计算机工程与设计
計算機工程與設計
계산궤공정여설계
Computer Engineering and Design
2015年
10期
2695-2699
,共5页
数字下变频%软件无线电%现场可编程门阵列%数字控制振荡器%采样率转换%Simulink
數字下變頻%軟件無線電%現場可編程門陣列%數字控製振盪器%採樣率轉換%Simulink
수자하변빈%연건무선전%현장가편정문진렬%수자공제진탕기%채양솔전환%Simulink
DDC%software radio%FPGA%NCO%sample rate conversion%Simulink
为实现对高速中频数字信号的降频、降速和滤波,得到低速零中频的数字基带信号,利用 Matlab的Simulink工具箱中的DSP Builder的高级模块库设计模型系统,在模型系统中加入时钟频率和通道数等顶级设计约束脚本,设计优化流水线的RT L系统。给出M atlab与M odelsim仿真的结果分析以及综合、布局布线后的占用资源的对比,仿真结果表明了该系统设计方案和参数设置的正确性与实时性。
為實現對高速中頻數字信號的降頻、降速和濾波,得到低速零中頻的數字基帶信號,利用 Matlab的Simulink工具箱中的DSP Builder的高級模塊庫設計模型繫統,在模型繫統中加入時鐘頻率和通道數等頂級設計約束腳本,設計優化流水線的RT L繫統。給齣M atlab與M odelsim倣真的結果分析以及綜閤、佈跼佈線後的佔用資源的對比,倣真結果錶明瞭該繫統設計方案和參數設置的正確性與實時性。
위실현대고속중빈수자신호적강빈、강속화려파,득도저속령중빈적수자기대신호,이용 Matlab적Simulink공구상중적DSP Builder적고급모괴고설계모형계통,재모형계통중가입시종빈솔화통도수등정급설계약속각본,설계우화류수선적RT L계통。급출M atlab여M odelsim방진적결과분석이급종합、포국포선후적점용자원적대비,방진결과표명료해계통설계방안화삼수설치적정학성여실시성。
To realize frequency deducing ,velocity deducing and filtering for high‐speed digital signals of IF and obtain a low rate baseband signal of zero‐IF .Using advanced blocksets of DSP builder in Simulink toolboxes of Matlab ,the module system was designed .Top scripts were added in model system to generate the RTL to optimize the pipeline ,such as the clock frequency and the number of channels .The simulation results of Matlab and Modelsim were analyzed and comparison results of the use of re‐sources after placement and routing were presented .The simulation results show the correctness and the real‐time property of the design and parameter settings .