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通过仿真,分析了多
通过仿真,分析了多径效应和多普勒效应的原理.并给出了移动信道的建模方案和程序.每个结论都给出了仿真程序可直接运行.-through simulation, Analysis of the multi-path effects and the principle of Doppler effect. and gives the mobile channel modeling programs and procedures. Conclusion gave each a simulation program can run.
- 2022-11-13 21:10:03下载
- 积分:1
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串行通信
/*
- 2023-04-28 01:15:03下载
- 积分:1
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MODBUS RTU 51与维纶触摸屏通信例程。
应用背景51和维纶触摸屏的通信。MODBUS RTU 51与维纶触摸屏通信例程。支持的功能码:位:01(读)、05(写),字:03(读)、06(写)还有与数码管显示输入的数据!注释的也比较详细。个人觉得移植性也比较好。各种的单片机上可以移植修改,关键技术51单片机与威纶通触摸屏通讯说明
本程序仅作为一个通信示例程序,实际使用需要根据需要修改。
请使用EB8000 V3.45以上软件打开触摸屏程序,程序为压缩后的触摸屏程序,请使用EB8000软件 工具——压缩/解压缩 菜单下的工具先进行解压缩;单片机使用Keil uVision3 V3.50编译
一、硬件连接
使用ATMEl 89S52单片机。
二、软件
1、通讯环境
触摸屏设置为主站,即PLC 类型 MODBUS RTU,通讯参数设为“9600,N,8,1”。
2、触摸屏程序,需要读取八个位,以及八个字,每次最少读取16个位,字可以一次读取一个也可以一次读取八个。
有0X1-0X8八个位切换开关,6X1-6X8八个字输入元件,支持的功能码:位:01(读)、05(写),字:03(读)、06(写)
当没有写操作时,屏不断的向单片机发送如下码(16进制显示):
01 01 00 00 00 10 3D C6 (位读取)
01 03 00 00 00 08 44 0C (字读取)
此时,如果不给屏发送相应返回值的话,屏就会提示“PLC no response”
3、51单片机程序思路及说明
- 2022-02-02 15:58:29下载
- 积分:1
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a useful wavelet program can be used in signal processing
很好的小波实用基础程序,实用方便,可用于一维,二维信号处理-a useful wavelet program can be used in signal processing
- 2022-10-10 14:40:03下载
- 积分:1
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一个基于VB环境开发的OPC程序,希望能给您有所帮助
一个基于VB环境开发的OPC程序,希望能给您有所帮助-a development environment based on VB OPC procedures in the hope that you can help
- 2022-05-05 06:21:34下载
- 积分:1
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很好的文章关于OFDM plot based 信道估计算法
很好的文章关于OFDM plot based 信道估计算法-Very good article on the OFDM plot based channel estimation algorithm
- 2022-10-16 09:45:03下载
- 积分:1
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描述如何在VC6.0下判断USB端口操作,以及如何使用USB COM…
下面介绍如何操作VC6.0判断USB端口,以及如何使用USB通讯的详细信息,供参考
- 2022-05-16 00:34:05下载
- 积分:1
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5寸GPS固件insstall
5 inch gps firmware for inssta-5 inch gps firmware for insstall
- 2022-01-27 21:19:47下载
- 积分:1
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本程序通过分析OFDM信号的循环平稳特性,美国..
本程序通过分析OFDM信号的循环平稳特性,利用循环谱对OFDM信道进行估计。-This procedure by analyzing the OFDM signal is cyclostationary properties, the use of cyclic spectrum of the OFDM channel estimation.
- 2023-03-09 08:20:03下载
- 积分:1
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6*6mimo ofdm with USRP
应用背景This document describes how to set up a 6x6 multiple input, multiple output (MIMO) system using NI LabVIEW software and NI USRP™ (Universal Software Radio Peripheral) hardware. After a brief discussion of MIMO, the paper examines the hardware and software based on LabVIEW for a 6x6 MIMO-OFDM system using 4-QAM as modulation scheme. The system presented here is also capable of working as a 2x2 MIMO and 4x4 MIMO system with appropriate parameter configuration.关键技术With MIMO, you can increase wireless system performance without increasing power consumption. It is based on the idea that when using multiple antennas, the transmitted signal progresses through different wireless channels, from the transmitter antennas to the receive antennas, to
- 2022-01-26 04:02:17下载
- 积分:1