FPGA-BASED COSTAS LOOP DESIGN FOR EFFICIENT BPSK DEMODULATION UNDER DOPPLER EFFECTS
Keywords:
BPSK demodulator; Costas Loop; Doppler frequency; NCOAbstract
This paper aims to design a resource-efficient demodulator for BPSK-modulated data affected by Doppler shift in the presence of additive white Gaussian noise. The approach involves developing an Automatic Gain Control (AGC) module and a fully digital continuous mode Costa loop, implemented in XILINX and later converted into VERILOG. The XILINX code is written in fixed-point format to facilitate seamless conversion to VERILOG without complex transformations.
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