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前缀特性
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     SISO MMSE TURBO equalization algorithm is applied to equalizing section, and the characteristics of OFDM's cyclic prefix reduce the complexity of equalization further.
     均衡器采用SISO MMSE TURBO均衡算法,并利用OFDM系统的循环前缀特性进一步降低算法复杂度。
  相似匹配句对
     PROPERTIES OF BIPOLARONS
     双极化子的特性
短句来源
     Channel Characteristics;
     信道特性 ;
短句来源
     2) Prefix 'ke-' 圪;
     二,前缀“圪”;
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  prefix property
The parsing algorithm developed for left context precedence languages works with linear time and has the viable prefix property which is a stronger property than the correct prefix property.
      
The paper describes a transformation which converts SLR(1) grammars to grammars which are (1, 0) or (1, 1) mixed strategy precedence grammars and which have the correct prefix property.
      
The minimized cubes are encoded using a code set which satisfies the prefix property.
      
It is shown that for certain classes of languages, if a language in the class has the prefix property, then it is a regular set.
      
We give a necessary and sufficient condition for a language with the prefix property of R.V.
      
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>=In this paper, a space-time block-coded OFDM system has been researched, turbo equalization is applied to the system, and its decoding algorithm and equalization algorithm has been discussed. The system is channel coded by turbo code, its SISO MAP decoding algorithm is inferred by simply modifying the BCJR algorithm; SISO MMSE TURBO equalization algorithm is applied to equalizing section, and the characteristics of OFDM's cyclic prefix reduce the complexity of equalization further. The system performance has...

>=In this paper, a space-time block-coded OFDM system has been researched, turbo equalization is applied to the system, and its decoding algorithm and equalization algorithm has been discussed. The system is channel coded by turbo code, its SISO MAP decoding algorithm is inferred by simply modifying the BCJR algorithm; SISO MMSE TURBO equalization algorithm is applied to equalizing section, and the characteristics of OFDM's cyclic prefix reduce the complexity of equalization further. The system performance has been analyzed by computer simulation, the simulation results show that a space-time block-coded OFDM system with turbo equalization performs much better than a OFDM system without being space-time block-coded or turbo equalized.

研究了空时分块编码的OFDM系统,对系统进行了TURBO均衡,并讨论了此时系统的译码算法和均衡算法。系统信道编码采用Turbo码,通过对BCJR算法作简单的修改得到SISO MAP译码算法; 均衡器采用SISO MMSE TURBO均衡算法,并利用OFDM系统的循环前缀特性进一步降低算法复杂度。通过仿真对系统性能进行了比较分析,仿真结果表明,采用迭代均衡的空时分块编码OFDM系统性能要明显优于未空时编码和未迭代均衡的OFDM系统。

 
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