基于Turbo乘积码的超短波高速数传系统性能研究

PERFORMANCE STUDY OF HIGH-SPEED VHF DATA TRANSMISSION SYSTEMBASED ON TURBO PRODUCT CODE

为满足超短波高速数传系统性能要求,将QPSK调制方式与Turbo乘积码相结合,借助自适应均衡技术消除多径干扰的影响,并将接收机分为DFE均衡器和TPC译码器两部分。基于MATLAB仿真平台,构建超短波高速数传系统仿真模型,对典型场景下的系统传输性能进行了仿真及分析。仿真结果表明,Turbo乘积码在中高码率下仍能获得较大的编码增益,基于Turbo乘积码的超短波高速数传系统可获得良好的传输性能。

In order to meet the performance requirement of high-speed VHF data transmission system,QPSK modulation is combined with turbo product code. The multipath interferences are resisted by adaptive equalization technique,and the receiver is composed of DFE equalizer and TPC decoder. Based on MATLAB platform,the simulation model for high-speed VHF data transmission system is constructed,and the transmission performances under typical VHF channel models are studied and analyzed. The simulation results show that turbo product code with medium to high code rate can obtain good coding gain,and good receiver perfomances can be obtained by using the above design methods.