高速多进制正交扩频通信系统的编码和调制

Implementation of coding and modulation of an M ary orthogonal spread spectrum system

介绍了多进制正交扩频通信的基本原理以及正交扩频码的选取 ,提出了传输两个逻辑信道 ,实现快速同步捕获和高速信息传输的新方法 ,适合于高速分组无线网的应用环境 .最后给出了传输信息速率为 2 5 6kbit/s和 5 12kbit/s,码片速率为 4 0 96MChip/s的

The principles of an M ary orthogonal spread spectrum system are first discussed. A new channel structure with two logic channels is presented, which can bring about faster synchronization acquisition and higher bit rates. It is suitable for the environment of high speed packet radio networks. Finally, a QPSK modulated, 16 ary orthogonal DSSS experimental transceiver is developed. It can support two bits rate: 256 kbit/s and 512 kbit/s with the constant Chip rate: 4.096 MChip/s .