DQPSK modulation with XILINX FPGA. 2 level butterworth analog filter for I & Q D/A output. -DQPSK modulation with XILINX FPGA. 2 level butterworth analog filter for I & Q D/A output.

vhdl经典教程，本人亲自学习实践，很有用。带你进入fpga世界。(VHDL classic tutorials, I personally learn practice, very useful. Take you into the FPGA world.)