Design of Power-Efficient Highly Digital Analog-to-Digital Converters for Next-Generation Wireless Communication Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Design of Power-Efficient Highly Digital Analog-to-Digital Converters for Next-Generation Wireless Communication Systems write by Xinpeng Xing. This book was released on 2017-10-04. Design of Power-Efficient Highly Digital Analog-to-Digital Converters for Next-Generation Wireless Communication Systems available in PDF, EPUB and Kindle. This book discusses both architecture- and circuit-level design aspects of voltage-controlled-oscillator (VCO)-based analog-to-digital converters (ADCs), especially focusing on mitigation of VCO nonlinearity and the improvement of power efficiency. It shows readers how to develop power-efficient complementary-metal-oxide-semiconductor (CMOS) ADCs for applications such as LTE, 802.11n, and VDSL2+. The material covered can also be applied to other specifications and technologies. Design of Power-Efficient Highly Digital Analog-to-Digital Converters for Next-Generation Wireless Communication Systems begins with a general introduction to the applications of an ADC in communications systems and the basic concepts of VCO-based ADCs. The text addresses a wide range of converter architectures including open- and closed-loop technologies. Special attention is paid to the replacement of power-hungry analog blocks with VCO-based circuits and to the mitigation of VCO nonline arity. Various MATLAB®/Simulink® models are provided for important circuit nonidealities, allowing designers and researchers to determine the required specifications for the different building blocks that form the systematic integrated-circuit design procedure. Five different VCO-based ADC design examples are presented, introducing innovations at both architecture and circuit levels. Of these designs, the best power efficiency of a high-bandwidth oversampling ADC is achieved in a 40 nm CMOS demonstration. This book is essential reading material for engineers and researchers working on low-power-analog and mixed-signal design and may be used by instructors teaching advanced courses on the subject. It provides a clear overview and comparison of VCO-based ADC architectures and gives the reader insight into the most important circuit imperfections.
Low-Power High-Resolution Analog to Digital Converters
Low-Power High-Resolution Analog to Digital Converters - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Low-Power High-Resolution Analog to Digital Converters write by Amir Zjajo. This book was released on 2010-10-29. Low-Power High-Resolution Analog to Digital Converters available in PDF, EPUB and Kindle. With the fast advancement of CMOS fabrication technology, more and more signal-processing functions are implemented in the digital domain for a lower cost, lower power consumption, higher yield, and higher re-configurability. This has recently generated a great demand for low-power, low-voltage A/D converters that can be realized in a mainstream deep-submicron CMOS technology. However, the discrepancies between lithography wavelengths and circuit feature sizes are increasing. Lower power supply voltages significantly reduce noise margins and increase variations in process, device and design parameters. Consequently, it is steadily more difficult to control the fabrication process precisely enough to maintain uniformity. The inherent randomness of materials used in fabrication at nanoscopic scales means that performance will be increasingly variable, not only from die-to-die but also within each individual die. Parametric variability will be compounded by degradation in nanoscale integrated circuits resulting in instability of parameters over time, eventually leading to the development of faults. Process variation cannot be solved by improving manufacturing tolerances; variability must be reduced by new device technology or managed by design in order for scaling to continue. Similarly, within-die performance variation also imposes new challenges for test methods. In an attempt to address these issues, Low-Power High-Resolution Analog-to-Digital Converters specifically focus on: i) improving the power efficiency for the high-speed, and low spurious spectral A/D conversion performance by exploring the potential of low-voltage analog design and calibration techniques, respectively, and ii) development of circuit techniques and algorithms to enhance testing and debugging potential to detect errors dynamically, to isolate and confine faults, and to recover errors continuously. The feasibility of the described methods has been verified by measurements from the silicon prototypes fabricated in standard 180nm, 90nm and 65nm CMOS technology.
Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits
Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits write by Andrea Baschirotto. This book was released on 2019-10-24. Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits available in PDF, EPUB and Kindle. This book is based on the 18 tutorials presented during the 28th workshop on Advances in Analog Circuit Design. Expert designers present readers with information about a variety of topics at the frontier of analog circuit design, including next-generation analog-to-digital converters , high-performance power management systems and technology considerations for advanced IC design. For anyone involved in analog circuit research and development, this book will be a valuable summary of the state-of-the-art in these areas. Provides a summary of the state-of-the-art in analog circuit design, written by experts from industry and academia; Presents material in a tutorial-based format; Includes coverage of next-generation analog-to-digital converters, high-performance power management systems, and technology considerations for advanced IC design.
6G and Onward to Next G
6G and Onward to Next G - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook 6G and Onward to Next G write by Martin Maier. This book was released on 2023-02-07. 6G and Onward to Next G available in PDF, EPUB and Kindle. This book weaves emerging themes in future 6G and Next G networks carefully together. It points to three spheres of contexts with different narratives for the year 2030 and beyond, in which the coming Metaverse as the precursor of the future Multiverse can be embedded naturally. The book aims at providing the reader with new cross-disciplinary research material, ranging from communication and computer science to cognitive science, social sciences, and behavioral economics, for building a deeper Metaverse. It will be instrumental in helping the reader find and overcome some of the most common 6G and Next G blind spots. Modern networks are more than communication and computer science. They may be better viewed as techno-social systems that exhibit complex adaptive system behavior and resemble biological superorganisms. 6G and especially Next G should go beyond continuing the linear incremental 6G=5G+1G mindset of past generations of mobile networks. To this end, the book: Helps readers inquire into new areas of knowledge or understanding that they didn’t have or didn't pay attention to find their 6G/Next G blind spots Highlights the unique potential benefits of the virtual world for society in that it provides a useful extension of the real-world economy by compensating for its well-known market failures, e.g., rising income inequality Provides a comprehensive description of the original Metaverse vision and highlights the different Metaverse components, applications, open research challenges, and early Metaverse deployment examples from both industry and academia Describes how the Multiverse goes beyond the Metaverse origins and explores the importance of experience innovation since experiences play a central role in the Metaverse Explains Web3 and the emerging field of token engineering and tokenization, i.e., the process of creating tokenized digital twins via programmable tokens, which are viewed as the killer application of Web3 networks for creating technology-enabled social organisms and restoring tech-driven common goods Reviews anticipated 6G paradigm shifts and elaborates on the difference between 6G and Next G research, including Next G Alliance's audacious goals and their symbiotic relationship between technology and a population's societal and economic needs Doubles down on the mutually beneficial symbiosis between digitalization and biologization for our possible evolution into future metahumans with infinite capabilities by making us smarter and creating a fundamentally new form of sociality in the Metaverse and Multiverse as well as the future stigmergy enhanced Society 5.0 by leveraging on time-tested self-organization mechanisms borrowed from nature Presents a variety of different concepts of the true nature of reality that bring us closer to the original Metaverse vision and explains how 6G, Next G, and the Metaverse may eventually pave the way to the peak-experience machine that democratizes access to the upper range of human experiences Touches on the possible transition from communication to services beyond communication, most notably the cross-cultural phenomenon of communitas in anthropology and its increasing degrees of perceived connectedness with others, the world, and oneself, given the importance of creating a deep sense of community in the Metaverse Written for students, network researchers, professionals, engineers, and practitioners, 6G and Onward to Next G: The Road to the Multiverse explores the latest Internet developments, with a particular focus on 6G and Next G networks in the context of the emerging Metaverse and future Multiverse as the successors of today’s mobile Internet that has defined the last two decades.
Power Efficient Analog-to-digital Converters Using Both Voltage and Time Domain Information
Power Efficient Analog-to-digital Converters Using Both Voltage and Time Domain Information - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Power Efficient Analog-to-digital Converters Using Both Voltage and Time Domain Information write by Taehwan Oh. This book was released on 2013. Power Efficient Analog-to-digital Converters Using Both Voltage and Time Domain Information available in PDF, EPUB and Kindle. As advanced wired and wireless communication systems attempt to achieve higher performance, the demand for high resolution and wide signal bandwidth in their associated ADCs is strongly increased. Recently, time-domain quantization has drawn attention from its scalability in deep submicron CMOS processes. Furthermore, there are several interesting aspects of time-domain quantizer by processing the signal in time rather than only in voltage domain especially for power efficiency. This research focuses on developing a new architecture for power efficient, high resolution ADCs using both voltage and time domain information. As a first approach, a new [delta sigma] ADC based on a noise-shaped two-step integrating quantizer which quantizes the signal in voltage and time domains is presented. Attaining an extra order of noise-shaping from the integrating quantizer, the proposed [delta sigma] ADC manifests a second-order noise-shaping with a first-order loop filter. Furthermore, this quantizer provides an 8b uantization in itself, drastically reducing the oversampling requirement. The proposed ADC also incorporates a new feedback DAC topology that alleviates the feedback DAC complexity of a two-step 8b quantizer. The measured results of the prototype ADC implemented in a 0.13[micro]m CMOS demonstrate peak SNDR of 70.7dB (11.5b ENOB) at 8.1mW power, with an 8x OSR at 80MHz sampling frequency. To further improve ADC performance, a Nyquist ADC based on a time-based pipelined TDC is also proposed as a second approach. In this work, a simple V-T conversion scheme with a cheap low gain amplifier in its first stage and a hybrid time-domain quantization stage based on simple charge pump and capacitive DAC in its backend stages, are also proposed to improve ADC linearity and power efficiency. Using voltage and time domain information, the proposed ADC architecture is beneficial for both resolution and power efficiency, with MSBs resolved in voltage domain and LSBs in time domain. The measured results of the prototype ADC implemented in a 0.13[micro]m CMOS demonstrate peak SNDR of 69.3dB (11.2b ENOB) at 6.38mW power and 70MHz sampling frequency. The FOM is 38.2fJ/conversion-step.
