数字通信
https://etc.lmdewz.xyz/PDF/数字通信.pdf 中文： https://etc.lmdewz.xyz/PDF/数字通信第五版.pdf
Digital communication over fading channels
https://etc.lmdewz.xyz/PDF/digital-communication-over-fading-channels.pdf
Gillbert线性代数配套教材
https://etc.lmdewz.xyz/PDF/GillbertLinear.pdf