无线电工程
無線電工程
무선전공정
Radio Engineering
2015年
11期
77-80
,共4页
可变速率%QPSK%模拟源%数字控制振荡器
可變速率%QPSK%模擬源%數字控製振盪器
가변속솔%QPSK%모의원%수자공제진탕기
variable data rate%QPSK%signal simulator%NCO
通信系统带宽与速率逐步提高, 要求与之匹配的模拟源速率相应提高. 介绍一种高速且可变速率的QPSK调制模拟源的实现方案, 数据速率为20~600 Mbps且每bit可变. 详细描述了核心并行数控振荡器 ( NCO) 及成型滤波模块的设计与实现, 对工程应用以及测试结果进行了分析. 结果表明模拟源各项功能指标达到了设计要求, 设计灵活, 可扩展性强, 满足多速率通信系统的测试要求.
通信繫統帶寬與速率逐步提高, 要求與之匹配的模擬源速率相應提高. 介紹一種高速且可變速率的QPSK調製模擬源的實現方案, 數據速率為20~600 Mbps且每bit可變. 詳細描述瞭覈心併行數控振盪器 ( NCO) 及成型濾波模塊的設計與實現, 對工程應用以及測試結果進行瞭分析. 結果錶明模擬源各項功能指標達到瞭設計要求, 設計靈活, 可擴展性彊, 滿足多速率通信繫統的測試要求.
통신계통대관여속솔축보제고, 요구여지필배적모의원속솔상응제고. 개소일충고속차가변속솔적QPSK조제모의원적실현방안, 수거속솔위20~600 Mbps차매bit가변. 상세묘술료핵심병행수공진탕기 ( NCO) 급성형려파모괴적설계여실현, 대공정응용이급측시결과진행료분석. 결과표명모의원각항공능지표체도료설계요구, 설계령활, 가확전성강, 만족다속솔통신계통적측시요구.
The bandwidth and data rate of communication systems are gradually increasing, which requires a corresponding increase in the rate of the simulating source. The implementation scheme of a high and variable data rate QPSK simulating source is introduced,in which the data rate changes from 20 to 600 Mbps with an accuracy of one bit.The design and implementation of the core module including the parallel numerical controlled oscillator and the shaping filter are described in detail.The system engineering appli-cations and test results are analyzed.The results show that the function specifications of the simulating source meet the design require-ments.The system is flexible and easily expanded,which meets the test requirements of multi-rate communication system.
