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a support multiple files to upload 2, support a variety of file formats to uploa...
1、支持上传多个文件2、支持上传各种文件格式的文件3、可以设置上传文件的目录4、可以将上传的文件改名保存5、支持上传图片生成缩略处理6、可以判断上传文件的大小、文件类型-a support multiple files to upload 2, support a variety of file formats to upload the document three, set the upload directory four documents can be uploaded file name preservation 5, support upload pictures generated abbreviated handle six can be judged to upload file size, file type
- 2022-04-29 17:22:56下载
- 积分:1
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开源libmodbus的C 库
开源libmodbus的C 库,支持win32、linux、mac系统,modbus协议解析,支持modbus-rtu、modbus-ascii、modbus-tcp
- 2022-02-04 05:53:03下载
- 积分:1
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这个是vb编写的控制服务器的程序,还包括一个于此相关的视频教程...
这个是vb编写的控制服务器的程序,还包括一个于此相关的视频教程-This is the control server vb preparation procedures, this also includes a related video tutorial
- 2022-07-17 15:13:16下载
- 积分:1
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无线局域网仿真
WLAN仿真-发送机
wlan No Comments
设置完系统参数后,开始产生发送数据。
1. 产生随机的发送bit(tx_bits),这里不考虑信道编码。
2. QAM映射
3. 将数据映射到不同载波,形成OFDM符号
4. 产生pilot,并将pilot插入OFDM符号中
5. 加入dc和guard子载波
6. 进行ifft,将频域信号变到时域,并加入循环前缀
7. 对信号进行overlap window
8. 在时域产生short preamble
9. 在时域产生long preamble
10. 将preamble和数据符号组成packet
11. 升采样
得到信道传输的数据Tx_signal_up
具体程序见附件 wlan_transmitter.m-WLAN Simulation- wlan No Comments transmitter system parameters set finished, the beginning to have to send data. 1. Have sent random bit (tx_bits), here does not consider channel coding. 2. QAM mapping 3. The data is mapped to a different carrier to form OFDM symbols 4. Have a pilot, and pilot inserted OFDM symbols 5. Adding dc and guard subcarriers 6. To carry out ifft, will change the frequency domain signal to time domain, and add cyclic prefix 7. the signals overlap window8. In the time domain have a short preamble9. In the time domain have a long preamble10. the preamble and data symbols packet11. or sampling re
- 2022-03-17 11:21:25下载
- 积分:1
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利特尔CMS在网站的数据库设计
litle cms for web site design in the database
using php,mysql
- 2022-04-22 01:55:00下载
- 积分:1
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PROTEUS single
PROTEUS单片机技术是现代电子工程领域一门迅速发展的技术,它的应用已经渗透到各种嵌入式系统中。-PROTEUS single-chip technology is the field of modern electronic engineering a rapidly evolving technology, its applications have penetrated into a wide variety of embedded systems.
- 2023-01-21 00:40:04下载
- 积分:1
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DSP LF2407A 板上指示灯例程 已跑通了
DSP LF2407A 板上指示灯例程 已跑通了-DSP LF2407A indicator routines have been run on the board had
- 2022-04-22 22:10:22下载
- 积分:1
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Kelushikaer algorithm, for the shortest path
克鲁斯卡尔算法,求最短路径-Kelushikaer algorithm, for the shortest path
- 2023-06-09 07:30:03下载
- 积分:1
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穿口助手
穿口助手-Assistant to wear mouth
- 2022-02-15 10:21:28下载
- 积分:1
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这款 可以测量 你的 系统 的 显示卡的 性能优良状态。
这款 可以测量 你的 系统 的 显示卡的 性能优良状态。
- 2022-08-03 04:38:13下载
- 积分:1