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, ...
Modulation, Demodulation and Coding Course Period 3 - 2005 Sorour Falahati Lecture 2 Last time, we talked about: Important features of digital communication systems ...
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 ...
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 ...
... 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 ...
Given the observation vector , perform a mapping from to an estimate of the ... Optimum decision rule (maximum a posteriori probability): Applying Bayes' rule gives: ...
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 ...
... 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 ...
With coherent detection, turbo codes have remarkable performance in AWGN and fading channels. However with non-coherent or partially ... S. Ten Brink, 1999. ...
EE521 Analog and Digital Communications ... before class MWF 10:30 AM to 11:30 AM ... demodulation Incoherent demodulation Depends on modulation BPSK ...
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 ...
Amplitude Modulation Wei Li weili@ieee.org Content What is Modulation Amplitude Modulation (AM) Demodulation of AM signals Calculation and Examples Summary What is ...
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: Adaptive Linear Predictive Frequency Tracking and CPM Demodulation Author: malay Last modified by: Balu Santhanam Created Date: 10/9/2003 10:45:15 PM
... continues until either the destination decodes the message or all blocks have been transmitted. ... BICM-ID: Iterative demodulation and decoding. ...
To decode, receiver computes angle between received vectors ... Decodes uninterfered part via standard MSK demodulation ... Decode rest of the interfered part ...
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 ...
Internet QoS architectures and Mechanisms for Quality of Service by Zheng Wang ... Baud, bit, simplex, duplex, half-duplex, modulation/demodulation ...
100% of Modulation, Demodulation and Control Capabilities Software Defined, Thus Upgradeable ... SDRs Revitalizing the Hobby... How Do I Learn More? www.flex ...
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 ...
A FREQUENCY HOPPING SPREAD SPECTRUM TRANSMISSION SCHEME FOR UNCOORDINATED COGNITIVE RADIOS Xiaohua (Edward) Li and Juite Hwu Department of Electrical and Computer ...
... 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 ...
Edward A. Lee. Designing a Relevant Lab for Introductory Signals and Systems. Edward A. Lee ... Introduce applications before the theory fully supports them. ...
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 ...
Introduction to Communications Toolbox in MATLAB 7.6.0 (R2008) Presented By: Amit Degada NIT, Surat. Electronics Engineering Department, Sardar Vallabhbhai National ...
filtering and Limiting the transmitted signal. ... a band-pass filter prior to transmitting. ... Noise is any signal that interferes with a transmitted signal. ...
Near Field Far Field ... gain we need to satisfy Overall demodulated signal Recall With all phase shifts due to carrier propagation and synchronization ... Distance ...