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Performance analysis of Turbo-Codes in communication channels with impulsive noise
Authors:Li Chong  Deng Weibo  Duan Lingjie
Affiliation:Dept. of Electrical and Information, Harbin Inst. of Technology, Harbin 150001, P. R. China
Abstract:Performance of Turbo-Codes in communication channels with impulsive noise is analyzed. First, mathematical model of impulsive noise is presented because it has non-Gaussian nature and is found in many wireless channels due to impulsive phenomena of radio-frequency interference. Then, with linear Log-MAP decoding algorithm for its low complexity, Turbo-Codes are adopted and analyzed in such communication channels. To confirm the performance of the proposed method, simulations on both static and fully interleaved fiat Rayleigh fading channels with impulsive noise have been carried out. It is shown that Turbo-Codes have a better performance than the conventional methods (e.g. convolutionally coded system).
Keywords:Turbo-Codes  impulsive noise  Log-MAP  Gaussian mixture distribution  universal nobile telecommu-nications system.
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