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• 基于卷积神经网络训练模型识别图片验证码，0~9数字和26个字母大写和小写组合识别
• PIL模块生成验证码训练集和测试集，添加干扰点和干扰线来模拟实际复杂环境，os保存以及读取，通过去噪以及灰度化处理提高识别率，通过卷积神经网络池化后全连接层处理，识别成功率达到约96%
  💨🕥😴

Personal matlab sort out about communication simulations finally

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Divide the OFDM cattier bandwidth into multiple sub bands with different parameters, and filter the sub bands, and try to leave as few isolation bands as possible between the sub bands

🌞🕒😴

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Most communication channels have communication channels, so the only way to transmit signals through such channels is to move the fortunate frequency that carries the message to the frequency band of the channel

☀🕣😴

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Consider a band-limited noiseless channel. The channel response in frequency domain is H(f)=1, |f|≤3Hz, otherwise, H(f)=0

☔🕦😴

📌 Modulation and demodulation of signal based on matlab

☀🕠😴

🐳总结Git日常基本操作，不定时添加一些遇到的问题，以及从小白入门连接本地git和github等
🔔默认已有Github或Gitee等账号,已下载安装git

• 本地💻Git配置

  📌配置用户信息

  📌生成SSH Key

• Upload repositories from 💻to☁

• Clone repositories from ☁to💻

• 📘Git基本指令汇总

较为详细的实验总结，需要的可以借鉴参考

原因

• Visual Studio 与Nvidia CUDA NSightVSE冲突

现象

• Tab、Ctrl’+C 、 Ctrl’+K 等快捷键失效，智能代码提示不能正常显示，有时不会出现，有时要等四五秒，非常不正常

Setting中检查设置无误，尝试过重启、重置个人配置、重装等均无效
很长一段时间没有使用过vs，之前装了比较新的Nvidia CUDA，同时附带的有NSightVSE，也就是设计vs的拓展，问题出在这里

偶尔会用到正则匹配，下面做一个常用的正则表达式整理以便往后查询