基于DSP Builder的移相键控调制解调系统设计  

Design of PSK Modulation/Demodulation System Based on DSP Builder

作　　者：张凤娟[1] 盛利元[1] 刘洋洋[1] 

机构地区：[1]中南大学物理与电子学院,长沙410083

出　　处：《微电子学》2013年第1期37-40,46,共5页Microelectronics

基　　金：国家自然科学基金资助项目(60672041)

摘　　要：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。Two modulation/demodulation systems,2DPSK system based on differential coherent demodulation and 2PSK system based on non-coherent demodulation,were designed to study the applicability of 2PSK non-coherent demodulation scheme for complete modulation/demodulation system.The two system models were built and simulated with DSP Builder,a system-level design tool in Matlab/Simulink.Simulation results validated the design.The two systems were implemented on Cyclone II FPGA,EP2C35F672C6.Performance of the two systems were compared and analyzed.Results showed that the 2PSK system based on non-coherent demodulation had better performance in terms of resource utilization and processing speed.

关 键 词：DSP BUILDER 移相键控 差分相干解调 非相干解调 现场可编程门阵列 

分 类 号：TN919.6[电子电信—通信与信息系统]