基于ICS-554的软件无线电载波同步  

Carrier Synchronization of ICS-554 Software Radio Platform

作　　者：陈冒银[1] 代健美[1] 刘作学[1] 

机构地区：[1]装备指挥技术学院信息装备系,北京101416

出　　处：《兵工自动化》2006年第9期44-45,52,共3页Ordnance Industry Automation

摘　　要：在DSP中实现基于ICS-554的软件无线电载波同步,采用相关叉积鉴频器及软件锁相环SPLL进行鉴频。该锁相环由计算频率误差、更新环路中间变量、输出控制信号组成。利用两个A/D采样通道,使原始信号同时进入ICS-554输入。在通道2的A/D模块前加延迟滤波器。相关符号经过混频器、总线传输、软件锁相环计算及频偏控制字总线传输时间。由此通道1中的频偏在通道2中便具有实时效应。Implement carrier synchronization module in DSP based on ICS-554 was realized by adopting the cross-Product Automatically Frequency Tracking （CPAFT） algorithm and SPLL. The SPLL consists of calculation frequency error, updating loop middle variable, and output control signal. The two AID sampling channel was used to send the original signal into ICS 554 output at the same time. The delay filter was added in A/D module of Channel 2. The corresponding signal passed mixer, bus transmission, the SPLL calculation and the frequency of fest control bus to transmit time. So, the frequency offset in the channel one was equaled to one in the channel two in real-time.

关 键 词：软件无线电 载波同步 ICS-554 叉积鉴频器 软件锁相环 

分 类 号：TN961[电子电信—信号与信息处理]