routers convert digital data into analog signals
Tài liệu Lecture 22: Digital Transmission of Analog Data (Baseband Transmission): doc
... Telecommunications, Winter 2000 Lecture-22 Digital Transmission Digital Transmission of Analog Data (Baseband Transmission): • Analog voice data must be translated into a series of binary digits before ... they can be transmitted in digital transmission system. One means of doing this is called pulse amplitude modulation (PAM). • The process of converting analog signal to digital is also known as ... transmission of analog information represents a basic application of digital communications. Sampling: • It is an operation that is basic to digital signal processing and digital communication....
Ngày tải lên: 09/12/2013, 16:15
KỸ THUẬT VIỄN THÔNG - Chương 6: Truyền dữ liệu tương tự và dữ liệu số (Analog and digital data transmission) pps
Ngày tải lên: 10/07/2014, 17:20
Turning Data into Information
... from: iDATA.ws Chapter 6 Turning Data into Information 99 To overcome these issues, ADO.NET includes the DataView class. As with the DataTable class, each DataView exposes a set of DataRow ... table to the DataView constructor. C# DataView someView = new DataView(someTable); Visual Basic Dim someView As New DataView(someTable) Dwonloaded from: iDATA.ws Chapter 6 Turning Data into Information ... the DataTable.AcceptChanges method. The DataRowView.Row property returns the actual row based on other settings in the DataRowView instance. Creating a DataView To create a DataView from a DataTable,...
Ngày tải lên: 03/10/2013, 00:20
DIGITAL DATA TRANSMISSION - I
... pulse generator, which can be used as a digital data bit. Figure 5 B –II (a) ASK On-off keying implementation We can see that the carrier modulates the data bits and the output waveform is ... block parameters Noise generator EE-458 LAB REPORT EXPERIMENT #5 DIGITAL DATA TRANSMISSION - I 1/27/2010 Page 12 Figure 5 B –II (c) block properties ... 10 dB BER for bit delay (1) = 0.0 KHz BER for bit delay (0) = 5.0 KHz 2) Changing The Data Rate Data Rate of 8KHz attenuation 0 dB BER for bit delay (1) = 0 Hz BER for bit delay (0)...
Ngày tải lên: 19/10/2013, 17:15
DIGITAL DATA TRANSMISSION - II
... carrier between known fixed frequencies to convey digital data. Normally, FSK modulation is achieved using just two frequencies to represent binary data. For example, a frequency of 2000 Hz may ... LAB REPORT EXPERIMENT 6 DIGITAL DATA TRANSMISSION - II SUBMITTED BY Solve the equation above and get (f 1 -f 0 )T ... are as follows: f s = 1 khz; f 0 = 5 khz. B. The output of the digital summer as well as that of the Digital Signal Source was observed on the oscilloscope. The graphs are as shown....
Ngày tải lên: 23/10/2013, 15:15
Tài liệu Retrieving Hierarchical Data into a DataSet ppt
... LiB ] Recipe 2.1 Retrieving Hierarchical Data into a DataSet Problem You want to fill a DataSet with parent and related child data, even if the DataSet already has a schema that includes ... HierarchicalDataSetForm_Load(object sender, System.EventArgs e) { ds = new DataSet( ); // Get the schema for the Orders table. DataTable parentTable = new DataTable("Orders"); SqlDataAdapter ... with the grid. dataGrid.DataSource = parentTable.DefaultView; } private void loadDataSetButton_Click(object sender, System.EventArgs e) { // Remove all data from the DataSet and refresh...
Ngày tải lên: 24/12/2013, 05:15
Tài liệu Lab B: Creating Templates to Import Data into the Metadirectory pptx
... a data source (for which there is no predefined MA) into the metadirectory. ! Use template language to create Parsing and Construction templates to import the connected directory data into ... Namespace Scenario At Northwind Traders, a SQL server database stores the employee telephone numbers. This information needs to be integrated into the metaverse namespace. A connection has already ... Templates tab, on the Add tab, right-click in the data box, and then click Edit. c. Copy the first record set from the import file and paste it into the Notepad window for the Add script. d....
Ngày tải lên: 24/01/2014, 19:20
Báo cáo khoa học: "Machine-Learning-Based Transformation of Passive Japanese Sentences into Active by Separating Training Data into Each Input Particle" doc
... supervised data. We divided the su- pervised data into closed and open data (Both the closed data and open data had 1788 items each.). The distribution of target case particles in the data are ... terms of separating the training data into source parti- cles. Baseline 3 separates the training data into 592 Table 6: Deletion of features Deleted Closed data Open data features Eval. A Eval. B ... data to determine features that were deleted in feature se- lection and used the open data as test data (data for evaluation). We used 10-fold cross validation for the experiments on closed data...
Ngày tải lên: 17/03/2014, 04:20
digital data integrity the evolution from passive protection to active management
Ngày tải lên: 03/07/2014, 16:06
Analog-to-Digital Conversion
... people to hear. The process to convert digital signals to analog signals is completed by a DAC. The most commonly used technique to convert digital signals to analog signals is the summation method ... Quantization. ANALOG- TO -DIGITAL CONVERSION 55 3.3.2 Integration The integration technique uses an integrator, a comparator, and a controller to convert analog signals to digital signals. A sampled analog ... signals to digital signals: (a) successive approximation converter, (b) integration-based converter, (c) counter-based converter, and (d) parallel ADC. second MSB divides the remaining half into...
Ngày tải lên: 29/09/2013, 20:20
Foundations of analog and digital electronic circuits
... discretizing matter. 1 Digital systems use the digital abstraction, which is based on discretizing signal values. Clocked digital systems are based on discretizing both signals and time, and digital systolic ... Two-Terminal Element 33 1.7 Modeling Physical Elements 36 1.8 Signal Representation 40 1.8.1 Analog Signals 41 1.8.2 Digital Signals Value Discretization 43 1.9 Summary and Exercises 46 chapter 2 Resistive ... goals: Combine circuits and electronics into a single, unified treatment, and establish a strong connection with the contemporary worlds of both digital and analog systems. These goals arise from...
Ngày tải lên: 09/01/2014, 17:03
Analog and digital filter design
... systems. Digital filters process signals in the time domain. Analog signals have first to be sampled and digitized at discrete (clock) intervals using an analog- to -digital converter. Because the analog ... and signal genera- tors also need filters. Even where signals are converted into a digital form. using analog- to -digital converters, analog filters are usually needed to prevent alias- ing. ... which they handle data during signal processing. 38 Digital Analog and Digital Filter Design Filter Types Digital filters are becoming more widespread in use and are replacing analog filters...
Ngày tải lên: 09/01/2014, 17:18
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