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software radio

China Communications 2009年第1期6卷 64-64页

The case for software Defined radio systems is universally accepted now, whether it be to keep pace with rapidly evolving wireless standards, support for multiple applications or as a key ena-

关键词： software radio SDR

Study of software radio Receiver Development Platform

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Journal of Donghua University(English Edition) 2005年第2期22卷 126-129页

作者：仇润鹤刘锦高叶建芳 College of Information and Technology East China Normal University shanghai 200062 College of Information and Technology Donghua University shanghai 200051 College of Information and Technology East China Normal University shanghai 200062 College of Information and Technology Donghua University shanghai 200051

The Paper introduces an IF software radio receiver development Platform based on high-speed monolithic A/D Converter AD6640, Progranunable Digital Down-converter AD6620 and high-speed DSP chip TMSC320C6701. The implementation method is described as well as AD6620 parameter setting analysis. It also presents a flow chart of the on-line programming with the help of PC. The algorithm for demodulation AM signal is discussed.

关键词： software radio development platform Digital Down-converter demodulation algorithm

Research on software radio Fuze

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Journal of Beijing Institute of Technology 2001年第1期10卷 81-85页

作者：黄忠华崔占忠林森栗苹北京理工大学机电工程学院北京100081

The functions and characteristics of software radio are discussed. Using techniques and method of software radio, the concept and advantages of a new kind of radio fuze, software radio fuze, are analysed. Several kinds of hardware platform structures of the software radio fuze are studied and the key techniques are analysed. The software radio fuze will become the most promising radio fuze techniques in 21st century.

关键词： software radio fuze hardware platform digital signal processor(DSP)

software Instrument Based on software radio Concept

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Software Instrument Based on Software Radio Concept

2001 International Conferences on Info-tech and Info-net

作者： Wang Hua Zou Yi Kuang Jingming Modern Comm.Lab Dept.of EE Beijing Institute of Technology

ISBN: (纸本)0780370104;9780780370104

＜正＞In this paper,a virtual instrument based on software radio concept is introduced. The instrument is developed to generate widely existing RF or Baseband signals and demodulate various modulated signals for testing wireless communication systems. By virtue of such an instrument,the performances of typical MODEM（Modulator and Demodulator） can be *** architecture of the instrument is first presented,and then the design ideas and key technologies are *** software based on LABVIEW programming language is developed in order to have an interactive interface and also make the system be operated like an *** prior experiments show that the instrument can meet the general testing requirements of typical MODEM.

关键词： software radio software Instrument Modulation and Demodulation Digital Signal Processing

The Design and Implementation of the Experiment Platform for GPS Anti-jamming Based on software radio

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The Design and Implementation of the Experiment Platform for...

2006 8th International Conference on Signal Processing

作者： Wang Lijun Yang Xiaoniu Zhao Huichang Postdoctoral workstation No.36 Research Institute of CETC Lab of Anti-Jamming of Fuze Nanjing University of Science and Technology

ISBN: (纸本)0780397371;9780780397378

＜正＞In this paper,the design principle of GPS anti-jamming experiment platform based on software radio is firstly analyzed in detail,and then the generation method of jamming signal is *** composite signal combining GPS signal and jamming signal is sampled by A/D converter and stored in *** data are read by the computer,which are analyzed and simulated with the software *** results show the scheme is feasible,which can provide an effective experiment means for the analysis and design of GPS anti-jamming system.

关键词： GPS software radio Jamming Signal Generator Experiment Platform

The Research on Modeling and Simulation of Direct-sequence Spread Spectrum Communications System Based on software radio

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通讯和计算机（中英文版） 2006年第8期3卷 52-57页

作者： Dingxue Wu Feng Xue Wenping Fan Xiaohong Xiao Department of Computer Huanggang Normal College Huanggang 438000 China Institute of Pattern Recognition and Artificial Intelligence Huazhong University of Science and Technology Wuhan 430074 China

This paper probes into modeling and simulation of direct-sequence spread spectrum communications system based on software radio. The simulation result shows that the spread spectrum communication system that uses software radio technology has good anti-interference ability. Even there is much interference, the normal communication still can be guaranteed. At the same time, this digital direct spread intermediate frequency system has a good generalization. The required functions can be realized by changing software. It shows that using software radio technology to transform spread spectrum system has remarkable effects.

关键词： software radio Spread Spectrum Communication Simulation Anti-interference

Using of AD6654 in software radio Receiving System

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Using of AD6654 in Software Radio Receiving System

ICEMI'2005第七届国际电子测量与仪器学术会议

作者： Jia Xueqin Wang Xu Li Jinghong Li Qiang BioMedical Engineering Northeastern University Shen Yang 110004 China

Focuses on ADC and DDC block for wide-band multi-channel receiving system based on the software radio concept. Expatiates on the using of the new digital down converter—AD6654 in an Intermediate Frequ

关键词： ADC DDC software radio digital if receiver front-end.

Study on a Novel Laser Target Detection System Based on software radio Technique

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Study on a Novel Laser Target Detection System Based on Soft...

2008 International Conference on Optical Instruments and Technology

作者： Song SONG~*,Jia-hao DENG,Xue-tian WANG,Zhen GAO,Ji SUN,Zhi-hui SUN School of Aerospace Science and Engineering,Beijing Institute of Technology, No.5 Zhongguancun South Street,Beijing 100081,China

This paper presents that software radio technique is applied to laser target detection system with the pseudo-random code *** on the theory of software radio,the basic framework of the system,hardware platform,and the implementation of the software system are ***,the block diagram of the system,DSP circuit,block diagram of the pseudo-random code generator,and soft flow diagram of signal processing are *** results have shown that the application of software radio technique provides a novel method to realize the modularization, miniaturization and intelligence of the laser target detection system,and the upgrade and improvement of the system will become simpler,more convenient,and cheaper.

关键词： laser target detection software radio pseudo-random code DSP software signal processing broadband multi-frequency antenna high speed A/D modulation and demodulation

Low C/N_0 Carrier Tracking Loop Based on Optimal Estimation Algorithm in GPS software Receivers

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Chinese Journal of Aeronautics 2010年第1期23卷 109-116页

作者： Miao Jianfeng Chen Wu Sun Yongrong Liu Jianye Navigation Research Center College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016 China Department of Land Surveying and Geo-informatics Hong Kong Polytechnic UniversityHong Kong China

Suppressing jitter noises in a phase locked loop（ PLL） is of great importance in order to keep precise and continuous track of global positioning system （GPS）signals characterized by low carrier-to-noise ratio（ C/No ）. This article proposes and analyzes an improved Kalman-filter-based PLL to process weak carrier signals in GPS software receivers. After reviewing the optimal-bandwidth-based traditional second-order PLL, a Kalman-filter-based estimation algorithm is implemented for the new PLL by decorrelating the model error noises and the measurement noises. Finally,the efficiency of this new Kalman-filter-based PLL is verified by experimental data. Compared to the traditional second-order PLL, this new PLL is in position to make correct estimation of the carrier phase differences and Doppler shifts with less overshoots and noise disturbances and keeps an effective check on the disturbances out of jitter noises in PLL. The results show that during processing normal signals,this improved PLL reduces the standard deviation from 0. 010 69 cycle to 0. 007 63 cycle, and for weak signal processing,the phase jitter range and the Doppler shifts can be controlled within ± 17° and ±5 Hz as against ±25° and ＋ 15 Hz by the traditional PLL.

关键词： global positioning system signal processing Kalman filters software radio phase locked loop