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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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社区管理信息系统的设计与实现,与一些相关的资料
社区管理信息系统的设计与实现,与一些相关的资料-Community Management Information System Design and Implementation, with some relevant information
- 2022-03-05 08:56:13下载
- 积分：1
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a UML good information, the use of ROSE to study the UML, the examples.
一个UML的好资料，使用ROSE来学习一下UML，有实例的。-a UML good information, the use of ROSE to study the UML, the examples.
- 2022-11-26 03:15:03下载
- 积分：1
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September 1997, NIST AES assembly program to replace DES. In August 1999, the fo...
1997年9月，NIST征集AES方案，以替代DES。 1999年8月，以下5个方案成为最终候选方案：MARS, RC6, Rijndael, Serpent, Twofish。 2000年10月，由比利时的Joan Daemen和Vincent Rijmen提出的算法最终胜出。（ Rijndael 读成Rain Doll。） http://www.esat.kuleuven.ac.be/~rijmen/rijndael/-September 1997, NIST AES assembly program to replace DES. In August 1999, the following five programs become final candidate : MARS, RC6, Rijndael, Serpent, Twofish. In October 2000, from Belgium J.J.K.Daemen3 Joan and Vincent Rijmen proposed algorithm eventually win. (Rijndael read Rain Doll.) Http://www.esat.kuleuven.ac.be/ ~ rijmen/rijndael /
- 2022-04-21 22:06:35下载
- 积分：1
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测验
Quiz-type game shows are increasingly
becoming popular on television
these days. In such games,
fastest finger first indicators (FFFIs) are
used to test the player’s reaction time.
The player’s designated number is displayed
with an audio alarm when the
player presses his entry button.
- 2023-01-24 19:10:04下载
- 积分：1
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这是一篇硕士研究生论文，主要探讨了用于IC热量表的设计，内容较好。可供参考。...
这是一篇硕士研究生论文，主要探讨了用于IC热量表的设计，内容较好。可供参考。-This is a postgraduate thesis focused on the Heat Meter for IC design, as well. For reference.
- 2023-08-03 03:50:03下载
- 积分：1
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一篇讲述内存管理的好文章，并非只针对c++，其思想可以借鉴到其他编程语言...
一篇讲述内存管理的好文章，并非只针对c++，其思想可以借鉴到其他编程语言-Memory management on a good article, not only for c++, Can learn from their thoughts to other programming languages
- 2022-07-26 10:38:41下载
- 积分：1
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GPRS的AT指令集，对搞GPRS的同行可是雪中送炭啊。
GPRS的AT指令集，对搞GPRS的同行可是雪中送炭啊。-GPRS the AT instruction set, and engage in peer GPRS ah but timely help.
- 2022-06-21 19:09:03下载
- 积分：1
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C51RF
C51RF-PS无线开发系统的说明书和快速开发指南（关于CC1110和CC2510）-C51RF-PS wireless development system for rapid development of guidelines and instructions (on the CC1110 and CC2510)
- 2022-03-01 23:10:10下载
- 积分：1
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垃圾压缩车的发展
垃圾压缩车的发展-The development of compressed garbage truck
- 2022-07-09 23:49:11下载
- 积分：1
