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New Iterated Decoding Algorithm Based on Differential Frequency Hopping System 被引量:1

New Iterated Decoding Algorithm Based on Differential Frequency Hopping System
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摘要 A new iterated decoding algorithm is proposed for differential frequency hopping (DFH) encoder concatenated with multi-frequency shift-key (MFSK) modulator. According to the character of the frequency hopping (FH) pattern trellis produced by DFH function, maximum a posteriori (MAP) probability theory is applied to realize the iterate decoding of it. Further, the initial conditions for the new iterate algorithm based on MAP algorithm are modified for better performance. Finally, the simulation result compared with that from traditional algorithms shows good anti-interference performance. A new iterated decoding algorithm is proposed for differential frequency hopping (DFH) encoder concatenated with multi-frequency shift-key (MFSK) modulator. According to the character of the frequency hopping (FH) pattern trellis produced by DFH function, maximum a posteriori (MAP) probability theory is applied to realize the iterate decoding of it. Further, the initial conditions for the new iterate algorithm based on MAP algorithm are modified for better performance. Finally, the simulation result compared with that from traditional algorithms shows good anti-interference performance.
出处 《Journal of Beijing Institute of Technology》 EI CAS 2005年第1期27-31,共5页 北京理工大学学报(英文版)
关键词 differential frequency hopping (DFH) maximum a posteriori (MAP) non-coherent detection differential frequency hopping (DFH) maximum a posteriori (MAP) non-coherent detection
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  • 1潘武,学位论文,2000年,28页
  • 2刘有恒,信号检测与估计,1989年,120页

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