Download or read book Delta Modulation Incorporating Integrated Circuits a Feasibility Study written by William Burns Waff and published by . This book was released on 1969 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulse-modulation and integrated circuits, respectively, are the most recent major advances in the communications field and in electronic devices. The evolutionary development of one pulse-modulation technique, Delta Modulation, is examined in this thesis to determine the feasibility of extending its evolution to the inclusion of integrated circuits in its design. An experimental circuit, demonstrating this feasibility, is described and evaluated. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compilation of Abstracts of Dissertations Theses and Research Papers Submitted by Candidates for Degrees written by Naval Postgraduate School (U.S.) and published by . This book was released on 1969 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Circuits and Systems Based on Delta Modulation written by Djuro G. Zrilic and published by Springer Science & Business Media. This book was released on 2005-04-07 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delta Modulation Systems.- Some Existing Approaches of Linear Arithmetic Operations on Binary Delta Modulated Pulse Stream.- Basic Ternary Logic Circuits.- Arithmetic Operations on Multi-Valued Delta Modulation Systems.- Nonlinear Arithmetic Operations on Delta Modulated Pulse Stream.- Mixed Processing of Delta Modulated Pulse Stream.- Decoding of First Order Delta-Sigma Sequences.- PCM - Delta-Sigma-Mu Converters.- Stochastic Processing using Delta-Sigma-Mu.- Measurements Based on Delta Modulation.- Delta-Sigma Compander Circuits
Download or read book Master s Theses and Doctoral Dissertations in the Pure and Applied Sciences written by and published by . This book was released on 1972 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States written by and published by . This book was released on 1971 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Development Reports written by and published by . This book was released on 1970 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1970 with total page 1332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Demonstration of the Feasibility of Using Delta Modulation for Pictorial Transmission written by ROBERT V. COTTON and published by . This book was released on 1962 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extensive investigation of delta modulation techniques for encoding pictorial data was made. The objective was to determine the parameters of delta modulation systems for various image communication applications by (1) system analysis, (2) computer simulation, and (3) experimentation. The analysis of delta modulation techniques includes one-bit and two-bit systems with both linear and exponential integration. Computer simulations of delta modulation logics conducted were (1) one-bit with linear and exponential integration, (2) two-bit with linear and exponential integration, and (3) most importantly, data-link noise with mentioned systems and also pcm. Images of these simulations are presented for evaluation. An experimental two-bit delta modulation encoder with a sampling rate of 50 mc was constructed and tested. A table of the key parameters of pcm and delta modulation systems is presented. Using this table and the images, the image communication system designer can readily choose the best technique and combination of parameters to fulfill his particular application. (Author).
Download or read book Government Reports Index written by and published by . This book was released on 1970 with total page 1344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Demonstration of the Feasibility of Using Delta Modulation for Pictorial Tranmission written by and published by . This book was released on 1963 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extensive investigation of delta modulation techniques for encoding pictorial data was made to determine the parameters of delta modulation systems for various image communication applica tions by system analysis computer simulation, and experimentation. The analysis and computer sim ulation included one-bit and two-bit systems with linear integration, double linear integra tion with prediction, and exponential integra tion. A feasibility model of a 25-mc two-bit exponential integration delta modulation encoding and decoding system with a serial bit rate of 100 mpps was designed, constructed, and tested. A table of the key parameters of PCM and delta modulation encoding systems, based upon the anal ysis, simulation, and implementation, is present ed. It is concluded that for a typical image communication system, two-bit delta modulation with exponential integration and sampling at two to three times the information bandwidth repre sents the best compromise of parameter. The re sultant compaction over six-bit PCM is two to three.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1982 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements written by and published by . This book was released on 1972 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1979-08 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bell Laboratories Talks and Papers written by Bell Telephone Laboratories, inc. Libraries and Information Systems Center and published by . This book was released on 1970 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1970 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of VCO based ADCs written by Vishnu Unnikrishnan and published by Linköping University Electronic Press. This book was released on 2017-03-28 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's complex electronic systems with billions of transistors on a single die are enabled by the aggressive scaling down of the device feature size at an exponential rate as predicted by the Moore's law. Digital circuits benefit from technology scaling to become faster, more energy efficient as well as more area efficient as the feature size is scaled down. Moreover, digital design also benefits from mature CAD tools that simplify the design and cross-technology porting of complex systems, leveraging on a cell-based design methodology. On the other hand, the design of analog circuits is getting increasingly difficult as the feature size scales down into the deep nanometer regime due to a variety of reasons like shrinking voltage headroom, reducing intrinsic gain of the devices, increasing noise coupling between circuit nodes due to shorter distances etc. Furthermore, analog circuits are still largely designed with a full custom design ow that makes their design and porting tedious, slow, and expensive. In this context, it is attractive to consider realizing analog/mixed-signal circuits using standard digital components. This leads to scaling-friendly mixed-signal blocks that can be designed and ported using the existing CAD framework available for digital design. The concept is already being applied to mixed-signal components like frequency synthesizers where all-digital architectures are synthesized using standard cells as basic components. This can be extended to other mixed-signal blocks like digital-to-analog and analog to- digital converters as well, where the latter is of particular interest in this thesis. A voltage-controlled oscillator (VCO)-based analog-to-digital converter (ADC) is an attractive architecture to achieve all-digital analog-to digital conversion due to favorable properties like shaping of the quantization error, inherent anti-alias filtering etc. Here a VCO operates as a signal integrator as well as a quantizer. A converter employing a ring oscillator as the VCO lends itself to an all-digital implementation. In this dissertation, we explore the design of VCO-based ADCs synthesized using digital standard cells with the long-term goal of achieving high performance data converters built from low accuracy switch components. In a first step, an ADC is designed using vendor supplied standard cells and fabricated in a 65 nm CMOS process. The converter delivers an 8-bit ENOB over a 25 MHz bandwidth while consuming 3.3 mW of power resulting in an energy efficiency of 235 fJ/step (Walden FoM). Then we utilize standard digital CAD tools to synthesize converter designs that are fully described using a hardware description language. A polynomial-based digital post-processing scheme is proposed to correct for the VCO nonlinearity. In addition, pulse modulation schemes like delta modulation and asynchronous sigma-delta modulation are used as a signal pre-coding scheme, in an attempt to reduce the impact of VCO nonlinearity on converter performance. In order to investigate the scaling benefits of all-digital data conversion, a VCO-based converter is designed in a 28 nm CMOS process. The design delivers a 13.4-bit ENOB over a 5 MHz bandwidth achieving an energy efficiency of 4.3 fJ/step according to post-synthesis schematic simulation, indicating that such converters have the potential of achieving good performance in deeply scaled processes by exploiting scaling benefits. Furthermore, large conversion errors caused by non-ideal sampling of the oscillator phase are studied. An encoding scheme employing ones counters is proposed to code the sampled ring oscillator output into a number, which is resilient to a class of sampling induced errors modeled by temporal reordering of the transitions in the ring. The proposed encoding reduces the largest error caused by random reordering of up to six subsequent bits in the sampled signal from 31 to 2 LSBs. Finally, the impact of process, voltage, and temperature (PVT) variations on the performance while operating the converter from a subthreshold supply is investigated. PVT-adaptive solutions are suggested as a means to achieve energy-efficient operation over a wide range of PVT conditions.
