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介绍了π/4-DQPSK调制解调的基本原理,在MATLAB7.0.4中对其进行了仿真,画出了误比特率曲线;并完成了π/4-DQPSK调制器的FPGA实现,在Quartus8.0中验证了实现的正确性。
The basic principle of π / 4-DQPSK modulation and demodulation is introduced and simulated in MATLAB7.0.4. The bit error rate curve is drawn. The FPGA realization of π / 4-DQPSK modulator is completed in Quartus8. 0 in the verification of the correctness of the implementation.