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Importance sampling for loop-free decoding trees with application to low-density parity-check codes

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2 Author(s)
Bo Xia ; Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA ; Ryan, W.E.

An importance sampling scheme for the decoding of loop-free decoding trees is proposed. It is shown that this scheme is asymptotically efficient and that, for an arbitrary tree and a given estimation precision, the number of simulation runs needed is inversely proportional to the standard deviation of the channel noise. This work has its application to the decoding of low-density parity-check codes.

Published in:

Information Theory, 2003. Proceedings. IEEE International Symposium on

Date of Conference:

29 June-4 July 2003