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摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用
OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受...
摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用
OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受到的由于多
径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和
基本原理，然后在计算机上用M atlal〕对其性能进行了仿真，仿真中将OFDM与传统的单载波
调制方式―i1，交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较，最后分析了一者的仿真结果.
-Abstract: Based on the communication technology train operation control system (CBTC) is a railway signal direction for the development of cross-frequency division multiplexing OFDM) is a wireless environment of high-speed transmission technology, its high-speed train control information transmission Bian be subject to the Due to the spread of multi-path fast fading caused by the impact of a strong resistance to diseases. This paper first introduces the OFDM technology development and the basic principles, and then on the computer〕 M atlal use its performance simulation will OFDM with the traditional single-carrier modulation-i1, cross-amplitude modulation (1frQAM) against multi-path interference of the 10 properties were compared with a final analysis of
- 2022-08-24 10:19:13下载
- 积分：1
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speed up documentation MRPII
速达MRPII文档-speed up documentation MRPII
- 2022-04-29 17:52:05下载
- 积分：1
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DMX512规范学习
dmx512 code for learn
- 2023-08-19 09:35:03下载
- 积分：1
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灵活的GPS导航系统，因为_罪
车载挠性SINS_GPS组合导航系统研究-Flexible SINS_GPS Car Navigation System
- 2022-09-27 20:05:03下载
- 积分：1
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观察自然频率对振动模态的影响（固定阻尼系数），可对有强迫振动项 的情形进行观察，将阻尼系数和自然频率固定，选择一种 的形式，观察 对振动模态的影响。
2、对...
观察自然频率对振动模态的影响（固定阻尼系数），可对有强迫振动项 的情形进行观察，将阻尼系数和自然频率固定，选择一种 的形式，观察 对振动模态的影响。
2、对由方程刻画的单自由度阻尼系统做动画仿真，观察阻尼系数，固有频率以及强迫振动项 对弹簧振动的影响，并和振动曲线图进行对比，写出你的观察结论。
-1、To observe the natural frequency of the vibration mode of (fixed damping coefficient), may have forced vibration of items to observe the situation, the damping coefficient and natural frequency is fixed, choose a form of observation of the impact of vibration mode.
2, characterized by the equation of a single degree of freedom to do animated simulation of damping system to observe the damping coefficient, natural frequency and vibration forced vibration of the impact of spring items, and to compare and vibration curve, write your observations conclusions.
- 2022-02-02 16:13:36下载
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InP_InGaAsPIN红外探测器增透膜的研究
InP_InGaAsPIN红外探测器增透膜的研究-Infrared detector InP_InGaAsPIN antireflection coatings research
- 2022-05-31 05:16:55下载
- 积分：1
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基于ＬＡＢＶＩＥＷ主菜单的设计方法，详细介绍了菜单设计过程...
基于ＬＡＢＶＩＥＷ主菜单的设计方法，详细介绍了菜单设计过程-LABVIEW-based main menu design method, described in detail the design process menu
- 2022-12-12 22:20:03下载
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initial information about sine wave generation
initial information about sine wave generation
- 2022-04-14 14:03:43下载
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< AVR_U盘嵌入式FAT文件系统> 文件介绍了AVR Memory Stick嵌入式中实现类似操作系统的FAT文件管理系统，这些内容主要包括，文...
< AVR_U盘嵌入式FAT文件系统> 文件介绍了AVR Memory Stick嵌入式中实现类似操作系统的FAT文件管理系统，这些内容主要包括，文件系统的命名规范，文件寻址路径规范，文件系统核心数据结构的定义，文件系统读写类函数原型的定义。- document describes embedded AVR Memory Stick to achieve a similar operating system FAT file management systems, which mainly include the file system naming convention, document addressing the path specification, file system core data structure the definition of the file system functions to read and write the definition of the prototype.
- 2022-01-31 07:54:30下载
- 积分：1
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介绍了vhdl设计fpga时仿真和综合的过程，包括软件的应用和一些注意事项，相信会对大家有所帮助...
介绍了vhdl设计fpga时仿真和综合的过程，包括软件的应用和一些注意事项，相信会对大家有所帮助-introduced a VHDL design and simulation when they simply integrated process, including software applications and some attention to matters, we believe it will help
- 2022-03-13 08:38:54下载
- 积分：1
