高速数字解调中的并行处理算法  

Parallel Processing Algorithms in High Rate Digital Demodulation

作　　者：陈晖[1,2] 易克初[1] 李文铎[2] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,西安710071 [2]中国电子科技集团公司第54研究所,石家庄050081

出　　处：《电子科技大学学报》2010年第3期340-345,共6页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(60572148)

摘　　要：在分析频域并行FIR滤波性能特点的基础上,提出了一种时域并行FIR滤波处理方案,该方案能以较低复杂度实现600 Mb/s以上数字调制信号的解调。还提出了一种基于多相滤波器组和并行处理的高精度符号同步方法,可以在不提高接收信号采样率和几乎不增加硬件复杂度的条件下,使符号同步精度提高一倍。最后给出了基于以上方法设计的原理样机的测试结果。ome useful parallel processing algorithms for the demodulator in a high rate data communication system are presented,including parallel FIR filter,parallel symbol synchronization,and parallel carrier recovery.After analyzing the characteristics of frequency domain parallel FIR filtering,a time domain parallel processing scheme is proposed,which can implement a demodulator for 600 Mb/s digital modulation signal with quite low hardware complexity.The paper proposes a scheme of high precise symbol synchronization loop based on parallel processing and multi-phase filter,which can remarkably improve the synchronization accuracy without sampling rate increasing and almost with no extra complexity.Finally,some testing results of a prototype of high rate data communication system based on the above algorithms are given.

关 键 词：高速解调 并行载波恢复 并行FIR滤波 并行符号同步 

分 类 号：TN918[电子电信—通信与信息系统]