digital signal processing by ramesh babu ppt

Tài liệu Digital Signal Processing Handbook P69 ppt

... beamforming processing channel that has the followingcapabilities:ã Combine the multipath arrivals generated by its assigned mobile.ã Cancel all the arrivals generated by other mobiles.c1999 by ... Trans. on Signal Processing, submitted Nov. 1995.[2] Barroso, V.A.N. and Moura, J.M.F.,l2andl1Beamformers: recursive implementation andperformance analysis,IEEE Trans. on Signal Processing, SP-42(6), ... Arrivals in Mobile Communications” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC Press LLC, 1999c1999byCRCPressLLC that, in the more general...

Tài liệu Digital Signal Processing Handbook P63 ppt

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... array signal processing in thebeamspace domain for low-angle radar tracking,IEEE Trans. Signal Processing, 39, 656–671,Mar. 1991.[27] Zoltowski, M.D. and Stavrinides, D., Sensor array signal processing ... via Unitary ESPRIT,IEEE Trans. Signal Processing, 44, 316–328, Feb. 1996.[25] Zoltowski, M.D.,Kautz,G.M.andSilverstein,S.D.,Beamspaceroot-MUSIC,IEEETrans .Signal Processing, 41, 344–364, Jan. ... ESPRIT,IEEETrans. Signal Processing, 40, 867–881, Apr. 1992.[23] Xu, G., Roy, R.H. and Kailath, T., Detection of number of sources via exploitation of centro-symmetry property,IEEE Trans. Signal Processing, 42,...

Tài liệu Digital Signal Processing Handbook P62 ppt

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... Detection of signals by information theoretic criteria,IEEE Trans. onAcoustics, Speech, Signal Processing, ASSP-33(2), 387–392, Apr. 1985.[37] Wax, M., Detection and estimation of superimposed signals, ... moments of the signal s(t) areE{sisj∗sksl∗} 1 ≤ i, j, k, l ≤ Pc1999 by CRC Press LLC Gonen, E. & Mendel, J.M. “Subspace-Based Direction Finding Methods” Digital Signal Processing ... canc1999 by CRC Press LLC a received signal for an array illuminated by picoherent signals having a steering matrix Ai, andcovariance matrix cicHi. The DOAs could then be solved for by using...

Tài liệu Digital Signal Processing Handbook P18 pptx

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... computed. The output signal iscompared to a second signal d(n), called the desired response signal, by subtracting the two samplesat time n. This difference signal, given by e(n) = d(n) − y(n) ... experiment.c1999 by CRC Press LLC Douglas, S.C. “Introduction to Adaptive Filters” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC Press LLC, 1999c1999byCRCPressLLC ... adaptive filter is defined by four aspects:1. the signals being processed by the filter2. the structure that defines how the output signal of the filter is computed from its input signal 3. the parameters...

Tài liệu Digital Signal Processing Handbook P16 pptx

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... models of stationary random processes, whether signal or noise, have been foundto be useful in a wide variety of signal processing tasks such as signal detection, estimation, filtering,and classification, ... function)arediscussedto complete the discussion of model fitting.c1999 by CRC Press LLC Tugnait, J.K. “Validation, Testing, and Noise Modeling” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas ... minimum description length (MDL) criterion is given by MDL(M) =−2lnfθ(M)(X) + M ln N.(16.30)c1999 by CRC Press LLC [17] Kassam, S.A., Signal Detection in Non-Gaussian Noise,Springer-Verlag,...

Tài liệu Real time digital signal processing P1 pptx

Danh mục: Điện - Điện tử

... REAL-TIME DIGITAL SIGNAL PROCESSING 1Introduction to Real-Time Digital Signal Processing Signals can be divided into three categories ± continuous-time (analog) signals,discrete-time signals, and digital ... Figure 1.1, where a real-world analog signal is converted to a digital signal, processed by DSP hardware in2INTRODUCTION TO REAL-TIME DIGITAL SIGNAL PROCESSING (a)(b)Figure 1.16 Connect ... design and implement digital systems for processing digital signals using digital hardware. However, the analysisof such signals and systems usually uses discrete-time signals and systems for...

Tài liệu Digital Signal Processing Handbook P32 pptx

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... s(n))2(32.35)where s(n) is the input speech signal and y(n) is the output speech signal. The two signals aresufﬁciently staggered to account for the delay in the processing. The signal- to-noise-ratios were ... thesemethods demand a lot of memory and processing power. RAP operates on only one row at a time,which makes it a useful sample -by- sample method in adaptive signal processing. Further, the matrixA ... 3]. In [2], the minimum phase component was estimated by zeroing out the cepstrum fornegativefrequencies. Thentheoutputsignalwasﬁlteredbythe inverseofthe minimum phasetransferfunction. But...

Tài liệu Digital Signal Processing Handbook P26 pptx

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... theresultingestimatemaybeinferiortothatprovidedbyatransformmethod. The recent literature has demonstrated that usually there are models that make the efficacyof a reconstruction provided by a series expansion method ... functions and the accuracy of FBP is significantly worse than what isobtained by this very early iterate produced by ART.Since the iterative process is, in practice, stopped early, in evaluating ... TheReconstructionProblemWewanttosolvethefollowinggeneralproblem.Thereisathree-dimensionalstructurewhoseinternalcompositionisunknowntous.Wesubjectthisstructuretosomekindofradiation,eitherbytransmittingtheradiationthroughthestructureorbyintroducingtheemitteroftheradiationintothestructure.Wemeasuretheradiationtransmittedthroughoremittedfromthestructureatanumberofpoints.Computedtomography(CT)istheprocessofobtainingfromthesemeasurementsthedistributionofthephysicalparameter(s)insidethestructurethathaveaneffectonthemeasurements.Theproblemoccursinawiderangeofareas,suchasx-rayCT,emissiontomography,photonmigrationimaging,andelectronmicroscopicreconstruction;see,e.g.,[1,2].Alloftheseareinverseproblemsofvarioussorts;see,e.g.,[3].Whereitisnototherwisestated,wewillbediscussingthespecialreconstructionproblemofestimatingafunctionoftwovariablesfromestimatesofitslineintegrals.Asitisquitereasonableforanyapplication,wewillassumethatthedomainofthefunctioniscontainedinafiniteregionoftheplane.Inwhatfollowswewillintroducealltheneedednotationandterminology;inmostcasestheseagreewiththoseusedin[1].c1999byCRCPressLLC...

Tài liệu Digital Signal Processing Handbook P25 pptx

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... asf†=HTH−1HTg = H†g,(25.32)c1999 by CRC Press LLC Podilchuk, C. Signal Recovery from Partial Information” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas ... not able to resolve the signal estimatebeyond the diffraction limit imposed by the physical measuring device.The observed signal is degraded from the original signal by both the measuring device ... of signal recovery by examining a one-dimensional, linear, time-invariantsystem that can be expressed asg(x) =+T−Tf (α)h(x − α)dα,(25.7)whereg(x)istheobservedsignal, f(α)isthe desiredsignal...

Tài liệu Real time digital signal processing P3 ppt

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... Elementary Digital SignalsThere are several ways to describe signals. For example, signals encountered in com-munications are classified as deterministic or random. Deterministic signals are ... 3.1.3, a digital system can be completely characterized by itsimpulse response hn. Consider a digital system illustrated in Figure 3.8, where xn isthe input signal and yn is the output signal. ... equation of the digital systemexpressed asynbxnÀayn À 1, 3:2:16where each output signal yn is dependent on the current input signal xn and theprevious output signal yn À 1....

Tài liệu Real Time Digital Signal Processing pptx

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... REAL-TIME DIGITAL SIGNAL PROCESSING 1Introduction to Real-Time Digital Signal Processing Signals can be divided into three categories ± continuous-time (analog) signals,discrete-time signals, and digital ... design and implement digital systems for processing digital signals using digital hardware. However, the analysisof such signals and systems usually uses discrete-time signals and systems for ... term `discrete-time' and `digital& apos; inter-changeably. Digital signal processing (DSP) is concerned with the digital representation of signalsand the use of digital hardware to analyze,...

Tài liệu Digital Signal Processing Handbook P42 ppt

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... on Applications of Signal Processing to Audio and Acoustics,1989.[17] Sinha,D.andTewfik,A.H.,Lowbitratetransparentaudiocompressionusingadaptedwavelets,IEEE Trans. Signal Processing, 41(12), ... triviallytothebinauralcase. Specifically, evenifonesignalismaskedbyboththeL (left)andR (right)signalsindividually, it may not be masked when the L and R signals are presented binaurally. For furtherdetails, ... 34(5), 1986.c1999 by CRC Press LLC 1. Analysis filterbank —The filterbank converts thetime domain audiosignal totheshort-term frequency domain. Each block is selectablycodedby1024or 128 uniformly...

Tài liệu Digital Signal Processing Handbook P41 ppt

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... by CRC Press LLC Davidson, G.A. Digital Audio Coding: Dolby AC-3” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC Press LLC, 1999c1999byCRCPressLLC ... been reduced by more thana factor of 13 by the AC- 3digital compression. The signal received from the satellite is demodulatedback into the 384 kbps serial bit stream, and decoded by the AC-3 ... 2−e(i). Frequency coefﬁcients are normalizedin the encoder by multiplying by 2e(i), and denormalized in the decoder by multiplying by 2−e(i).Exponent values are allowed to range from0 (for...

Tài liệu Digital Signal Processing Handbook P40 pptx

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... packetstructureuses188-bytepackets consisting of a 4-byte header followed by 184 bytes of payload (see Fig. 40.14). The headerFIGURE 40.14: MPEG packet delivery.includesasyncbyte,a13-bitfieldcalledpacketidentifiertoinformthedecoderaboutthetypeofdata,and ... standards by down-mixing the 7-channel sig nal into a 5-channel signal, and a subsequentdown-mixingofthelatteroneintoa2-channelsignal[55]. The2-channelsignal, threecontributionsfromthe 5-channel signal, ... of digital audio systems [54].Lower bit rates than those given by the 16-bit PCM format are mandatory if audio signals areto be stored efficiently on storage media—although the upcoming digital...