probabilities to perform directed search in code tree, reducing thus the total number of iterations.