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A new treatment of priority-first search maximum-likelihood soft-decision decoding of linear block codes

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1 Author(s)
Han, Y.S. ; Dept. of Comput. Sci. & Inf. Eng., Nat. Chi Nan Univ., Taiwan

In this correspondence we present a new method to convert the maximum-likelihood soft-decision decoding problem for linear block codes into a graph search problem where the generalized Dijkstra's algorithm can still be applied to the decoding procedure. The cost assigned to every branch in the graph is based on a generalization of the Wagner rule which is an equivalent form of the maximum-likelihood decoding rule. The new decoding algorithm uses the properties of error patterns to reduce the search space

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Information Theory, IEEE Transactions on  (Volume:44 ,  Issue: 7 )