全数字突发信号接收机实现

An ALL-digital Receiver for Burst Communication

突发通信具有环境噪声大、突发帧短等特点,常规的解调器不能满足要求,文中提出了一种全数字突发信号实现方案,以并行进行位同步、载波同步等加快捕获速度。通过在Xilinx的FPGA上实现,并经工程测试表明,该接收机具有高速传输、捕获速度快等特点,适合高速突发通信场合使用。

Burst communication operates under severe noise conditions and in short frame, so the synchronization in receiver becomes very difficult. This paper proposes a all-digital receiver structure, and the acquisition process is speeded up by carrying on bit-synchronization and carrier-synchronization at the same time. Then it is implemented on the FPGA of Xilinx company. Test results indicate that the receiver possesses the performance of high-rate transmission and fast acquisition, and is suitable to the fast burst communication.