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Error Correction in Impulsive Noise Environments by Applying Turbo Codes

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6 Author(s)
Burnic, A. ; Lehrstuhl fur Kommunikations Technik, Duisburg-Essen Univ., Duisburg ; Hessamian-Alinejad, A. ; Scholand, T. ; Faber, T.E.
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In the recent years, iterative ("turbo") processing techniques with soft-in/soft-out components have received considerable attention. Examples are turbo decoding, turbo equalization, and turbo multi-user detection. The authors shall consider the application of turbo-codes to environments with impulsive white noise. Impulsive noise has a nonGaussian nature and is e.g. found in many wireless channels due to impulsive phenomena of radio-frequency interference and also in power line and in digital subscriber line communication systems. A detector/turbo decoder concept, derived from turbo equalization, shall be presented. The illustrated concept avoids numerical instabilities. It shall be shown that turbo-codes facilitate considerable performance improvements over noncoded systems. Furthermore, for benchmarking reasons, the deployment of a conventional rate 1/2 convolutional code with constraint length 5 and octal generators 238,358 will be taken into account

Published in:

Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on

Date of Conference:

11-14 Sept. 2006