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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
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游戏扫描板电路原理图,核心芯片HA11235,街机的专用显示板
游戏扫描板电路原理图,核心芯片HA11235,街机的专用显示板-games plate scanning circuit diagram, and the core chip HA11235, arcade dedicated display
- 2022-03-04 14:59:44下载
- 积分:1
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This article describes a CPLD [1] as the core, VHDL [2] for the development of t...
本文介绍一种以CPLD[1]为核心、以VHDL[2]为开发工具的时间控制器,该控制器不仅具有时间功能,而且具有定时器功能,能在00:00~23:59之间任意设定开启时间和关闭时间,其设置方便、灵活,广泛应用于路灯、广告灯箱、霓虹灯等处的定时控制。-This article describes a CPLD [1] as the core, VHDL [2] for the development of tools for time controller that features not only has the time, but with the timer function, can be between 00:00 ~ 23:59 arbitrarily set to open time and closing time, and its convenient, flexible, widely used in street lamps, advertising light boxes, neon lights, etc. The timing control.
- 2022-02-01 10:40:29下载
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LPC2378的SCH和PCB设计
LPC2378 protel sch and PCB
- 2022-01-21 21:01:22下载
- 积分:1
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本人在C#下SAFE编程,如何在.net 环境下控制硬件设备通讯,涉及I/O卡、COM通信...
本人在C#下SAFE编程,如何在.net 环境下控制硬件设备通讯,涉及I/O卡、COM通信-I C# Under the SAFE program, how to. Net environmental under the control hardware device communications, involving I/O card, COM communication
- 2023-02-05 15:35:04下载
- 积分:1
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毕业设计论文,基于VC的Modbus通讯实现,用的是第三方通信类,实现了以个主机的通信界面,代码另附...
毕业设计论文,基于VC的Modbus通讯实现,用的是第三方通信类,实现了以个主机的通信界面,代码另附-Graduation thesis, based on VC Modbus communication to achieve, using third-party communications, implemented with a host of communication interfaces, the code attached
- 2022-02-21 04:56:13下载
- 积分:1
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Taxi billing system can be changed by modifying the data on prices and start cha...
出租车计费系统,可通过修改数据改变计费价格及起步里程.-Taxi billing system can be changed by modifying the data on prices and start charging mileage.
- 2022-04-26 16:28:19下载
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基于Multigen 的虚拟地质环境构建技术探讨
基于Multigen 的虚拟地质环境构建技术探讨-Based on the geological environment of virtual Multigen Construction Technology
- 2023-04-24 07:40:04下载
- 积分:1
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非常实用的LINUX使用心得,吐血推荐ING
非常实用的LINUX使用心得,吐血推荐ING-LINUX very practical use of knowledge, hematemesis Recommended ING
- 2023-04-27 19:00:04下载
- 积分:1
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一种基于软件无线电的数字中频和基带处理平台
一种基于软件无线电的数字中频和基带处理平台-A software-based radio digital IF and baseband processor platform
- 2022-02-21 13:07:16下载
- 积分:1