ISO15031-4 是OBDII九种诊断标准的官方技术文档，用于OBDII诊断系统的开发。我还有很多汽车通信标准，期待共同学习中。-ISO15031-4 is tec. paper of nine diagnosis mode written in ISO .It is very important for developping diagnosis soft.

无线视频传输中自适应的前向纠错技术.pdf-wireless video, adaptive forward error correction technology

CDMA different techniques are used to use it modulate and demodulate