Description: Designing Digital Down Conversion Systems with Altera CIC MegaCore and FIR Compensation Filter v6.1 Platform: |
Size: 54469 |
Author:邱应强 |
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Description: MATLAB程序的仿真比较。随后，针对QPsK，详细讨论了其基本原理和具体的实现算法，并进行了仿真验证，然后选用HSP502巧数字上变频芯片和HSP50214B数字下变频芯片，设计了数字调制、解调器的实现方案。最后，作为对整个数字视频图像传输系统的宏观认识，利用M户JLAB中的实时建模仿真Simullnk库对典型的视频图像传输系统一数字视频广播系统(D vB)，进行了建模、仿真和初步的分析，结果表明:在高斯白噪声的传输环境下，系统采取的一系列抗干扰措施，包括内、外码级联的信道纠错编码和先进的调制技术(o FDM)等，保证了信源信息传输的有效进行。-MATLAB simulation comparison. Then, against QPsK to discuss in detail the basic principles and specific algorithm, a simulation test, and then choose the cleverest HSP502 figures HSP50214B frequency chips and digital down conversion chips, the design of digital modulation, demodulation for the realization of the program.MJLABSimullnk(D vB):Andean white noise transmission environment, the system adopted a series of anti-jamming measures, including internal and external codes Cascade Channel advanced error correction coding and modulation techniques (o FDM), ensuring a source of information for the effective transmission. Platform: |
Size: 8598032 |
Author:lzy |
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Description: MATLAB程序的仿真比较。随后，针对QPsK，详细讨论了其基本原理和具体的实现算法，并进行了仿真验证，然后选用HSP502巧数字上变频芯片和HSP50214B数字下变频芯片，设计了数字调制、解调器的实现方案。最后，作为对整个数字视频图像传输系统的宏观认识，利用M户JLAB中的实时建模仿真Simullnk库对典型的视频图像传输系统一数字视频广播系统(D vB)，进行了建模、仿真和初步的分析，结果表明:在高斯白噪声的传输环境下，系统采取的一系列抗干扰措施，包括内、外码级联的信道纠错编码和先进的调制技术(o FDM)等，保证了信源信息传输的有效进行。-MATLAB simulation comparison. Then, against QPsK to discuss in detail the basic principles and specific algorithm, a simulation test, and then choose the cleverest HSP502 figures HSP50214B frequency chips and digital down conversion chips, the design of digital modulation, demodulation for the realization of the program.MJLABSimullnk(D vB):Andean white noise transmission environment, the system adopted a series of anti-jamming measures, including internal and external codes Cascade Channel advanced error correction coding and modulation techniques (o FDM), ensuring a source of information for the effective transmission. Platform: |
Size: 8597504 |
Author:lzy |
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Description: 软件无线电数字下变频的研究及系统仿真，主要是介绍数字下变频的方案。-Software-defined radio digital down conversion of the research and system simulation, mainly introduce digital down-conversion program. Platform: |
Size: 1063936 |
Author:liujl |
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Description: 介绍了一种基于新型FPGA的高速数字下变频的实现方法 它充分利用数字下变频的优化算法以及FPGA领域的新技术去除由于数据速率过高而造成的各种瓶颈,极大地减少了计算量
和FPGA片内资源的消耗.-Introduce a new type of FPGA-based high-speed digital down conversion method which realize the full advantage of digital down conversion of the optimization algorithm, as well as the field of FPGA as a result of new technology to remove data rate is too high and caused by the bottleneck, greatly reducing the computation and FPGA chip resource consumption. Platform: |
Size: 622592 |
Author:戈立军 |
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Description: :数字下变频技术是软件无线电的关键技术之一. 数字下变频技术是将宽带高速数据流信号变成窄带低速
数据流信号,这个过程就是信号的抽取. 实现抽取的关键问题是如何实现抽取前的数字滤波,特别是多级抽取时滤
波器的设计与实现. 对于一个具体信号进行多级抽取时滤波器的设计给出了一个可行的方案-: Digital down-conversion software radio technology is one of the key technologies. Digital down-conversion technology is a broadband high-speed data streams to signal low-speed data stream into a narrow-band signal, this process is the signal extraction. The realization of extraction, the key question is how to achieve pre-extraction digital filtering, especially when Multistage Decimation Filter Design and Implementation. For a specific signal when Multistage Decimation filter design are given a feasible solution Platform: |
Size: 204800 |
Author:赵平 |
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Description: 在接收信号的数字化、软化的实现中,数字下变频起着重要的作用。本文首先介绍了数字下
变频的组成结构,然后详细分析了数字下变频的工作原理,描述了在实现数字下变频时,设计方案所
采用的高效滤波器———CIC 滤波器和多相抽取滤波器的结构和原理。最后,用通过Simulink 对数字
下变频的性能进行了仿真。在仿真的基础上使用Insight 公司的FPGA 开发系统,用测试电路实测了
数字下变频的性-In the receiving digital signal, softening the realization, the digital down-conversion plays an important role. This article first introduced the digital down conversion of the composition, and then a detailed analysis of digital down conversion of the working principle described in the realization of digital down conversion, the design used in high-performance filters--- CIC filters and multi-phase extraction filter structure and principle. Finally, with the adoption of Simulink for digital down-conversion performance of the simulation. In the simulation based on the use of Insight s FPGA development system is measured using the test circuit of the digital down-conversion of Platform: |
Size: 333824 |
Author:赵平 |
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Description: FPGA中实现基于查找表方式（LUT）的DDS实现，可用在数字下变频和COSTAS锁相环中，Verilog编写，本人已经调通-In FPGA-based lookup table approach (LUT) to achieve the DDS can be used in the digital down-conversion and COSTAS PLL, Verilog prepared, I have transferred Qualcomm Platform: |
Size: 148480 |
Author: |
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Description: vhdl语言写的数字下变频的实现，整个工程文件，xlinx ise用的-VHDL language written in the realization of digital down conversion, the whole project file, xlinx ise used Platform: |
Size: 1868800 |
Author:杨斌 |
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Description: 数字下变频的Verilog程序，测试可以直接使用，将A/D信号下变频为基带I，Q两路信号-Digital down conversion of the Verilog program, testing can be used directly to A/D signal down-conversion to baseband I, Q signals two Platform: |
Size: 3072 |
Author:gaigai |
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Description: FPGA实现数字下变频，仅供大家参考，希望有用。-Use FPGAto achieve digital down-convertion.For your reference, I hope it can be useful for you Platform: |
Size: 167936 |
Author:高青松 |
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Description: 应用matlab 软件设计了下变频器中的CIC、HB、FIR滤波器等核心模块，并将各模块融为一体从软件实现的角度完成了对系统的搭建和功能仿真。-About such key algorithms as CIC, HB, FIR of each module in down- conversion, discussion, abstraction and summarization are given in this paper. Using the MATLAB software, we design such core modules as CIC filter, HB filter and FIR filter of the digital down converter. Platform: |
Size: 182272 |
Author:邓建良 |
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Description: DDC仿真模型，利用systemgenerator实现数字下变频-DDC simulation model, the use of digital down-conversion systemgenerator Platform: |
Size: 16384 |
Author:曾重阳 |
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Description: 文中应用软件无线电思想对数字下变频器中的几个关键技术进行了研究,对下变频各个模块所涉及到的CIC、HB、FIR等关键算法进行了讨论、提炼与总结,应用matlab软件设计了下变频器中的CIC、HB、FIR滤波器等核心模块,并将各模块融为一体从软件实现的角度完成了对系统的搭建和功能仿真.仿真结果表明,系统实现了对中频信号的下变频处理且无失真现象,大大减少了软件无线电系统数宁信号处理的运算量和数据的存储量,极大地提高了系统的实时性.-The paper application software radio digital down converter in the thinking of several key technologies have been studied for the next conversion involved in each module to the CIC, HB, FIR and other key algorithms were discussed, refined and summarized the application of matlab software design downconverter in the CIC, HB, FIR filters and other core modules, and integration of various modules from the software point of complete structures and functions of the system simulation. The simulation results show that the system achieved the right under the IF signal Frequency processing and without distortion, thus greatly reducing the number of software-defined radio system, rather the amount of signal processing operations and data storage capacity, greatly improve the system in real time. Platform: |
Size: 287744 |
Author:王楚宏 |
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Description: 基于DSP builder搭建的DDS模块，可以用在数字下变频中的NCO等-Based on DSP builder to build the DDS module can be used in digital down-conversion of the NCO, etc. Platform: |
Size: 7168 |
Author:郑程 |
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Description: 仿真了DDC的工作流程，不了解数字下变频的朋友可以下载-DDC emulation of the workflow, do not understand the digital down-conversion can be downloaded to see if a friend Platform: |
Size: 1024 |
Author:郑程 |
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Description: 本文以软件无线电为指导，提出基于CORDIC算法利用FPGA平台数字下变频器设计方案。首先分析下变频器的结构；然后采用模块化设计思想，将数字下变 频的功能模块包括数字控制振荡器、CIC抽取滤波、HBF抽取滤波器、FIR低通滤波器进行分析和FPGA的设计；最后在 MATLAB/DSPBuilder下硬件仿真模块进行仿真并给出仿真结果。-In this paper, software-defined radio as the guidance, based on the CORDIC algorithm uses the FPGA platform, digital down-converter design. First analyzes the structure of down-converter and then use a modular design concept, the digital down-conversion function modules including digital controlled oscillator, CIC decimation filtering, HBF decimation filter, FIR low-pass filter for analysis and FPGA design the final In the MATLAB/DSPBuilder under the hardware emulation module simulation and simulation results. Platform: |
Size: 201728 |
Author:jiang |
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Description: 多通道数字下变频的硕士论文，电子科大2009-多通道数字下变频器的研究与设计！-Multi-channel digital down conversion of the master' s thesis, UESTC 2009- multi-channel digital down converter in the research and design! Platform: |
Size: 6139904 |
Author:peter |
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Description: 研究了高倍抽取的数字下变频设计，重点分析了基于级联积分梳状滤波器和级联半带滤波器的多级抽样频率算法。-Extraction of the high-powered digital down-conversion design, the focus of a cascaded integrator comb filter based on cascaded half-band filter and the multi-level sampling frequency algorithm. Platform: |
Size: 219136 |
Author:w |
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