'Information signal' presentation slideshows

Modulation Formats

Modulation Formats. Modulation Formats. General. Optical communication systems are carrier systems . This implies that a wave of a frequency much higher than that of the information ( signal) is used to enable the

1.56k views • 122 slides

Modulation Formats

Modulation Formats. Modulation Formats. General. Optical communication systems are carrier systems . This implies that a wave of a frequency much higher than that of the information ( signal) is used to enable the

1.55k views • 122 slides

Chapter V. Amplitude Modulations

Chapter V. Amplitude Modulations. An unmodulated sinusoidal carrier signal can be described as e c (t) = E c cos2 p f c t (5-1) where E c is the peak continuous-wave (CW) amplitude and f c is the carrier frequency in hertz.

929 views • 79 slides

ELF

Wavelength. Frequency. THE ELECTROMAGNETIC SPECTRUM FROM 30 HZ TO 300 GHZ. (? = 300/f). 10 -1 m. 10 -2 m. 10 -3 m. 10 -4 m. 10 5 m. 10 4 m. 10 2 m. 10 6 m. 10 3 m. 10 7 m. 10 m. 1 m. Millimeter waves. ELF. VLF. LF. MF. HF. VHF. UHF. SHF. EHF. VF. 3 kHz.

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PULSE MODULATION

PULSE MODULATION. CHAPTER 4 Part 1. Chapter Outline. PART 1: Basic sampling technique Generation and recovery Pulse Amplitude Modulation (PAM) Pulse Duration Modulation (PDM) Pulse Position Modulation (PPM) Advantages & Disadvantages. Sampling.

1.89k views • 40 slides

ANALOG PULSE MODULATION

ANALOG PULSE MODULATION. CHAPTER 3 Ismahayati Adam. Chapter Outline. Basic sampling technique Sampling of bandpass signals Time Division Multiplexing Generation and recovery Pulse Amplitude Modulation (PAM) Pulse Duration Modulation (PDM) Pulse Position Modulation (PPM)

1.82k views • 40 slides

COMMUNICATION SYSTEM EEEB453 Chapter 2 AMPLITUDE MODULATION

COMMUNICATION SYSTEM EEEB453 Chapter 2 AMPLITUDE MODULATION. Dept of Electrical Engineering Universiti Tenaga Nasional. AM Transmitter. Transmitter Requirements: Generate a signal of correct freq with the right type of modulation at the right carrier freq.

854 views • 30 slides

421 views • 29 slides

RF technology

RF technology. Module contents. Technologies overview Spread Spectrum Direct Sequence Frequency Hopping Modulation DBPSK/DQPSK CCK. OSI Reference Model: Phy. Network Oper. System Network Layer Guarantees delivery data Drivers LLC Layer send/receive data LAN Controller MAC Layer

626 views • 27 slides

Principles of analogue modulation

Principles of analogue modulation. Lecture 3. Analogue Modulation Techniques. Theory of amplitude modulation Representation of AM Power relations in the AM wave Single-sideband techniques. Amplitude Modulation.

919 views • 23 slides

Data Communication and Networking

Data Communication and Networking. 332 Hardware Components of Data Communication. Lecture Overview. Signal Modulation AM FM PM QPSK QPM. Signal Modulation. The process of varying the electrical energy is modulation .

346 views • 18 slides

FM GENERATION

FM GENERATION. Direct Method: when the frequency of carrier is modulated by information signal Indirect Method: when the phase of carrier is modulated by information signal. Generation of FM waves. Varactor diode modulator( Direct method) Reactance modulator( Direct method)

5.95k views • 16 slides

PULSE MODULATION

PULSE MODULATION. PULSE MODULATION. A set of techniques where by a sequence of information-carrying quantities occurring at discrete instances of time is encoded into a corresponding regular sequence of electromagnetic carrier pulses

647 views • 15 slides

Lecture 2: AM Transmission

Lecture 2: AM Transmission. Prof. Park ELC 222 Essex County College. Modulation. Modulation is the process of impressing a low-frequency intelligence signal onto a higher-frequency carrier signal. The low-frequency intelligence signal Intelligence Modulating Signal Information Signal

511 views • 12 slides