'Amplitude modulation' diaporamas de présentation

Wireless Communications Principles and Practice 2/e T.S. Rapppaport

Wireless Communications Principles and Practice 2/e T.S. Rapppaport. Chapter 6: Modulation Techniques for Mobile Radio. Analog and Digital Modulation, Line Coding, AM/FM/SSB. Digital Fundamentals: The Sampling Theorem, Nyquist Sampling. Key Digital Modulation Techniques: BPSK, OFDM, GMSK.

1.76k views • 70 slides

Lecture-1 Prepared by: Abdul Hasib Lecture, IICT BUET

Lecture-1 Prepared by: Abdul Hasib Lecture, IICT BUET. Frequency, Spectrum and Bandwidth. Time domain (examining the signal over time): Continuous signal - signal with no breaks or discontinuities Discrete signal - signal with a finite number of values

959 views • 60 slides

CWNA Guide to Wireless LANs, Second Edition

CWNA Guide to Wireless LANs, Second Edition. Chapter Three How Wireless Works. Objectives. Explain the principals of radio wave transmissions Describe RF loss and gain, and how it can be measured List some of the characteristics of RF antenna transmissions

723 views • 52 slides

CWNA Guide to Wireless LANs, Second Edition

CWNA Guide to Wireless LANs, Second Edition. Chapter Three How Wireless Works. Objectives. Explain the principals of radio wave transmissions Describe RF loss and gain, and how it can be measured List some of the characteristics of RF antenna transmissions

824 views • 52 slides

Signal Encoding Techniques

Signal Encoding Techniques. Chapter 6. Reasons for Choosing Encoding Techniques. Digital data, digital signal Equipment less complex and expensive than digital-to-analog modulation equipment Analog data, digital signal Permits use of modern digital transmission and switching equipment.

820 views • 43 slides

Signal Encoding Techniques

Signal Encoding Techniques. Chapter 6. Reasons for Choosing Encoding Techniques. Digital data, digital signal Equipment less complex and expensive than digital-to-analog modulation equipment Analog data, digital signal Permits use of modern digital transmission and switching equipment.

747 views • 43 slides

Principles of Electronic Communication Systems

1.4k views • 38 slides

Responding to Concerns about Wind Energy

Responding to Concerns about Wind Energy. Sean Whittaker, P.Eng Policy Director, Canadian Wind Energy Association (CanWEA) August 14, 2007. Overview. About CanWEA Our activities and membership Status of wind in Canada Current and projected installed capacity Addressing concerns about wind

573 views • 33 slides

Analog Communications

Analog Communications. Overview. Communication systems Analog Modulation AM FM Digital Modulation ASK FSK Modems. Communication systems. The block diagram on the top shows the blocks common to all communication systems. Digital. Analog.

3.05k views • 32 slides

Enhanced images watermarking based on amplitude modulation

398 views • 29 slides

WWW and the Internet

WWW and the Internet Bus Different types of networks LAN (Local Area Network) Connects network devices over a relatively short distance Office Building / University / Home Possible topologies: Different types of networks MAN (Metropolitan Area Network) Connects an area larger than a LAN

710 views • 26 slides

S-72.245 Transmission Methods in Telecommunication Systems (4 cr)

S-72.245 Transmission Methods in Telecommunication Systems (4 cr). Linear Carrier Wave Modulation. Linear carrier wave (CW) modulation. Bandpass systems and signals Lowpass (LP) equivalents Amplitude modulation (AM) Double-sideband modulation (DSB) Modulator techniques

441 views • 25 slides

LED Drivers

1.56k views • 24 slides

GPS Signal Structure

GPS Signal Structure. Sources: GPS Satellite Surveying, Leick Kristine Larson Lecture Notes http://www.colorado.edu/engineering/ASEN/asen4519/asen4519.html. GPS Signal Requirements. Method (code) to identify each satellite

937 views • 23 slides

Intermediate Course (4) Transmitters Karl Davies

Intermediate Course (4) Transmitters Karl Davies. East Kent Radio Society EKRS. Transmitters. Summary Block diagrams of transmitters Oscillators for generating a carrier Operation of mixers Modulators AM, FM, and SSB modulation Harmonics Filters. Keying stage. Power amplifier.

375 views • 23 slides

Radio Waves

Radio Waves. Electromagnetic Radiation Radio Transmission and Reception Modulation Techniques. Electromagnetism. Electricity and magnetism are different facets of electromagnetism recall that a static distribution of charges produces an electric field

893 views • 20 slides

Band Limited Signals: Sending Analog Data with Band Limited Signals

Band Limited Signals: Sending Analog Data with Band Limited Signals. Based on Chapter 5 of William Stallings, Data and Computer Communication, 8 th Ed. Kevin Bolding Electrical Engineering Seattle Pacific University. Pulse Trains vs. Band-Limited Signals.

552 views • 10 slides

AMPLITUDE MODULATION

AMPLITUDE MODULATION. Communication Systems : Prof. Ravi Warrier. Main Topics : Double sideband modulation, demodulation Amplitude Modulation - Suppressed carrier Single sideband Vestigial Sideband Superhetrodyne AM Receiver.

594 views • 10 slides

227 views • 9 slides

Double Side Band Suppressed Carrier

270 views • 9 slides