Download or read book Energy Efficient Embedded System Design written by Wenjie Huang and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pursuit of energy-efficient design in embedded systems has long become a critical issue. With improved energy effciency, the systems can incorporate more functionality and support better performances. Conventional design techniques innovate in hierarchical design levels from system, algorithm, architecture, to circuit. However, with the slowing of Moore's effect, efforts other than the circuit-level design are becoming more promising for the emerging applications. In this work, we investigate the core signal processing units in wireless communication systems and introduce a suite of new techniques from algorithm to architecture levels to improve energy effciency. First, we develop a comprehensive message truncation scheme to mitigate the decoding complexity of non-binary LDPC decoders. The dynamic channel state is exploited in the initialization stage to reduce message length. We then further prune the messages employing the inter-iteration decoding state of the core computational unit. The arithmetical logic and memory usage could be substantially decreased and therefore reduces the decoder power with the shorter messages. We also propose an adaptive offset correction mechanism to minimize the possible performance loss due to message truncation. And we develop a novel decoder architecture to accommodate the proposed algorithm designs. Second, we introduce a new non-binary LDPC decoder architecture with a low-power memory unit. As non-binary LDPC decoding is memory intensive and more than half of the power is consumed by memory access, the decoder power decreases significantly with the reduced memory power. Although over-scaling in memory power may introduce soft errors, LDPC codes could correct them with the error-resilience as channel codes. To find the extent to scale memory power, we train the decoder with the performance constraint under given channel states before the exploitations. Finally, we investigate the optimal sequential control policy for the signal tracking of GNSS receivers powered by renewable energy. With the proposed greedy and reinforcement learning algorithm, the receiver could opportunistically utilize the harvested energy by jointly considering the signal-noise ratio of the received signal and the available energy level. Different than conventional efforts, we could significantly maximize both energy efficiency and system service time with the desired positioning performances.
Download or read book System Level Design Techniques for Energy Efficient Embedded Systems written by Marcus T. Schmitz and published by Springer. This book was released on 2006-01-16 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: System-Level Design Techniques for Energy-Efficient Embedded Systems addresses the development and validation of co-synthesis techniques that allow an effective design of embedded systems with low energy dissipation. The book provides an overview of a system-level co-design flow, illustrating through examples how system performance is influenced at various steps of the flow including allocation, mapping, and scheduling. The book places special emphasis upon system-level co-synthesis techniques for architectures that contain voltage scalable processors, which can dynamically trade off between computational performance and power consumption. Throughout the book, the introduced co-synthesis techniques, which target both single-mode systems and emerging multi-mode applications, are applied to numerous benchmarks and real-life examples including a realistic smart phone.
Download or read book Embedded System Design written by Peter Marwedel and published by Springer Science & Business Media. This book was released on 2010-11-16 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until the late 1980s, information processing was associated with large mainframe computers and huge tape drives. During the 1990s, this trend shifted toward information processing with personal computers, or PCs. The trend toward miniaturization continues and in the future the majority of information processing systems will be small mobile computers, many of which will be embedded into larger products and interfaced to the physical environment. Hence, these kinds of systems are called embedded systems. Embedded systems together with their physical environment are called cyber-physical systems. Examples include systems such as transportation and fabrication equipment. It is expected that the total market volume of embedded systems will be significantly larger than that of traditional information processing systems such as PCs and mainframes. Embedded systems share a number of common characteristics. For example, they must be dependable, efficient, meet real-time constraints and require customized user interfaces (instead of generic keyboard and mouse interfaces). Therefore, it makes sense to consider common principles of embedded system design. Embedded System Design starts with an introduction into the area and a survey of specification models and languages for embedded and cyber-physical systems. It provides a brief overview of hardware devices used for such systems and presents the essentials of system software for embedded systems, like real-time operating systems. The book also discusses evaluation and validation techniques for embedded systems. Furthermore, the book presents an overview of techniques for mapping applications to execution platforms. Due to the importance of resource efficiency, the book also contains a selected set of optimization techniques for embedded systems, including special compilation techniques. The book closes with a brief survey on testing. Embedded System Design can be used as a text book for courses on embedded systems and as a source which provides pointers to relevant material in the area for PhD students and teachers. It assumes a basic knowledge of information processing hardware and software. Courseware related to this book is available at http://ls12-www.cs.tu-dortmund.de/~marwedel.
Download or read book Embedded Systems Fundamentals with ARM Cortex M Based Microcontrollers written by Alexander G. Dean and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Embedded System Design written by Peter Marwedel and published by Springer Nature. This book was released on 2021-01-25 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique feature of this open access textbook is to provide a comprehensive introduction to the fundamental knowledge in embedded systems, with applications in cyber-physical systems and the Internet of things. It starts with an introduction to the field and a survey of specification models and languages for embedded and cyber-physical systems. It provides a brief overview of hardware devices used for such systems and presents the essentials of system software for embedded systems, including real-time operating systems. The author also discusses evaluation and validation techniques for embedded systems and provides an overview of techniques for mapping applications to execution platforms, including multi-core platforms. Embedded systems have to operate under tight constraints and, hence, the book also contains a selected set of optimization techniques, including software optimization techniques. The book closes with a brief survey on testing. This fourth edition has been updated and revised to reflect new trends and technologies, such as the importance of cyber-physical systems (CPS) and the Internet of things (IoT), the evolution of single-core processors to multi-core processors, and the increased importance of energy efficiency and thermal issues.
Download or read book Creating Fast Responsive and Energy Efficient Embedded Systems Using the Renesas Rl78 Microcontroller written by Alexander G. Dean and published by . This book was released on 2012-03-01 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Embedded microcontrollers enable products with sophisticated control, precise timing, low unit cost, low development cost, and high design flexibility. This book shows how to design and optimize embedded systems using the energy-efficient RL78 family of microcontrollers from Renesas Electronics Inc. The book is suitable for practicing engineers and both undergraduate and graduate classes on embedded systems. The first section of the book provides an introduction to developing embedded systems efficiently. - Basic microcontroller concepts - Processor core, instruction set architecture and interrupt system - Peripherals for digital and analog interfacing, serial communications, timing control, system robustness and acceleration, clock system control and low-power standby modes - Software development concepts including software engineering, development tool-chain, and compiler concepts The second section dives into optimizing embedded systems for three different goals. - Program speed depends on designing an efficient program and then helping the compiler generate fast object code. Execution time profiling finds the slow parts of the program quickly and guides speed optimization efforts. Examining object code helps determine if the compiler is working well enough. - Program responsiveness to events depends on the task scheduling approach and the use of preemption and prioritization. Real-time system analysis enables the calculation of response times and schedulability. - System energy efficiency depends on balancing a system's static and dynamic power consumption. A good design will trade off supply voltage, operating frequency, standby and shutdown modes to meet energy or power goals.
Download or read book Power efficient System Design written by Preeti Ranjan Panda and published by Springer Science & Business Media. This book was released on 2010-07-23 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Information and communication technology (ICT) industry is said to account for 2% of the worldwide carbon emissions – a fraction that continues to grow with the relentless push for more and more sophisticated computing equipment, c- munications infrastructure, and mobile devices. While computers evolved in the directionofhigherandhigherperformanceformostofthelatterhalfofthe20thc- tury, the late 1990’s and early 2000’ssaw a new emergingfundamentalconcern that has begun to shape our day-to-day thinking in system design – power dissipation. As we elaborate in Chapter 1, a variety of factors colluded to raise power-ef?ciency as a ?rst class design concern in the designer’s mind, with profound consequences all over the ?eld: semiconductor process design, circuit design, design automation tools, system and application software, all the way to large data centers. Power-ef?cient System Design originated from a desire to capture and highlight the exciting developments in the rapidly evolving ?eld of power and energy op- mization in electronic and computer based systems. Tremendous progress has been made in the last two decades, and the topic continues to be a fascinating research area. To develop a clearer focus, we have concentrated on the relatively higher level of design abstraction that is loosely called the system level. In addition to the ext- sive coverage of traditional power reduction targets such as CPU and memory, the book is distinguished by detailed coverage of relatively modern power optimization ideas focussing on components such as compilers, operating systems, servers, data centers, and graphics processors.
Download or read book Design Principles for Embedded Systems written by KCS Murti and published by Springer Nature. This book was released on 2021-09-20 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is designed to serve as a textbook for courses offered to graduate and undergraduate students enrolled in electronics and electrical engineering and computer science. This book attempts to bridge the gap between electronics and computer science students, providing complementary knowledge that is essential for designing an embedded system. The book covers key concepts tailored for embedded system design in one place. The topics covered in this book are models and architectures, Executable Specific Languages – SystemC, Unified Modeling Language, real-time systems, real-time operating systems, networked embedded systems, Embedded Processor architectures, and platforms that are secured and energy-efficient. A major segment of embedded systems needs hard real-time requirements. This textbook includes real-time concepts including algorithms and real-time operating system standards like POSIX threads. Embedded systems are mostly distributed and networked for deterministic responses. The book covers how to design networked embedded systems with appropriate protocols for real-time requirements. Each chapter contains 2-3 solved case studies and 10 real-world problems as exercises to provide detailed coverage and essential pedagogical tools that make this an ideal textbook for students enrolled in electrical and electronics engineering and computer science programs.
Download or read book System Level Design Techniques for Energy Efficient Embedded Systems written by Marcus T. Schmitz and published by Springer. This book was released on 2008-11-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: System-Level Design Techniques for Energy-Efficient Embedded Systems addresses the development and validation of co-synthesis techniques that allow an effective design of embedded systems with low energy dissipation. The book provides an overview of a system-level co-design flow, illustrating through examples how system performance is influenced at various steps of the flow including allocation, mapping, and scheduling. The book places special emphasis upon system-level co-synthesis techniques for architectures that contain voltage scalable processors, which can dynamically trade off between computational performance and power consumption. Throughout the book, the introduced co-synthesis techniques, which target both single-mode systems and emerging multi-mode applications, are applied to numerous benchmarks and real-life examples including a realistic smart phone.
Download or read book Energy Efficient Fault Tolerant Systems written by Jimson Mathew and published by Springer Science & Business Media. This book was released on 2013-09-07 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the state-of-the-art in energy efficient, fault-tolerant embedded systems. It covers the entire product lifecycle of electronic systems design, analysis and testing and includes discussion of both circuit and system-level approaches. Readers will be enabled to meet the conflicting design objectives of energy efficiency and fault-tolerance for reliability, given the up-to-date techniques presented.
Download or read book Energy Efficient Embedded Video Processing Systems written by Muhammad Usman Karim Khan and published by Springer. This book was released on 2017-09-17 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides its readers with the means to implement energy-efficient video systems, by using different optimization approaches at multiple abstraction levels. The authors evaluate the complete video system with a motive to optimize its different software and hardware components in synergy, increase the throughput-per-watt, and address reliability issues. Subsequently, this book provides algorithmic and architectural enhancements, best practices and deployment models for new video systems, while considering new implementation paradigms of hardware accelerators, parallelism for heterogeneous multi- and many-core systems, and systems with long life-cycles. Particular emphasis is given to the current video encoding industry standard H.264/AVC, and one of the latest video encoders (High Efficiency Video Coding, HEVC).
Download or read book Design Techniques for Energy efficient Embedded and Mobile Computing Systems written by Keith S. Vallerio and published by . This book was released on 2004 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Designing Embedded Processors written by Jörg Henkel and published by Springer Science & Business Media. This book was released on 2007-07-27 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: To the hard-pressed systems designer this book will come as a godsend. It is a hands-on guide to the many ways in which processor-based systems are designed to allow low power devices. Covering a huge range of topics, and co-authored by some of the field’s top practitioners, the book provides a good starting point for engineers in the area, and to research students embarking upon work on embedded systems and architectures.
Download or read book Energy efficient and predictable design of real time embedded systems written by Alexandru Andrei and published by . This book was released on 2007 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Embedded System Design written by Peter Marwedel and published by Springer Science & Business Media. This book was released on 2005 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the material for a first course on embedded systems. This book aims to provide an overview of embedded system design and to relate the most important topics in embedded system design to each other. It aims to help motivate students as well as professors to put more emphasis on education in embedded systems.
Download or read book Design of Energy Efficient Embedded Systems Exploiting Domain specific Information written by Junlin Chen and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving the energy efficiency has been the critical design goal for embedded systems. Recently, there have been some practical techniques employed to the power supply of embedded systems to extend the system's lifetime. One is renewable energy technologies such as energy harvesting from the environment to offer a sustainable, inexpensive, and maintenance-free alternative power source. Another is voltage overscaling (VOS) technique, which scales down the supply voltage to reduce the power consumption quadratically. However, most renewable energy sources are unstable and intermittent due to dynamically changing environmental conditions, and VOS inevitably incurs hardware errors, thereby posing new challenges to the improvements of energy efficiency in the embedded systems. In this dissertation, we identify four specific power-hungry signal processing units and develop a suite of techniques to improve the energy efficiency of embedded systems, by jointly exploiting the properties of the power source and the domain-specific information in the signal processing of embedded systems. First, we propose to dynamically adjust the modulation scheme to deal with time-varying wireless channel conditions and non-deterministic renewable energy levels in a coherent manner to maximize the data rate of RF circuits of the embedded systems. Then, we develop a progressive performance tuning approach to dynamically determine an acceptable signal processing performance in accordance with the changing energy level at runtime, by considering both of the non-deterministic characteristics of renewable energy and the unique relationship between signal processing performance and the required energy consumption. We also develop a link and energy adaptive UWB-based sensing technique to improve the detection time coverage and range coverage for self-sustained embedded applications. The proposed technique jointly exploits the link information between the transmitter and receiver of the UWB pulse radar, and the non-deterministic characteristics of the renewable energy, and dynamically adjusts the pulse repetition frequency of the UWB radar to enhance the sustainable operation under the unreliable energy supply. Finally, we present a low-power LDPC decoder design by exploiting inherent memory error statistics due to voltage scaling. After analyzing the error sensitivity to the decoding performance at different memory bits and memory locations in the LDPC decoder, we apply the scaled supply voltage to memory bits with high algorithmic error-tolerance capability to reduce the memory power consumption with minimal decoding performance loss.
Download or read book Memory Design Techniques for Low Energy Embedded Systems written by Alberto Macii and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Memory Design Techniques for Low Energy Embedded Systems centers one of the most outstanding problems in chip design for embedded application. It guides the reader through different memory organizations and technologies and it reviews the most successful strategies for optimizing them in the power and performance plane.
