CAJ | 학술논문

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．
침대여하증가MIMO—OFDM계통수거전수속솔적문제，본문연구료MIMO—OFDM계통중사충전형적자괄응산법，병통과MATLAB방진연건평태，대저사충자괄응산법적성능진행비교분석，득출상응수거급결론．연구표명，재저사충산법중，자괄응문한산법능분배도교다적비특수，차분배도고비특수정황적차수교다．령외환가간출，해산법능보증총발사공솔흡여기분지운용도매개자재파상，이불시유우평균분배사득모사공솔인불괄당적운용이피낭비．
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.