communication and arts course
Digital Communications I: Modulation and Coding Course
... bandwidth constraintNyquist bandwidth constraint:The theoretical minimum required system bandwidth to detect Rs [symbols/s] without ISI is Rs/2 [Hz]. Equivalently, a system with bandwidth ... filterEqualizingfilterThreshold comparisonFor bandpass signalsCompensation for channel induced ISIBaseband pulse(possibly distored)Sample(test statistic)Baseband pulseReceived waveformStep 1 – ... [symbols/s] without ISI.Bandwidth efficiency, R/W [bits/s/Hz] : An important measure in DCs representing data throughput per hertz of bandwidth.Showing how efficiently the bandwidth resources...
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Modulation and coding course- lecture 10
... techniques.Convolutional codes are based on construction techniques.Digital Communications I:Modulation and Coding Course Period 3 - 2007Catharina LogothetisLecture 10Lecture 10 7A Rate ½ ... truncation).is a machine with memory.This fundamental difference in approach imparts a different nature to the design and evaluation of the code.Block codes are based on algebraic/combinatorial ... we talked about:Channel codingLinear block codesThe error detection and correction capabilityEncoding and decodingHamming codesCyclic codesLecture 10 11Encoder representationVector...
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Modulation and coding course- lecture 9
... 7Why using error correction coding?Error performance vs. bandwidthPower vs. bandwidthData rate vs. bandwidthCapacity vs. bandwidth (dB) /0NEbBPAFBDCEUncodedCodedCoding ... received polynomial by the generator polynomial. With syndrome and Standard array, error is estimated.In Cyclic codes, the size of standard array is considerably reduced. )()()( XXX eUr +=Received ... detection and correction codesLecture 9 28Linear block codes – cont’dStandard array For row , find a vector in of minimum weight which is not already listed in the array. Call this pattern and...
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Modulation and coding course- lecture 12
... NLDNLDNLDNLDLNLDNLDTOne path with weight 5, length 3 and data weight of 1 One path with weight 6, length 4 and data weight of 2 One path with weight 5, length 5 and data weight of 2 Lecture 12 7The Viterbi ... provides the decoder with a measure of confidence for the decision.Digital Communications I:Modulation and Coding Course Period 3 - 2007Catharina LogothetisLecture 12 ... between each of the codewords and the all-zero codeword.This is the minimum distance in the set of all arbitrary long paths along the trellis that diverge and remerge to the all-zero path.It...
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Modulation and coding course- lecture 11
... up:For a data block of L bits, form the trellis. The trellis has L+K-1 sections or levels and starts at time and ends up at time .Label all the branches in the trellis with their corresponding ... metric1/3-4/35/35/3-5/3Lecture 11 15Soft and hard decisionsIn hard decision: The demodulator makes a firm or hard decision whether one or zero is transmitted and provides no other information ... metric entering each state at time . Keep the survivor path and delete the dead paths from the trellis.1. If , increase by 1 and return to step 2. A. Start at state zero at time . Follow...
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Modulation and coding course- lecture 1
... UserLecture 1 25Bandwidth of signal …Different definition of bandwidth:a) Half-power bandwidthb) Noise equivalent bandwidthc) Null-to-null bandwidtha) Fractional power containment bandwidthb) ... ergodic in mean and autocorrelation, if and , respectively.Lecture 1 7Practical information Course material Course text book: “Digital communications: Fundamentals and Applications” ... 6Scope of the course …Learning fundamental issues in designing a digital communication system (DCS):Utilized techniquesFormatting and source codingModulation (Baseband and bandpass signaling)Channel...
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Modulation and coding course- lecture 2
... features of digital communication systemsSome basic concepts and definitions as signal classification, spectral density, random process, linear systems and signal bandwidth.Lecture 2 7Aliasing ... comparing and selecting PCM waveforms:Spectral characteristics (power spectral density and bandwidth efficiency)Bit synchronization capabilityError detection capabilityInterference and ... variance:2Sat2Lin222)()(})]({[σσσ+==−=∫∞∞−dxxpxexqxqEllLllqxpq)(12212/022Lin∑−==σUniform q.1222Linq=σDigital Communications I:Modulation and Coding Course Period 3 – 200/Catharina LogothetisLecture 2Lecture 2 18PCM waveformsPCM...
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Tài liệu AIRBUS UKCATIA V5 and Foundation Course Sketcher docx
... and highlight the Definition elements.This command can be used to intersect with 3D-wireframe geometry, Solids and Surfaces.SelectedelementsSketchelementsAIRBUS UK CATIA V5 Foundation Course DMS42188 ... not active a new part will be activated and you will be prompted toenter a part name by following panel on the desktop. Enter a name and click on OK and a new CATPart will open.Note: If the ... the Tangent Arc icon and click to indicate the end of the arc.2. Click and dragging the mouse pointer in the direction you wish the arc to appear,then release the button and the sketch tool...
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Tài liệu Modulation and coding course- lecture 3 pptx
... modulationLecture 3 13Baseband and bandpass Bandpass model of detection process is equivalent to baseband model because: The received bandpass waveform is first transformed to a baseband waveform. ... Performing bandpass linear signal processing followed by heterodying the signal to the baseband, yields the same results as heterodying the bandpass signal to the baseband , followed by a baseband ... Gaussian random process (Gaussian Noise) Inter-Symbol Interference (ISI) Due to the filtering effect of transmitter, channel and receiver, symbols are “smeared”. FormatPulse modulateBandpassmodulateFormat...
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Tài liệu Modulation and coding course- lecture 4 pdf
... tTstrzii−∗=∗Mi , ,1=), ,,())(), ,(),((2121 MMzzzTzTzTz==zDigital Communications I: Modulation and Coding Course Period 3 - 2007Catharina LogothetisLecture 4Lecture 4 11Signal space ... filterEqualizingfilterThreshold comparisonFor bandpass signalsCompensation for channel induced ISIBaseband pulse(possibly distored)Sample(test statistic)Baseband pulseReceived waveformStep 1 – ... A01s2sTATA−00Tt)(1tψT100)()()()()()()(),(/)(/)()()(12201212111102211=−−=−=>=<====∫∫tAtstdAdtttsttsAtsEtstAdttsETTψψψψ12Lecture 4 3Receiver job Demodulation and sampling: Waveform recovery and preparing the received signal for detection: Improving the signal power...
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Tài liệu Modulation and coding course- lecture 5 doc
... PAMTt)(1tψT10Digital Communications I: Modulation and Coding Course Period 3 - 2007Catharina LogothetisLecture 5Lecture 5 20Eb/No figure of merit in digital communications SNR or S/N ... noise vector are i.i.d Gaussian random variables with zero-mean and variance . The noise vector pdf is The elements of observed vector are independent Gaussian random variables. Its pdf is), ... liesPr()()(1)(iciemPmP−=imisziZsent) and ˆPr()(iiiemmmmP≠=Lecture 5 16Union bound Let denote that the observation vector is closer to the symbol vector than , when is transmitted. depends only on and . Applying...
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Tài liệu Sustainability Communications A Toolkit for Marketing and Advertising Courses doc
... The economic and social context for sustainability communications 1. CSR and communication : regulation, controls and voluntary initiatives a) Definitions: legalistic and voluntaristic ... marketing, advertising and communication actors. It should provide an understanding of the context and practices leading companies and public institutions to use sustainability communications as ... bibliography on Communications and sustainable development 39 c) Specific constraints for communication and marketing: ethical and operational principles Legal constraints on communication, ...
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DEPARTMENT OF ECONOMICS AND FINANCE UNDERGRADUATE AND POSTGRADUATE COURSES pot
... algebra, calculus and statistics: simple and compound interest, inflation and taxes; annuities and pensions; amortisation and mortgages; insurance; credit cards; stocks, bonds and risk. Prequisites: ... ECONOMICS AND FINANCE 4THE DEPARTMENT 5LOCATION AND CONTACT DETAILS OF THE DEPARTMENT OF ECONOMICS AND FINANCE 5Where is the Department of Economics and Finance? 5Where do I get help with course ... is in two parts: Part I: Eight courses or equivalent from FINC 600-level courses. This is equivalent to the honours year. Courses from other subjects may be substituted for FINC courses where...
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Communication and Natural Resource Management pdf
... be recognised and influenced.This need to understand the surrounding context applies to communication theory and method as much as it applies to the communities and people that communication ... collapsingtelecommunications infrastructures can utilise cell phones, microwave and satellitetechnologies, to upgrade and more affordably replace old systems, and provide phone and Internet service ... connectivity access and high costs; ascarcity of skilled ICT labour; and a lack of local content creation and applications (lan-guage and software) hinder ICT appropriation by poor nations and by poor...
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WORKING PAPER SERIES NO 898 / MAY 2008: CENTRAL BANK COMMUNICATION AND MONETARY POLICY A SURVEY OF THEORY AND EVIDENCE doc
... Jeffery D., Stephen Morris, and Hyun Song Shin. 2002. Communication and Monetary Policy.” Oxford Review of Economic Policy, 18(4): 495-503. Andersson, Malin, Hans Dillén, and Peter Sellin. 2006. ... in Australia, Canada, New Zealand, and Sweden, but not in the United Kingdom. Another approach, adopted in Johnson (2002) and in Andrew Levin, Fabio Natalucci, and Jeremy Piger (2004), compares ... England communications. In particular, the release of the MPC minutes and the Bank’s Inflation Reports seem to move financial markets significantly.27 But just like Kohn and Sack, Reeves and...
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