基于DSP Builder的数字AGC设计

数字AGC(自动增益控制)是数字中频接收中的重要辅助电路。数字中频接收机中设置AGC的目的,在于使接收机的增益随着信号的强弱进行调整,或者保持接收机的输出恒定在一定范围。通过利用数字AGC技术。采用Matlab/Simulink基于模型的设计方法,算法设计和仿真使用基于Simulink的数字信号处理模型库DSPBuilder,通过硬件在回路仿真,在FPGA中实现数字AGC,下载验证结果与仿真结果到达一致。

Design of digital AGC Based on DSP Builder

Digital AGC(automatic gain control) is an important auxiliary circuit in digital intermediate frequency receiver. The purpose of setting AGC in the digital intermediate frequency receiver is to make the receiver adjust with the signal strength or remain the output in a constant range. By using the digital AGC technology and Matla/Simulink model-based design, algorithm design and simulation model libraries according to Simulink of DSP Builder. Through the hardware is in the simulation, it can reach an agreement among digital AGC in FPGA, the tested results of downloading and simulation results.