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Digital signal analog data

Xem 1-20 trên 35 kết quả Digital signal analog data
  • Lecture Data communications and computer networks: A business user's approach (8E) - Chapter 2. After reading this chapter, you should be able to: distinguish between data and signals, and cite the advantages of digital data and signals over analog data and signals; identify the three basic components of a signal; discuss the bandwidth of a signal and how it relates to data transfer speed;... Please refer to the content of document.

    ppt70p tieuvulinhhoa 22-09-2022 7 1   Download

  • Wireless networks - Lecture 2: Introduction to Wireless communication. The main topics covered in this chapter include: wireless transmission; digital data analog signals; noises; atmospheric noise like thunderstorms; attenuation and other impairments;...

    ppt38p haoasakura 30-05-2022 6 1   Download

  • Lecture Data Communication: Lesson 11 present the content: signals, analog and digital, analog and digital data, signals periodic, aperiodic signals, periodic signal example, simple analog signal (sine wave),...

    ppt21p bachdangky 06-09-2021 1 0   Download

  • Lecture Data Communication: Lesson 17 present the content: digital-to analog conversion, bit rate and baud rate, carrier signals, amplitude shift keying (ASK), frequency shift keying (FSK), phase shift keying (PSK), quadrature amplitude modulation (QAM),...

    ppt21p bachdangky 06-09-2021 0 0   Download

  • A computer network is designed to send information from one point to another. This information needs to be converted to either a digital signal or an analog signal for transmission. In this chapter, we discuss the first choice, conversion to digital signals.

    ppt71p koxih_kothogmih5 01-09-2020 8 0   Download

  • Converting digital data to a bandpass analog signal.is traditionally called digitalto-analog conversion. Converting a low-pass analog signal to a bandpass analog signal is traditionally called analog-to-analog conversion. In this chapter, we discuss these two types of conversions.

    ppt36p koxih_kothogmih5 01-09-2020 5 0   Download

  • Chapter 3: Wireless and mobile computing transmission fundamentals. The following will be discussed in this chapter: Signals for conveying information, analog and digital data transmission, channel capacity.

    ppt44p nanhankhuoctai8 23-06-2020 8 0   Download

  • The following will be discussed in this chapter: Signals for conveying information, time domain concepts, frequency domain concepts, relationship between data rate and bandwidth, analog and digital data transmission, analog and digital data, analog and digital signaling, analog and digital transmission, channel capacity, transmission media.

    ppt51p nanhankhuoctai8 23-06-2020 12 1   Download

  • The following will be discussed in this chapter: Where we stand on layers, data representation and signaling used, data encoding, reasons for choosing encoding schemes, factors involved, digital data to analog signal (ASK, FSK, PSK), analog data to digital signal.

    ppt62p nanhankhuoctai8 23-06-2020 4 0   Download

  • The following will be discussed in this chapter: Differential encoding, modem functions, digital vs analog (advantages of digital over analog), binary amplitude shift keying (limitations), NRZ-L, QPSK Vs.OQPSK, QAM.

    ppt116p nanhankhuoctai8 23-06-2020 13 0   Download

  • Chapter 6 - Physical layer. In this chapter, we study the duties of the physical layer, first as a converter that converts data to signals, then as a manager that controls the medium. After reading this chapter, the reader should be able to: Distinguish between analog and digital data, distinguish between analog and digital signals, understand the concept of bandwidth and the relationship between bandwidth and data transmission speed,...

    ppt66p nhanmotchut_2 19-10-2016 45 2   Download

  • Topics in the module include the following: Multimedia applications and requirements; multimedia data acquisition and formats; audio/Video fundamentals including analog and digital representations, human perception, and audio/video equipment, applications; digital audio signal processing, image/video Processing; digital audio synthesis; MIDI; audio and video compression; multimedia applications.

    pdf22p estupendo4 18-08-2016 62 2   Download

  • The second edition of this accessible book provides readers with an introductory treatment of communication theory as applied to the transmission of information-bearing signals. While it covers analog communications, the emphasis is placed on digital technology. It begins by presenting the functional blocks that constitute the transmitter and receiver of a communication system. Readers will next learn about electrical noise and then progress to multiplexing and multiple access techniques.

    pdf537p hoconganh_9x 22-09-2014 73 12   Download

  • The reader is provided with information on how to choose between the techniques and how to design a system that takes advantage of the best features of each of them. Imminently practical in approach, the book covers sampled data systems, choosing A-to-D and D-to-A converters for DSP applications, fast Fourier transforms, digital filters, selecting DSP hardware, interfacing to DSP chips, and hardware design techniques. It contains a number of application designs with thorough explanations.

    pdf424p ringphone 06-05-2013 58 2   Download

  • Today, the data acquisition technology has found its way into virtually every segment of electronics. A digital signal processing (DSP) system accepts analog signals as input, converts those analog signals to numbers, performs computations using the numbers and eventually converts the results of the computations back into analog signals. Once converted to numbers, signals are unconditionally stable. Error detection and correction methods can be applied to store,transmit and reproduce numbers with no corruption. Signals stored digitally are really just large arrays of numbers.

    pdf351p namde01 11-04-2013 77 8   Download

  • In addition to its numerical representation, digital data has a physical representation. For example, the bits in a hard disk are magnetic impulses on platters that can be read with analog sensors. Network wires contain electric signals that represent network packets and keyboard cables contain electric signals that represent which keys were pressed. A computer converts the electric signals to a digital representation. Digital photography and video are a digital representation of the light associated with physical objects.

    pdf16p giamdocamnhac 06-04-2013 49 6   Download

  • Transmission Basics In data networking, transmit means to issue signals to the network medium Transmission refers to either the process of transmitting or the progress of signals after they have been transmitted

    ppt51p doanhung_dtvtk10 19-03-2013 80 9   Download

  • Digital-to-analog conversion is the process of changing one of the characteristics of an analog signal based on the information in digital data.

    ppt36p trada85 22-01-2013 54 6   Download

  • In this section, we see how we can represent digital data by using digital signals. The conversion involves three techniques: line coding, block coding, and scrambling. Line coding is always needed; block coding and scrambling may or may not be needed.

    ppt71p trada85 22-01-2013 69 7   Download

  • Unipolar All signal elements have same sign Polar One logic state represented by positive voltage the other by negative voltage Data rate Rate of data transmission in bits per second Duration or length of a bit Time taken for transmitter to emit the bit

    ppt45p trada85 18-01-2013 54 3   Download

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