'Qpsk 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.

722 views • 70 slides

Signal: a supplementary material

Signal: a supplementary material. Taekyoung Kwon. signal. A signal is a time-varying event that conveys information from a source to a destination (more accurately, from a transmitter to a receiver). physical representation of data Frequency domain vs. time domain.

404 views • 33 slides

Signal: a supplementary material

Signal: a supplementary material. signal. A signal is a time-varying event that conveys information from a source to a destination (more accurately, from a transmitter to a receiver). physical representation of data Frequency domain vs. time domain. Data vs. signal analog vs. digital.

424 views • 33 slides

by Charles Brain G4GUO G4GUO@ARRL.net Ken Konechy W6HHC W6HHC@ARRL.net

378 views • 24 slides

Abdul-Aziz .M Al- Yami Khurram Masood

Abdul-Aziz .M Al- Yami Khurram Masood. Case Study: Phase III Transmitter Receiver Simulation. Physical Layer (PHY). The standard specifies the following four PHYs: An 868/915 MHz direct sequence spread spectrum (DSSS) PHY employing binary phase-shift keying (BPSK) modulation

386 views • 21 slides

QPSK modulation

QPSK modulation. QPSK receiver. Offset QPSK waveforms. Pi/4 QPSK signaling. Pi/4 QPSK phase shifts. Pi/4 QPSK transmitter. Differential detection of pi/4 QPSK. IF Differential Detection. FM Discriminator detector. FSK Coherent Detection. Minimum Shift Keying spectra. MSK modulation.

797 views • 18 slides

Frequency Reallocation Background

Frequency Reallocation Background.

215 views • 14 slides

Evaluation of GaAs Power MESFET for Wireless Communication

Evaluation of GaAs Power MESFET for Wireless Communication. Li Xiang. Outline. Introduction on power amplifiers for wireless communications Specific requirements for power amplifier design How to evaluate efficiency and linearity Design example of a low-distortion power MESFET Summary.

438 views • 13 slides

Evaluation of GaAs Power MESFET for Wireless Communication

Evaluation of GaAs Power MESFET for Wireless Communication. Li Xiang. Outline. Introduction on power amplifiers for wireless communications Specific requirements for power amplifier design How to evaluate efficiency and linearity Design example of a low-distortion power MESFET Summary.

276 views • 13 slides

I. Previously on IET

I. Previously on IET. QPSK Modulation over AWGN Channels. E S ? Energy per Symbol. Symbol Error given transmitted : Noise on Cosine axis < or Noise on Sine axis <. BER of QPSK over AWGN Channels. Notes: Define N 0 Total Noise Power

245 views • 12 slides

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [ Peak-to-Average Ratio Analysis of QPSK, OQPSK, and 64-QAM for 802.15.3 ] Date Submitted: [ 25 April 2001 ] Source: [ Stanley K. Ling and Susumu Hara ] Company [ Intel Corporation ]

138 views • 6 slides