Implementation of coding and modulation of an M ary orthogonal spread spectrum system
Wei Li · Jounal of Xidian University · 2000
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 .