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MIMO-OFDM系统空时分组编码性能仿真与分析

Performance Analysis and Simulation of Space Time Codes for MIMO-OFDM Systems
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摘要 正交频分复用(OFDM)和多输入多输出(MIMO)技术是解决未来宽带无线通信系统中多径衰落信道和带宽效率两大技术难点的关键技术。分析了MIMO系统模型和空时分组码(SBTC)的编解码原理,建立了基于SBTC的MIMO-OFDM的系统模型,并对其性能进行了仿真分析。仿真结果表明,空时编码与MIMO-OFDM的结合,能够充分利用空域、频域、时域分集,有效地改善系统性能。 OFDM （Orthogonal Frequency Division Multiplexing） and MIMO （Multiple-Input- Multiple-Output） are two key techniques that can be used to solve the bandwidth efficiency and muhipath fading channel problems in future broadband wireless communication system. MIMO system scheme and space-time coding is analyzed. With an established MIMO-OFDM system model based on space time coding, its performance is simulated and analyzed. Simulations shows that combining space-time coding with MIMO-OFDM system, which make full use of space diversity, frequency diversity and time diversity can be effectively applied to improve system performance.
作者 钱志文
机构地区 江苏理工学院电气信息工程学院
出处 《江苏技术师范学院学报》 2013年第2期29-33,44,共6页 Journal of Jiangsu Teachers University of Technology
关键词 多输入多输出 正交频分复用 空时分组编码 最大似然解码 MIMO OFDM space time coding maximum likelihood decode
分类号 TP391.9 [自动化与计算机技术—计算机应用技术] TN919.3 [电子电信—通信与信息系统]
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江苏技术师范学院学报
2013年 第2期

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