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为了进一步研究2PSK非相干解调方案在完整的调制解调系统中的实用性,设计了基于差分相干解调的2DPSK和基于非相干解调的2PSK两种调制解调系统,利用Matlab/Simulink下的系统级设计工具DSP Builder,对两种调制解调系统进行建模与仿真,仿真结果验证了设计的正确性。将两种系统在逻辑资源为百万门的Cyclone II系列FPGA芯片EP2C35F672C6上进行实现,对两种系统的硬件实现性能进行对比分析,结果显示,基于非相干解调的2PSK调制解调系统在资源占用率和处理速度方面具有更优良的性能。
In order to further study the practicability of the 2PSK non-coherent demodulation scheme in a complete modem system, two modulation and demodulation systems based on differential coherent demodulation 2DPSK and non-coherent demodulation based 2PSK are designed. Using Matlab / Simulink System-level design tool DSP Builder, modeling and simulation of the two modem systems, the simulation results verify the correctness of the design. The two systems are implemented on the Cyclone II series FPGA chip EP2C35F672C6 with a million gates of logic resources. The performance comparison between the two systems is shown in the comparison. The results show that the 2PSK modulation and demodulation system based on non- Occupancy and processing speed with better performance.