Table Of ContentAnywhere-Anytime
Signals and Systems Laboratory
From MATLAB to Smartphones
Second Edition
Synthesis Lectures on Signal
Processing
Editor
JoséMoura,CarnegieMellonUniversity
SynthesisLecturesinSignalProcessingpublishes80-to150-pagebooksontopicsofinterestto
signalprocessingengineersandresearchers.TheLecturesexploitindetailafocusedtopic.Theycan
beatdifferentlevelsofexposition-fromabasicintroductorytutorialtoanadvanced
monograph-dependingonthesubjectandthegoalsoftheauthor.Overtime,theLectureswill
provideacomprehensivetreatmentofsignalprocessing.Becauseofitsformat,theLectureswill
alsoprovidecurrentcoverageofsignalprocessing,andexistingLectureswillbeupdatedbyauthors
whenjustified.
LecturesinSignalProcessingareopentoallrelevantareasinsignalprocessing.Theywillcover
theoryandtheoreticalmethods,algorithms,performanceanalysis,andapplications.SomeLectures
willprovideanewlookatawellestablishedareaorproblem,whileotherswillventureintoabrand
newtopicinsignalprocessing.Bycarefulreviewingthemanuscriptswewillstriveforqualityboth
intheLectures’contentsandexposition.
Anywhere-AnytimeSignalsandSystemsLaboratory:FromMATLABtoSmartphones,
SecondEdition
NasserKehtarnavaz,FatemehSaki,andAdrianDuran
2019
Anywhere-AnytimeSignalsandSystemsLaboratory:fromMATLABtoSmartphones
NasserKehtarnavazandFatemehSaki
2017
Smartphone-BasedReal-TimeDigitalSignalProcessing
NasserKehtarnavaz,ShaneParris,andAbhishekSehgal
2015
AnIntroductiontoKalmanFilteringwithMATLABExamples
NarayanKovvali,MaheshBanavar,andAndreasSpanias
2013
SequentialMonteCarloMethodsforNonlinearDiscrete-TimeFiltering
MarceloG.S.Bruno
2013
iii
ProcessingofSeismicReflectionDataUsingMATLAB™
WailA.MousaandAbdullatifA.Al-Shuhail
2011
Fixed-PointSignalProcessing
WayneT.PadgettandDavidV.Anderson
2009
AdvancedRadarDetectionSchemesUnderMismatchedSignalModels
FrancescoBandiera,DaniloOrlando,andGiuseppeRicci
2009
DSPforMATLAB™andLabVIEW™IV:LMSAdaptiveFiltering
ForesterW.Isen
2009
DSPforMATLAB™andLabVIEW™III:DigitalFilterDesign
ForesterW.Isen
2008
DSPforMATLAB™andLabVIEW™II:DiscreteFrequencyTransforms
ForesterW.Isen
2008
DSPforMATLAB™andLabVIEW™I:FundamentalsofDiscreteSignalProcessing
ForesterW.Isen
2008
TheTheoryofLinearPrediction
P.P.Vaidyanathan
2007
NonlinearSourceSeparation
LuisB.Almeida
2006
SpectralAnalysisofSignals:TheMissingDataCase
YanweiWang,JianLi,andPetreStoica
2006
Copyright©2019byMorgan&Claypool
Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedin
anyformorbyanymeans—electronic,mechanical,photocopy,recording,oranyotherexceptforbriefquotations
inprintedreviews,withoutthepriorpermissionofthepublisher.
Anywhere-AnytimeSignalsandSystemsLaboratory:FromMATLABtoSmartphones,SecondEdition
NasserKehtarnavaz,FatemehSaki,andAdrianDuran
www.morganclaypool.com
ISBN:9781681734491 paperback
ISBN:9781681734507 ebook
ISBN:9781681734514 hardcover
DOI10.2200/S00879ED2V01Y201810SPR015
APublicationintheMorgan&ClaypoolPublishersseries
SYNTHESISLECTURESONSIGNALPROCESSING
Lecture#15
SeriesEditor:JoséMoura,CarnegieMellonUniversity
SeriesISSN
Print1932-1236 Electronic1932-1694
Anywhere-Anytime
Signals and Systems Laboratory
From MATLAB to Smartphones
Second Edition
Nasser Kehtarnavaz, Fatemeh Saki, and Adrian Duran
UniversityofTexasatDallas
SYNTHESISLECTURESONSIGNALPROCESSING#15
M
&C Morgan&cLaypool publishers
ABSTRACT
A typical undergraduate electrical engineering curriculum incorporates a signals and systems
course. The widely used approach for the laboratory component of such courses involves the
utilizationofMATLABtoimplementsignalsandsystemsconcepts.Thisbookpresentsanewly
developedlaboratoryparadigmwhereMATLABcodesaremadetorunonsmartphones,which
most students already possess. This smartphone-based approach enables an anywhere-anytime
platformforstudentstoconductsignalsandsystemsexperiments.Thisbookcoversthelabora-
toryexperimentsthatarenormallycoveredinsignalsandsystemscoursesanddiscusseshowto
run MATLAB codes for these experiments on both Android and iOS smartphones, thus en-
abling a truly mobile laboratory environment for students to learn the implementation aspects
ofsignalsandsystemsconcepts.
Azippedfileofthecodesdiscussedinthebookcanbeacquiredviathewebsitehttp://si
tes.fastspring.com/bookcodes/product/SignalsSystemsBookcodesSecondEdition.
KEYWORDS
smartphone-basedsignalsandsystemslaboratory;anywhere-anytimeplatformfor
signalsandsystemcourses;fromMATLABtosmartphones
vii
Contents
Preface ........................................................... xi
1 IntroductiontoMATLAB............................................1
1.1 StartingMATLAB ............................................... 1
1.1.1 ArithmeticOperations ....................................... 1
1.1.2 VectorOperations ........................................... 5
1.1.3 ComplexNumbers .......................................... 6
1.1.4 ArrayIndexing ............................................. 7
1.1.5 AllocatingMemory.......................................... 8
1.1.6 SpecialCharactersandFunctions............................... 8
1.1.7 ControlFlow............................................... 9
1.1.8 ProgramminginMATLAB .................................. 11
1.1.9 SoundGeneration.......................................... 12
1.1.10LoadingandSavingData .................................... 13
1.1.11ReadingWaveandImageFiles................................ 13
1.1.12SignalDisplay ............................................. 14
1.2 MATLABProgrammingExamples ................................. 14
1.2.1 SignalGeneration .......................................... 14
1.2.2 GeneratingaPeriodicSignal ................................. 17
1.3 LabExercises ................................................... 18
2 SoftwareDevelopmentTools ........................................21
2.1 AndroidToolsInstallationSteps .................................... 21
2.1.1 JavaJDK ................................................. 21
2.1.2 AndroidStudioBundleandNativeDevelopmentKit.............. 22
2.1.3 AndroidStudioSetupWizard ................................ 23
2.1.4 AndroidEmulatorConfiguration.............................. 25
2.1.5 GettingFamiliarwithAndroidSoftwareTools................... 31
2.2 iOSToolsInstallationSteps ....................................... 39
2.2.1 IphoneAppDevelopmentwithXcode.......................... 41
2.2.2 Setting-UpAppEnvironment ................................ 43
2.2.3 CreatingLayout ........................................... 44
viii
2.2.4 ImplementingCCodes...................................... 45
2.2.5 ExecutingCCodesViaObjective-C ........................... 46
2.2.6 iOSAppDebugging........................................ 46
3 FromMATLABCodertoSmartphone ................................49
3.1 MATLABFunctionDesign ....................................... 49
3.2 GeneratingSignalsviaMATLABonSmartphones..................... 51
3.2.1 TestBench................................................ 52
3.2.2 CCodeGeneration......................................... 52
3.2.3 SourceCodeIntegration..................................... 54
3.3 RunningMATLABCoder-GeneratedCCodesonSmartphones ......... 57
3.3.1 RunningonAndroidSmartphones ............................ 57
3.3.2 RunningoniOSSmartphones ................................ 60
3.4 References...................................................... 63
4 LinearTime-InvariantSystemsandConvolution .......................65
4.1 ConvolutionandItsNumericalApproximation ........................ 65
4.2 ConvolutionProperties ........................................... 66
4.3 ConvolutionExperiments ......................................... 67
4.4 LabExercises ................................................... 91
4.4.1 EchoCancellation.......................................... 91
4.4.2 NoiseReductionUsingMeanFiltering ......................... 95
4.4.3 ImpulseNoiseReductionUsingMedianFiltering ................ 96
4.5 RunningMATLABCoder-GeneratedCCodesonSmartphones ......... 96
4.5.1 RunningonAndroidSmartphones ............................ 96
4.5.2 RunningoniOSSmartphones ................................ 99
4.6 Real-TimeRunningonSmartphones ............................... 101
4.6.1 MATLABFunctionDesign................................. 101
4.6.2 TestBench............................................... 102
4.6.3 ModifyingReal-TimeShellforAndroid ....................... 103
4.6.4 ModifyingReal-TimeShellforiOS........................... 111
4.7 Real-TimeLabs ................................................ 115
4.7.1 AndroidSteps ............................................ 115
4.7.2 iOSSteps................................................ 118
4.7.3 AndroidSteps ............................................ 122
4.7.4 iOSSteps................................................ 122
4.8 References..................................................... 125
ix
5 FourierSeries ....................................................127
5.1 FourierSeriesNumericalComputation ............................. 128
5.2 FourierSeriesandItsApplications ................................. 129
5.3 LabExercises .................................................. 143
5.3.1 RLCircuitAnalysis ....................................... 143
5.3.2 DopplerEffect............................................ 144
5.3.3 SynthesisofElectronicMusic ............................... 144
5.4 Real-TimeLabs ................................................ 147
5.4.1 AndroidSteps ............................................ 147
5.4.2 iOSSteps................................................ 152
5.4.3 AndroidSteps ............................................ 155
5.4.4 iOSSteps................................................ 160
5.5 References..................................................... 167
6 Continuous-TimeFourierTransform ................................169
6.1 CTFTandItsProperties......................................... 169
6.2 NumericalApproximationsofCTFT............................... 170
6.3 EvaluatingPropertiesofCTFT ................................... 170
6.4 LabExercises .................................................. 203
6.4.1 CircuitAnalysis........................................... 203
6.4.2 TheDopplerEffect ........................................ 204
6.4.3 DiffractionofLight ....................................... 206
6.5 Real-TimeLabs ................................................ 207
6.5.1 AndroidSteps ............................................ 207
6.5.2 iOSSteps................................................ 211
6.5.3 AndroidSteps ............................................ 216
6.5.4 iOSSteps................................................ 221
6.6 References..................................................... 224
7 DigitalSignalsandTheirTransforms.................................227
7.1 DigitalSignals ................................................. 227
7.1.1 SamplingandAliasing ..................................... 227
7.1.2 Quantization ............................................. 231
7.1.3 A/DandD/AConversions.................................. 231
7.1.4 DTFTandDFT.......................................... 233
7.2 Analog-to-DigitalConversion,DTFT,andDFT ..................... 237
x
7.3 LabExercises .................................................. 255
7.3.1 Dithering................................................ 255
7.3.2 ImageProcessing.......................................... 256
7.3.3 DTMFDecoder .......................................... 256
7.4 References..................................................... 256
Authors’Biographies ..............................................257
Index ...........................................................259
