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Digital signal digital data

Xem 1-20 trên 104 kết quả Digital signal digital 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

  • This paper presents a designing and implementing circuit of wireless charging of the parking management system based on Radio frequency identification (RFID) technique and STM32F103 as the control kernel. The advantage of digital modulation technique in applied radio signals is used to identify specific targets and read-write relevant data. Communication is established between the parking space reader and the onboard responder.

    pdf9p linyanjun_2408 21-04-2022 8 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

  • Lecture Data Communication: Lesson 13 present the content: composite signals, frequency spectrum and bandwidth, other definitions of bandwidth, digital signals, method calculate bandwidth, bit interval and bit rate, significant spectrum and significant bandwidth,...

    pdf18p bachdangky 06-09-2021 7 0   Download

  • The following will be discussed in this chapter: Circuits require memory to store intermediate data; sequential circuits use a periodic signal to determine when to store values; single bit storage element is a flip flop; a basic type of flip flop is a latch; latches are made from logic gates.

    ppt37p larachdumlanat126 31-12-2020 11 0   Download

  • Magnetic resonance spectroscopy provides metabolic information about living tissues in a non-invasive way. However, there are only few multi-centre clinical studies, mostly performed on a single scanner model or data format, as there is no flexible way of documenting and exchanging processed magnetic resonance spectroscopy data in digital format.

    pdf11p vioklahoma2711 19-11-2020 8 2   Download

  • In this lecture, students will be able to understand: introduction, network models, data & signals, digital transmission, transmission media, error detection & correction, data link control, wired LANs – ethernet, wireless LANs, network layer - logical addressing, internet protocols, network layer - delivery, forwarding, and routing, transport layer, switching & vlans, application layer.

    ppt18p koxih_kothogmih5 01-09-2020 34 0   Download

  • One of the major functions of the physical layer is to move data in the form of electromagnetic signals across a transmission medium. Whether you are collecting numerical statistics from another computer, sending animated pictures from a design workstation, or causing a bell to ring at a distant control center, you are working with the transmission of data across network connections. Chapter 3 discusses the relationship between data, which are created by a device, and electromagnetic signals, which are transmitted over a medium.

    ppt116p koxih_kothogmih5 01-09-2020 16 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 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: Data representation, signaling, encoding techniques, digital data, digital signals (line coding), advantages of digital transmission, disadvantages of digital transmission, signal elements vs. data elements, data rate vs. signal rate (bit rate vs. baud rate/pulse rate/modulation rate), unipolar encoding,…

    ppt65p nanhankhuoctai8 23-06-2020 9 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

  • DVB-T2 (Digital Video Broadcasting – Second Generation Terrestrial) is the extension of the television standard DVB-T. This system transmits compressed digital audio, video, and other data in PLPs (physical layer pipes), using OFDM modulation with channel coding and interleaving. This paper provides the performance evaluation of DVB-T2 for outdoor reception by the received signal measurement.

    pdf6p son248 24-03-2020 16 0   Download

  • This paper reviews the main technical solutions adopted by the next-generation mobile broadcasting standard DVB-NGH, the handheld evolution of the second-generation digital terrestrial TV standard DVB-T2.

    pdf12p son248 24-03-2020 19 0   Download

  • Recently terrestrial digital broadcasting systems have experienced a growth with the demand of high-data rate. In order to meet such demand, the multiple-input multiple-output (MIMO) technology has received wide attention. This paper proposes a pre-coding method, which provides high-space channel correlation for the improved performance over terrestrial broadcasting channels when the MIMO spatial multiplexing (SM) is adopted for digital video broadcasting-next generation handheld systems.

    pdf5p son248 24-03-2020 15 0   Download



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