digital data digital signal encoding techniques

DIGITAL DATA TRANSMISSION - I

DIGITAL DATA TRANSMISSION - I

... Digital Signal Source: The signal sources produce a series of “0”s (about –2.5 V) and “1”s (+2.5 V) at the data rate set by the Master Clock. The time period of each bit is T = 1/fs. This signal ... detection process. This signal is useful in accurately measuring errors in detected data due to a communications channel. Figure 5 A (b) Block parameters digital signal source Summer: ... signal source produces equally likely 0’s and 1’s. Figure 5 A (d) Block parameters limiter Error Detector: The processed signal is compared with a sample of the signal source. For each data...

Ngày tải lên: 19/10/2013, 17:15

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DIGITAL DATA TRANSMISSION - II

DIGITAL DATA TRANSMISSION - II

... output of the digital summer as well as that of the Digital Signal Source was observed on the oscilloscope. The graphs are as shown. It is seen that there is no change in the output signal when ... : A. Actual FSK systems use “continuos phase” signals wherein one signal starts where the other signal stops. A VCO is used to generate such signals. Figure 6D (a)FSK using Phase lock ... begins at the start of every data period and proceeds at the frequency fx until the end of the data period. Then the process repeats. Figure 6c The FSk Modulated signal B. Cross –...

Ngày tải lên: 23/10/2013, 15:15

20 347 0
DIGITAL FILTERS AND SIGNAL PROCESSING docx

DIGITAL FILTERS AND SIGNAL PROCESSING docx

... simplifies significantly performance analysis of signal processing by analog or digital filters at any possible input signal parameter variation. The signals are directly linked with Laplace transform ... results. Figure 1. Preprocessed dataset Digital Filters and Signal Processing36 Chapter 9 Analytical Approach for Synthesis of Minimum L2-Sensitivity Realizations for State-Space Digital Filters 213 Shunsuke ... frequency response masking (FRM) IIR digital filters is done in detail. FRM IIR digital filters are designed by FIR masking digital subfilters together with IIR interpolation digital subfilters. The FIR...

Ngày tải lên: 15/03/2014, 23:20

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digital data integrity the evolution from passive protection to active management

digital data integrity the evolution from passive protection to active management

... and more equal digital opportunity. On one hand, e-commerce has provided new opportuni- ties for economic growth. On the other hand, it has created a social problem of digital divide. Digital divide ... influences that have been created by e-commerce in a digital economy. TLFeBOOK Socio-Economic Impacts and Influences of E-Commerce in a Digital Economy 7 Copyright â 2005, Idea Group Inc. Copying ... computing on individual well-being. Some data suggest that increasing Internet use is associated with social isolation, withdrawal, and stress. Although the data also suggest that Internet “addiction”...

Ngày tải lên: 03/07/2014, 16:06

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KỸ THUẬT VIỄN THÔNG - Chương 6: Truyền dữ liệu tương tự và dữ liệu số (Analog and digital data transmission) pps

KỸ THUẬT VIỄN THÔNG - Chương 6: Truyền dữ liệu tương tự và dữ liệu số (Analog and digital data transmission) pps

... ba ngữ cảnh này. II.2.1. Dữ liệu Có hai dạng dữ liệu là dữ liệu tương tự (analog data) và dữ liệu số (digital data) . Dữ liệu tương tự có các giá trị liên tục theo th ời gian. Chẳng hạn, tiếng ... dụng thường xuyên trong truyền thông dữ liệu với ít nhất là ba ng ữ cảnh sau: - Dữ liệu (Data) . - Tín hiệu (Signal) - Công nghệ truyền (Transmission). Chúng ta đã thảo luận trong chương 1 về sự ... toàn có th ể phát hiện được lỗi. Chương 6: Truyền dữ liệu tương tự và dữ liệu số (Analog and digital data transmission) Trong việc truyền dữ liệu từ nguồn đến đích, những vấn đề liên quan là bản chất...

Ngày tải lên: 10/07/2014, 17:20

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Data Mining Classification: Alternative Techniques - Lecture Notes for Chapter 5 Introduction to Data Mining pdf

Data Mining Classification: Alternative Techniques - Lecture Notes for Chapter 5 Introduction to Data Mining pdf

... (Status=Married) → No © Tan,Steinbach, Kumar Introduction to Data Mining 44 Nearest Neighbor Classification Problem with Euclidean measure: High dimensional data ã curse of dimensionality Can produce counter-intuitive ... covered by R1 © Tan,Steinbach, Kumar Introduction to Data Mining 36 Instance Based Classifiers Examples: Rote-learner ã Memorizes entire training data and performs classification only if attributes ... $10K to $1M © Tan,Steinbach, Kumar Introduction to Data Mining 40 1 nearest-neighbor Voronoi Diagram © Tan,Steinbach, Kumar Introduction to Data Mining 38 Nearest-Neighbor Classifiers  Requires...

Ngày tải lên: 15/03/2014, 09:20

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E-commerce: Digital Markets, Digital Goods ppt

E-commerce: Digital Markets, Digital Goods ppt

... between digital markets and traditional markets. Digital Goods The Internet digital marketplace has greatly expanded sales of digital goods. Digital goods are goods that can be delivered over a digital ... conditions. Digital goods, such as music, video, software, and books, can be delivered over a digital network. Once a digital product has been produced, the cost of delivering that product digitally ... Key System Applications for the Digital Age Review Summary 1 What are the unique features of e-commerce, digital markets, and digital goods? E-commerce involves digitally enabled commercial transactions...

Ngày tải lên: 30/03/2014, 06:20

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Báo cáo khoa học: "An Empirical Evaluation of Data-Driven Paraphrase Generation Techniques" pptx

Báo cáo khoa học: "An Empirical Evaluation of Data-Driven Paraphrase Generation Techniques" pptx

... paraphrasing techniques, our evaluation focuses on two families of data- driven ap- proaches that are widely studied and used. More comprehensive surveys of data- driven paraphrasing techniques can ... 2011. c 2011 Association for Computational Linguistics An Empirical Evaluation of Data- Driven Paraphrase Generation Techniques Donald Metzler Information Sciences Institute Univ. of Southern California Marina ... evalu- ating data- driven paraphrase approaches. There are likely other characteristics, beyond redundancy, that may also be important for developing robust, effec- tive paraphrasing techniques. ...

Ngày tải lên: 30/03/2014, 21:20

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Báo cáo hóa học: " Editorial Emerging Signal Processing Techniques for Power Quality Applications" docx

Báo cáo hóa học: " Editorial Emerging Signal Processing Techniques for Power Quality Applications" docx

... instrumentation, digital signal process- ing, energy, signal theory, electrical quality and simulation and climatology. Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume ... renewed interest in ex- ploiting signal processing techniques for power quality mea- surements and analysis. The rationale for such enthusiasm is that signal processing techniques, indeed, provide ... reviewing the principles and applications of atomic signal modeling of electric disturbance signals. As well addressed by the authors, the disturbance signal can be modeled using a linear combination...

Ngày tải lên: 22/06/2014, 19:20

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Báo cáo hóa học: " Research Article Scalable Video Coding with Interlayer Signal Decorrelation Techniques" doc

Báo cáo hóa học: " Research Article Scalable Video Coding with Interlayer Signal Decorrelation Techniques" doc

... the detail signal for the LP representation of the original detail signal. We term the new detail as the reduced detail signal, since the removal of the coarse component from the origi- nal detail signal ... configuration. 5.1. Reduced-coarse signal In the closed-loop configuration, the encoder updates the coarse signal based on the quantized detail signal. Thus, the reduced detail signal is obtained as c r := ... estimates the coarse signal and the original signal at higher resolution using (17). Observe that, because of the quantized detail signal inside the update loop, the update signal at the encoder...

Ngày tải lên: 22/06/2014, 20:20

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Báo cáo hóa học: "Multiresolution Signal Processing Techniques for Ground Moving Target Detection Using Airborne Radar" pptx

Báo cáo hóa học: "Multiresolution Signal Processing Techniques for Ground Moving Target Detection Using Airborne Radar" pptx

... multiresolution processing concept. The “∗” indicates that the targets in the training data is an issue. signal processing techniques that attempt to exploit long CPIs to improve the detection performance ... of the techniques using simulated and collected radar data. Finally, Section 6 summarizes the findings and outlines areas for fur- ther research. 2. GMTI RADAR SIMULATION Simulated radar data was ... Corporation EURASIP Journal on Applied Signal Processing Volume 2006, Article ID 47534, Pages 1–16 DOI 10.1155/ASP/2006/47534 Multiresolution Signal Processing Techniques for Ground Moving Target...

Ngày tải lên: 22/06/2014, 23:20

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Báo cáo hóa học: "Editorial Advanced Signal Processing Techniques for Bioinformatics" pdf

Báo cáo hóa học: "Editorial Advanced Signal Processing Techniques for Bioinformatics" pdf

... Corporation EURASIP Journal on Applied Signal Processing Volume 2006, Article ID 51090, Pages 1–2 DOI 10.1155/ASP/2006/51090 Editorial Advanced Signal Processing Techniques for Bioinformatics Xue-Wen ... and poses new challenges for the signal processing community. Analysis of data for life-science problems provides an interesting appli- cation domain for standard signal processing methods such as ... properly cited. The success of bioinformatics in recent years has been driven, in par t, by advanced signal processing techniques: estima- tion theory, classification, pattern recognition, information theory,...

Ngày tải lên: 22/06/2014, 23:20

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Báo cáo hóa học: " New Complexity Scalable MPEG Encoding Techniques for Mobile Applications" pot

Báo cáo hóa học: " New Complexity Scalable MPEG Encoding Techniques for Mobile Applications" pot

... mo- tion. 6. CONCLUSIONS We have presented techniques for complexity scalable MPEG encoding that gradually reduce the quality as a function of limited resources. The techniques involve modifications to the ... 369–377, 1998. EURASIP Journal on Applied Signal Processing 2004:2, 236–252 c  2004 Hindawi Publishing Corporation New Complexity Scalable MPEG Encoding Techniques for Mobile Applications Stephan ... data partitioning using a cyclical sequence of several scalable DCTs with different co- efficient selection functions. The complete cycle would com- pute each coefficient at least once. Temporal data...

Ngày tải lên: 23/06/2014, 01:20

17 184 0
Data Mining Concepts and Techniques phần 1 potx

Data Mining Concepts and Techniques phần 1 potx

... kinds of informa- tion repositories. Data cleaning and data integration techniques may be performed on the data. Database or data warehouse server: The database or data warehouse server is respon- sible ... data repository, as well as to transient data, such as data streams. Thus the scope of our examination of data repositories will include relational databases, data warehouses, transactional databases, ... 61 2.3.2 Noisy Data 62 2.3.3 Data Cleaning as a Process 65 2.4 Data Integration and Transformation 67 2.4.1 Data Integration 67 2.4.2 Data Transformation 70 2.5 Data Reduction 72 2.5.1 Data Cube Aggregation...

Ngày tải lên: 08/08/2014, 18:22

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