| MIMO—OFDM系统自适应算法的比较与分析 |
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| 引用本文： | 宁宁,宁敏东.MIMO—OFDM系统自适应算法的比较与分析[J].洛阳师范学院学报,2014(8):40-44. |
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| 作者姓名： | 宁宁 宁敏东 |
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| 作者单位： | 洛阳师范学院物理与电子信息学院,河南洛阳471022 |
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| 摘 要： | 针对如何增加MIMO—OFDM系统数据传输速率的问题，本文研究了MIMO—OFDM系统中四种典型的自适应算法，并通过MATLAB仿真软件平台，对这四种自适应算法的性能进行比较分析，得出相应数据及结论．研究表明，在这四种算法中，自适应门限算法能分配到较多的比特数，且分配到高比特数情况的次数较多．另外还可看出，该算法能保证总发射功率恰如其分地运用到每个子载波上，而不是由于平均分配使得某些功率因不适当的运用而被浪费．
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| 关 键 词： | MIMO—OFDM 自适应算法 比特分配 功率分配 |
Adaptive Algorithm Comparison and Analysis of MIMO-OFDM Systems |
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| NING Ning,NING Min-dong.Adaptive Algorithm Comparison and Analysis of MIMO-OFDM Systems[J].Journal of Luoyang Teachers College,2014(8):40-44. |
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| Authors: | NING Ning NING Min-dong |
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| Institution: | (College of Physics and Electronics Information, Luoyang Normal University, Luoyang 471022, China) |
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| Abstract: | In view of how to increase data transfer rate of MIMO-OFDM systems, this paper studies four kinds of typical adaptive algorithm of MIMO-OFDM systems, compares and analyzes the performances of these algorithms through MATLAB simulation to obtain the corresponding data and results. This study shows that the adaptive threshold algorithm can be allocated a larger number of bits and has more chances of being allocated larger numbers of bits among the four kinds of algorithms. In addition, this algorithm can guarantee the total transmission power appropriately applied to each sub-carrier, rather than average distribution of some power being wasted because of improper uses. |
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| Keywords: | MIMO-OFDM adaptive modulation power allocation bit allocation |
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