现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
15期
73-75
,共3页
软件无线电%数字下变频%FPGA%仿真设计
軟件無線電%數字下變頻%FPGA%倣真設計
연건무선전%수자하변빈%FPGA%방진설계
software radio%digital downconversion%FPGA%simulation design
采用软件无线电思想,设计和实现了基于FPGA的数字下变频器,应用于数字中频接收机中,主要完成信号的下变频、多速率抽取和滤波等功能。采用自上向下的模块化设计方法,将数字下变频的功能划分为不同的模块,通过VHDL语言和IP核设计各功能模块。通过ISE和Matlab工具对数字下变频器进行了仿真设计,在FPGA硬件平台上进行了测试验证,结果表明:数字下变频器稳定可靠、通用性强、灵活性高,满足数字中频接收机的设计要求。
採用軟件無線電思想,設計和實現瞭基于FPGA的數字下變頻器,應用于數字中頻接收機中,主要完成信號的下變頻、多速率抽取和濾波等功能。採用自上嚮下的模塊化設計方法,將數字下變頻的功能劃分為不同的模塊,通過VHDL語言和IP覈設計各功能模塊。通過ISE和Matlab工具對數字下變頻器進行瞭倣真設計,在FPGA硬件平檯上進行瞭測試驗證,結果錶明:數字下變頻器穩定可靠、通用性彊、靈活性高,滿足數字中頻接收機的設計要求。
채용연건무선전사상,설계화실현료기우FPGA적수자하변빈기,응용우수자중빈접수궤중,주요완성신호적하변빈、다속솔추취화려파등공능。채용자상향하적모괴화설계방법,장수자하변빈적공능화분위불동적모괴,통과VHDL어언화IP핵설계각공능모괴。통과ISE화Matlab공구대수자하변빈기진행료방진설계,재FPGA경건평태상진행료측시험증,결과표명:수자하변빈기은정가고、통용성강、령활성고,만족수자중빈접수궤적설계요구。
The digital downconverter(DDC)based on FPGA was designed and implemented with the idea of software ra-dio. It is applied to the digital intermediate frequency receiver to complete the signal downconvertion,multi-rate decimation and filtering functions. The top-down modular design method is adopted to divide the DDC functions into different modules. All the function modules are designed with VHDL language and IP core. The simulation design of DDC is achieved with ISE and Matlab tools,and tested on the FPGA hardware platform. Performance testing results show that the DDC has high stability,high reliabili-ty,strong versatility and high flexibility,and can meet the design requirements of the digital intermediate frequency receiver.