• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2014, Vol. 36 ›› Issue (09): 1668-1671.

• 论文 • 上一篇    下一篇

一种测度MIMO-OFDM系统总体资源效率的方法

刘金铸1,王蒙2   

  1. (1.南京信息工程大学电子与信息工程学院,江苏 南京 210044;2.南京信息工程大学信息与控制学院,江苏 南京 210044)
  • 收稿日期:2013-02-17 修回日期:2013-05-17 出版日期:2014-09-25 发布日期:2014-09-25

A method of measuring the overall resource
efficiency of the MIMO-OFDM system

LIU Jinzhu1,WANG Meng2   

  1. (1.College of Electronic and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044;
    2.College of Information and Control,Nanjing University of Information Science and Technology,Nanjing 210044,China)
  • Received:2013-02-17 Revised:2013-05-17 Online:2014-09-25 Published:2014-09-25

摘要:

在定义归一化带宽和归一化信噪比,并构建需求平面模型的基础上,提出了一种测度数字调制系统总体资源效率的方法,对多天线正交频分复用(MIMOOFDM)系统进行了分析,得出MIMOOFDM系统在不同的检测算法、不同调制方式下的总体资源效率。主要结论为:MIMOOFDM系统在最大似然检测算法下是最优的,其总体资源效率相对较高;基于正交振幅调制的总体资源效率高于基于多进制相移键控调制的,同时它的整体资源效率伴随着M的增加而提高。

关键词: MIMO-OFDM, 归一化, 误码率, 带宽效率, 总体资源效率

Abstract:

The concepts of the normalized bandwidth and the normalized signal-to-noise ratio are defined, which are used to construct the plane model. Based on the model, a method of measuring the overall resource efficiency of the MIMOOFDM system is proposed. This method obtains the overall resource efficiency of the MIMO-OFDM system under different detection algorithms and different modulation. The main conclusion is that the MIMO-OFDM system with the maximum likelihood detection algorithm has the relatively high overall resource efficiency, and using Mary quadrature amplitude modulation (MQAM) has higher overall resource efficiency than employing Mary phase shift keying (MPSK) while its overall resources efficiency improves with the increase of M.

Key words: MIMO-OFDM;normalization;bit error rate;bandwidth efficiency;overall resource efficiency