无线电通信技术
無線電通信技術
무선전통신기술
RADIO COMMUNICATIONS TECHNOLOGY
2012年
3期
43-46
,共4页
TETRA数字集群系统%平方根升余弦滤波器%基带脉冲成形%FPGA
TETRA數字集群繫統%平方根升餘絃濾波器%基帶脈遲成形%FPGA
TETRA수자집군계통%평방근승여현려파기%기대맥충성형%FPGA
TETRA digital trunking system%SRRC filter%baseband pulse shaping%FPGA
为了满足陆上集群无线电（TETRA）数字集群系统对基带信号成形处理的要求,提出了一种用于TETRA数字集群系统的平方根升余弦（SRRC）滤波器设计,论述了基带成形滤波和SRRC滤波器的基本原理,分析了窄带调制带宽限制、TETRA邻道干扰限制和滤波器阶数等需解决的问题,论述了滤波器参数设计和FIR滤波器FPGA实现等关键技术,完成了对基于FPGA的SRRC滤波器设计的仿真分析。
為瞭滿足陸上集群無線電（TETRA）數字集群繫統對基帶信號成形處理的要求,提齣瞭一種用于TETRA數字集群繫統的平方根升餘絃（SRRC）濾波器設計,論述瞭基帶成形濾波和SRRC濾波器的基本原理,分析瞭窄帶調製帶寬限製、TETRA鄰道榦擾限製和濾波器階數等需解決的問題,論述瞭濾波器參數設計和FIR濾波器FPGA實現等關鍵技術,完成瞭對基于FPGA的SRRC濾波器設計的倣真分析。
위료만족륙상집군무선전（TETRA）수자집군계통대기대신호성형처리적요구,제출료일충용우TETRA수자집군계통적평방근승여현（SRRC）려파기설계,논술료기대성형려파화SRRC려파기적기본원리,분석료착대조제대관한제、TETRA린도간우한제화려파기계수등수해결적문제,논술료려파기삼수설계화FIR려파기FPGA실현등관건기술,완성료대기우FPGA적SRRC려파기설계적방진분석。
In order to satisfy the baseband signal pulse shaping requirements of TETRA digital trunking system,a design of square root raised cosine （SRRC） filter for use in TETRA system is proposed in this paper. First,the basic principle of pulse shaping and SRRC filter is introduced. Then,the problems of bandwidth limitation of narrowband modulation,TETRA adjacent channel interference （ACI） limitation and filter order limitation which are needed to be solved are analyzed, and the filter design, FIR filter FPGA implementation and other key technologies are discussed. At last,the simulation analysis of SRRC filter design based on FPGA is completed.
