Turbo Code has been claimed as an error correction code that achieves Shannon limit. It has been proposed in many communication systems standards. Performance of Turbo Code under different channel condition is a key factor that should be considered because of requirements of applications. In this paper, we introduced the theory of Turbo Code including a practical Turbo Decoding algorithm - Log-MAP algorithm; we simulated and analyzed the Turbo Code with Log-MAP algorithm under AWGN and fading channels using the open source simulation tool - SCILAB.
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