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根据BPSK调制信号调制机理和平方倍频法原理,在FPGA平台上设计实现了BPSK调制信号载波频率估计单元。利用ModelSim仿真环境对载频估计功能进行仿真,验证了平方倍频法对BPSK信号进行载波信号估计的有效性。仿真表明基于FPGA的BPSK信号载频估计单元,有较高的估计精度,且实现原理简单,有一定的实际应用价值。
According to the modulation principle of BPSK modulation signal and the principle of square frequency multiplication, a BPSK modulated signal carrier frequency estimation unit is designed and implemented on the FPGA platform. Simulation of carrier frequency estimation using ModelSim simulation environment to verify the effectiveness of the square frequency multiplication method for carrier signal estimation of BPSK signals. Simulation shows that the BPSK signal carrier frequency estimation unit based on FPGA has higher estimation accuracy, and the implementation principle is simple and has certain practical application value.