北京大学学报（自然科学版）
北京大學學報（自然科學版）
북경대학학보（자연과학판）
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS PEKINENSIS
2006年
5期
690-695
,共6页
崔小欣%于敦山%盛世敏%崔小乐
崔小訢%于敦山%盛世敏%崔小樂
최소흔%우돈산%성세민%최소악
数字下变频器%模数转换器%带通采样%CSD%RAG%数控振荡器%查找表%CORDIC
數字下變頻器%模數轉換器%帶通採樣%CSD%RAG%數控振盪器%查找錶%CORDIC
수자하변빈기%모수전환기%대통채양%CSD%RAG%수공진탕기%사조표%CORDIC
DDC%ADC%bandpass sampling%CSD%RAG%NCO%LUT%CORDIC
基于经典的系统设计流程,设计并实现了一种应用于家庭网络核心SoC平台中无线通信系统接收机的专用数字中频下变频器.在系统级,利用系统建模工具MATLAB,完成了数字下变频器的行为建模及其功能划分;在电路级,完成了数字下变频器中主要功能模块的VLSI实现及其功能仿真.考虑到系统实现的复杂性及其硬件资源,对于数字滤波器,采用CSD和RAG等优化策略;对于数控振荡器,采用一种新型的结合LUT和CORDIC算法优点的混合算法实现方案.最后,搭建了基于Xilinx VirtexII XC2V1000-4FG256 FPGA的家庭网络无线通信系统验证平台,完成了数字中频下变频器的功能验证.
基于經典的繫統設計流程,設計併實現瞭一種應用于傢庭網絡覈心SoC平檯中無線通信繫統接收機的專用數字中頻下變頻器.在繫統級,利用繫統建模工具MATLAB,完成瞭數字下變頻器的行為建模及其功能劃分;在電路級,完成瞭數字下變頻器中主要功能模塊的VLSI實現及其功能倣真.攷慮到繫統實現的複雜性及其硬件資源,對于數字濾波器,採用CSD和RAG等優化策略;對于數控振盪器,採用一種新型的結閤LUT和CORDIC算法優點的混閤算法實現方案.最後,搭建瞭基于Xilinx VirtexII XC2V1000-4FG256 FPGA的傢庭網絡無線通信繫統驗證平檯,完成瞭數字中頻下變頻器的功能驗證.
기우경전적계통설계류정,설계병실현료일충응용우가정망락핵심SoC평태중무선통신계통접수궤적전용수자중빈하변빈기.재계통급,이용계통건모공구MATLAB,완성료수자하변빈기적행위건모급기공능화분;재전로급,완성료수자하변빈기중주요공능모괴적VLSI실현급기공능방진.고필도계통실현적복잡성급기경건자원,대우수자려파기,채용CSD화RAG등우화책략;대우수공진탕기,채용일충신형적결합LUT화CORDIC산법우점적혼합산법실현방안.최후,탑건료기우Xilinx VirtexII XC2V1000-4FG256 FPGA적가정망락무선통신계통험증평태,완성료수자중빈하변빈기적공능험증.
Based on the classical system design flow, a custom digital down converter (DDC) was designed and implemented for Homenet wireless communication system. At the system level, the behavior model of DDC was constructed with the assistant of system modeling tool MATLAB. At the circuit level, considering implementation complexity, a large number of digital filter optimizing schemes such as CSD and RAG were adopted;in our design, numerically controlled oscillators (NCO) was based on a new hybrid scheme, which combines the respective advantages of LUT and CORDIC algorithm. Homenet system verification flat including our custom digital down converter was implemented with Xilinx VirtexII XC2V1000-4FG256 FPGA.
