空间复用MIMO系统总体资源效率测度  

Overall Resource Efficiency Measure of Spatial Multiplexing MIMO System

作　　者：张蕾[1] 刘金铸[2] 

机构地区：[1]南京信息工程大学信息与控制学院,南京210044 [2]南京信息工程大学电子与信息工程学院,南京210044

出　　处：《数据采集与处理》2013年第6期796-800,共5页Journal of Data Acquisition and Processing

基　　金：江苏省科技支撑计划(工业)基金(BE2011298)资助项目

摘　　要：通过定义归一化带宽和归一化信噪比构建需求平面,提出基于带宽效率与能量需求的总体资源效率测度方法,将该方法应用于多输入多输出(Multiple-input multiple-output,MIMO)系统,分析MIMO系统在不同收发天线数目,不同调制方式以及不同检测算法下的总体资源效率,得出结论:MIMO系统比传统的单输入单输出(Singleinput single-output,SISO)系统总体资源效率高;当发射天线数目固定,MIMO系统总体资源效率随着接收天线数目的增加而增加;采用正交振幅调制(Mary quadrature amplitude modulation,MQAM)的总体资源效率要高于采用多进制相移键控(Mary phase shift keying,MPSK),而且其总体资源效率随着M的增大而提高;最大似然检测(Maximum likelihood detection,MLD)是最优的检测算法,其总体资源效率相对较高。上述结论证实该算法的可靠性,为总体资源效率测度算法应用于其他系统以及新检测算法的构建提供了重要依据。The resource requirement plane is built by the normalized bandwidth requirement and normalized signal to noise ratio, and overall resource efficiency measure method is put forward based on the bandwidth efficiency and energy requirement. The method is applied to the multi- pie-input multiple-output （MIMO） system, and the overall resource efficiency of the MIMO system is analyzed under different numbers of transmit and receive antennas, different modula- tion and detection algorithms. Therefore, the conclusions are drawn that MIMO system has the higher overall resource efficiency than the traditional single-input single-output （SISO） sys- tem; When the number of transmit antennas is fixed, the resource efficiency of the MIMO sys- tem increases with the increase of the number of receiving antenna; The overall resource effi- ciency by mary quadrature amplitude modulation （MQAM） is higher than that by Mary phase shift keying （MPSK）, and the overall resource efficiency improves with the increase of M; Maximum likelihood detection （MLD） is the optimal detection algorithm, whose overall re- source efficiency is relatively high. The above conclusions verify the validity of the algorithm, which provides an important basis for the overall resource efficiency measure applied to other systems as well as other new detection algorithms.

关 键 词：带宽效率 多输入多输出 总体资源效率 误比特率 

分 类 号：TN914.3[电子电信—通信与信息系统]