-
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
-
一款基于Cypress触摸按键设计的产品，真实的产品设计方案和软件功能流程图...
一款基于Cypress触摸按键设计的产品，真实的产品设计方案和软件功能流程图-Cypress touch a button on the design of products, the real product design programs and software flow chart
- 2023-03-07 11:55:03下载
- 积分：1
-
< 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
-
另一个AVR核心porocesssor VHDL源代码
another avr core porocesssor vhdl source code
- 2022-04-07 00:20:37下载
- 积分：1
-
QT2410开发板全部电路图，对做嵌入式硬件设计的朋友会有一定的参考价值。...
QT2410开发板全部电路图，对做嵌入式硬件设计的朋友会有一定的参考价值。-Schematics for QT2410 development board, would be a good reference for those who makes hardware design on embedded system.
- 2022-07-21 12:06:49下载
- 积分：1
-
数控直流稳压电源源程序 本设计由两个电路模块构成：直流稳压源电路（+15V,+5V,...
数控直流稳压电源源程序 本设计由两个电路模块构成：直流稳压源电路（+15V,+5V,-15V），程控电路。并且巧妙得反置使用D/A变换器。使程控输出电压0-9.9手动可调，步距为0.2V。并可预置电压值，采用LED同步显示。-NC DC power source circuit of the design of two modules: the source DC circuit (+15 V,+5 V,-15V), program-controlled circuit. And clever use of a reversal of D/A converter. So that the output voltage programmed manually adjustable 0-9.9, step to 0.2V. And preset voltage value, shows that the use of LED synchronization.
- 2022-01-26 02:34:33下载
- 积分：1
-
基于X3D／VRML的三维场景设计与实现,介绍的比较详细.适合学习X3D和VRML...
基于X3D／VRML的三维场景设计与实现,介绍的比较详细.适合学习X3D和VRML-Based on the three-dimensional scenes X3D/VRML design and realization of a more detailed introduction. For learning X3D and VRML
- 2022-11-12 02:55:03下载
- 积分：1
-
Home central air
家用中央空调设计规范家用中央空调设计规范家用中央空调设计规范
- 2022-07-21 06:32:12下载
- 积分：1
-
哈希表的实现问题描述设计到系统的地址…
问题描述
设计散列表实现通讯录查找系统，使得平均查找长度不超过2，完成相应的建表和查表程序。
-Hash table implementation to describe the design problem to find the system address book, bringing the average search length of no more than 2 to complete the construction of the corresponding table and look-up table procedures.
- 2022-09-10 09:35:03下载
- 积分：1
-
电容式触摸ic1080实验板资料，由厂方提供。
电容式触摸ic1080实验板资料，由厂方提供。-Capacitive touch panels ic1080 experimental data, provided by the factory.
- 2022-04-29 06:34:01下载
- 积分：1
