Demodulation PowerPoint PPT Presentations

Communication Theory. Lecture 9. 2. FM demodulation (PLL) ... Thus the PD output is proportional to the information signal. 05.04.2006. Communication Theory ...

What are Frequency demodulators ? ... Drawing FM Demodulation Methods for Frequency Demodulation Frequency Discriminator Slide 4 Extension to Phase Modulation ...

Recall page252 For a system with optical amplifier If systems with cascades of optical amplifiers, optical signal consists of a lot of optical noise, ...

The receiver uses a local carrier, same as the sending carrier, ... Suitable for the broadcast (1-to-M) communication. wk5c (4 ) However, we need. In textbook, ...

Squaring Circuit. y =x2. Low Pass. Filter. x(t) DC. Modulating signal. Harmonic signal. Final Output: (ii) DSBFC Square Law. Demodulation AMDSB-FC. Remove. DC ...

Modulation, Demodulation and Coding Course Period 3 - 2005 Sorour Falahati Lecture 2 Last time, we talked about: Important features of digital communication systems ...

Title: PowerPoint Presentation Last modified by: swkang Created Date: 1/1/1601 12:00:00 AM Document presentation format: Other titles

Pulse shaping to have zero ISI at the sampling time ... Eye pattern:Display on an oscilloscope which sweeps the system response to a ...

... are going to talk about: Another source of error: Inter-symbol interference (ISI) Nyquist theorem. The techniques to reduce ... Inter-Symbol Interference (ISI) ...

... of L bits, form the trellis. The trellis has L K-1 sections or levels ... For each state in the trellis at the time which is denoted by , define a parameter ...

Transforming the information source to a form compatible with a ... Quant. levels. 111 3.1867. 110 2.2762. 101 1.3657. 100 0.4552. 011 -0.4552. 010 -1.3657 ...

Email: sorour.falahati@signal.uu.se. Office: Magistern 2112A. Tel.: 018-471 1077 ... Strictly stationary: If none of the statistics of the random process are ...

It finds a path through trellis with the largest metric (maximum correlation or ... At each step in the trellis, it compares the partial metric of all paths ...

Fourier Application to Signal Modulation and Demodulation 3.8 Kamen and Heck 3.8.1 Amplitude Modulation s(t) = Ax(t) cos( ct) Acos( ct) carrier signal x(t) is the ...

Given the observation vector , perform a mapping from to an estimate of the ... Optimum decision rule (maximum a posteriori probability): Applying Bayes' rule gives: ...

... interleaving as a means to combat bursty errors which makes the channel looks like uncorrelated. ... We also studied 'Concatenated codes' which are simply ...

... error detection and correction capability. Encoding and decoding ... error correction coding? Error performance vs. bandwidth. Power vs. ... a factor of ...

Zero-Order-Hold Sampling. Zero-Order-Hold: Flat top or zero-order-hold (ZOH) ... Zero-order-hold sampling can be considered as a cascade of impulse sampling with ...

BER of 16-ary NFSK in Rayleigh Fading Channel with Different Block Size BER of NFSK in Rayleigh Fading Channel with Different Alphabet Size BER of 16-ary NFSK in ...

Calibration: Hot-wire vs Plasma Sensor. Hot-wire: q1, q2, q3 = f(Vo,To,?Uo, C1-C6) Mean ... Hotwire rms fluctuations depend non-linearly on mean flow calibration. ...

Institute for Cosmic Ray Research Univ. of Tokyo ... 3rd order sidebands vanish at the anti symmetric port. Asymmetry (~3m) 51.75MHz. x3 ...

With coherent detection, turbo codes have remarkable performance in AWGN and fading channels. However with non-coherent or partially ... S. Ten Brink, 1999. ...

LO is required for a mixer to down-convert RF signal to audio frequency. ... In the mixer, LO works as a switch, hence it behaves as square waves. ...

Charging/Discharging voltage vs(t) Cc To remove DC component & smoothen vs(t) Optimum AM Demodulation Ripple amplitude in AM Demodulation ...

Basic Concepts Definition of modulation Spectra of information source signals Purposes of using modulation Does the free lunch exist? Definition of demodulation

The VIRGO Interferometer. N. W. EOM. Task of the alignment system: ... Demodulation of photodiode signals at different output beams = longitudinal error signals ...

Title: Modulation, Demodulation and Coding Course Author: sf Last modified by: Jeff Created Date: 1/1/1601 12:00:00 AM Document presentation format

... continues until either the destination decodes the message or all blocks have been transmitted. ... BICM-ID: Iterative demodulation and decoding. ...

Amplitude Modulation Wei Li weili@ieee.org Content What is Modulation Amplitude Modulation (AM) Demodulation of AM signals Calculation and Examples Summary What is ...

Title: Adaptive Linear Predictive Frequency Tracking and CPM Demodulation Author: malay Last modified by: Balu Santhanam Created Date: 10/9/2003 10:45:15 PM

To decode, receiver computes angle between received vectors ... Decodes uninterfered part via standard MSK demodulation ... Decode rest of the interfered part ...

2.9 : AM Receiver AM demodulation is the reverse process of AM modulation. A conventional double sideband AM receiver converts the amplitude-modulated waveform back ...

Title: Modulation, Demodulation and Coding Course Author: sf Last modified by: Jeff Created Date: 1/1/1601 12:00:00 AM Document presentation format

Internet QoS architectures and Mechanisms for Quality of Service by Zheng Wang ... Baud, bit, simplex, duplex, half-duplex, modulation/demodulation ...

1. E. Sicard Frequency Manipulation. Part 2 Frequency Manipulation. 2 ... VCO=Voltage contr. oscillator. Select channel. 3. QPSK Demodulation. 10 ...

Tuning, Modulation, Demodulation, Error recovery methods ... UK Cadet. Humanitarian Missions (IHS, Red Cross, Salvation Army etc) ...

Review. Squaring function can be used in sinusoidal demodulation ... Audio CD players. Audio compression: MPEG 1 layer 3. audio (MP3), AC3 ...

100% of Modulation, Demodulation and Control Capabilities Software Defined, Thus Upgradeable ... SDRs Revitalizing the Hobby... How Do I Learn More? www.flex ...

Multiple tuned circuits are used to get selectivity in the IF ... Low 2nd IF gives good selectivity. NBFM (2.5kHz dev) demodulation also requires a low IF, 455kHz ...

Ideal Filter/Error Function Filter. Pulsar numbers ... [i] Neil J. Cornish and Shane L. Larson, 'LISA data analysis: Doppler demodulation', Class. ...

Filtering and Demodulation of the signals is made from a PC connected to Ciao ... Spectrum and Spectrogram analysis. Generation of a CW carrier via DDS ...

Functional Tests for 433.920 MHz Propagative Readers as ... Oscilloscope. Spectrum. Analyzer with. FSK Demodulation. Monitor PC (Display Reader. Commands) ...

Audio IC mainly includes audio amplifiers, audio converters, audio processors, etc., such as CODECs, DSPs, and Audio SoCs. The functions of Audio IC include the reading and demodulation of audio analog signals, the conversion between analog and digital signals, and the adjustment of volume and sound quality. An audio amplifier amplifies low-power audio signals to a level which is suitable for driving loudspeakers. The input signal of an audio amplifier may only measure a few hundred microwatts, but its output may be tens or even thousands of watts. Design parameters for audio amplifiers include gain, frequency response, distortion and noise.

A FREQUENCY HOPPING SPREAD SPECTRUM TRANSMISSION SCHEME FOR UNCOORDINATED COGNITIVE RADIOS Xiaohua (Edward) Li and Juite Hwu Department of Electrical and Computer ...

Edward A. Lee. Designing a Relevant Lab for Introductory Signals and Systems. Edward A. Lee ... Introduce applications before the theory fully supports them. ...

... ideal transmitter) = Power / Volts = A large and heavy 12 Volt battery! ... 0.833 amps from a 12 Volt battery, which is more reasonable for a portable radio ...

filtering and Limiting the transmitted signal. ... a band-pass filter prior to transmitting. ... Noise is any signal that interferes with a transmitted signal. ...

Assumed field is homogeneous and isotropic. ... Estimated field based on observations and correlation matrix (assumes the ... Anisotropy ...

PWM Audio Amplifiers Zhiming Deng Chinwuba Ezekwe Dimitrios Katsis Outline PWM Basics Digital Modulator Signal Flow Pulse Edge Delay Error Correction Volume ...

Amplitude Shift Keying (ASK) Introduction Amplitude-shift keying (ASK) is a form of modulation that represents digital data as variations in the amplitude of a ...

Blockschaltbild I Eugen Wolf Betreuerin: Kathleen Jerchel Arbeiten mit dem Blockschaltbild Arbeiten mit dem Blockschaltbild - Beteiligt am Gesamtprojekt (Studierende ...

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The relative timing of RHESSI and radio (Phoenix-2) fine structures ... Error bars: perturb solution until log L drops by unity. A problem case. Attenuator in ...

Times New Roman Arial Default Design Bitmap Image Microsoft Equation 3.0 PWM Audio Amplifiers Outline PWM Basics Natural PWM (NPWM) Uniformly Sampled ...

Wireless Communications with MATLAB Chapter 4. Introduction to OFDM Yong Soo Cho | Jaekwon Kim Won Young Yang | Chung G. Kang

Lagrangian measurements using Doppler techniques: Laser and Ultrasound. Nicolas Mordant ... (heterodyne detection) 10 liters of water, 2x 1kW motors. 250 m particles ...