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MMSE Turbo Equalization with Partial Prior Information

ZHANG Lei1,CHENG Haichuan2,CHENG Yuxin1,JANG Wei1,XIANG Haige11.Department of Electronics,School of Electronics Engineering and Computer Science,Peking University,Beijing 100871;2.Journal of Army Aviation Institute,Beijing 101123  
In order to improve the performance of the MMSE(minimum mean squared error) turbo equalizer further,the MMSE turbo equalization with partial prior information is proposed.The partial prior information equals to the sum of the whole extrinsic information and the partial prior information of the MAP(maximum a posteriori probability) decoder.The simulation results show that the performance of the MMSE turbo equalizer with partial prior information is much better than the performance of the conventional MMSE turbo equalization and is very close to the performance of the MAP turbo equalizer which is the optimal turbo equalizer for minimizing the bit error rate(BER) and the frame error rate(FER).
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