低复杂度GMSK线性接收机的设计与实现  

Design and Implementation of Low Complexity GMSK Linear Receiver

作　　者：莫明威[1] MO Ming-wei(Southwest China Institute of Electronic Technology, Chengdu 610036, China)

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《兵器装备工程学报》2017年第2期101-104,共4页Journal of Ordnance Equipment Engineering

摘　　要：通过基于GMSK信号的Laurent分解,提出了一种低复杂度GMSK线性接收算法,利用卫星GMSK信号的主要信号能量成分的表达式可等效为经过成型滤波的正交调制信号,设计出了低复杂度GMSK线性接收机,并对所提出的接收机进行了性能损失的理论分析。基于FPGA芯片对提出的接收机进行了硬件实现,实测结果表明,接收机的误码率性能相对于理论误码率性能的损失小于1 d B,所提出的接收机已应用于我国的探月工程任务中。A low complexity GMSK linear receiver algorithm based signals Laurent decomposition of GMSK was proposed. The new algorithm utilized the main signal energy component of satellite GMSK signal which is equivalent to shaping quadrature modulation signal to design a low complexity GMSK linear receiver, and the theoretical performance loss of the proposed receiver was analyzed. The receiver proposed was realized in FPGA, and the BER performance test showed that the BER performance losses was less than ldB comparing with the theoretical BER performance. The proposed receiver has been used in China＇s lunar exploration mission.

关 键 词：卫星信号 线性接收机 LAURENT分解 GMSK解调 

分 类 号：TN911.72[电子电信—通信与信息系统]