Energy Efficient Implementation Of Communication Algorithms Through Complexity Reduction
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Energy Efficient Implementation Of Communication Algorithms Through Complexity Reduction
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Author : Narges Mohammadi Sarband
language : en
Publisher: Linköping University Electronic Press
Release Date : 2024-12-13
Energy Efficient Implementation Of Communication Algorithms Through Complexity Reduction written by Narges Mohammadi Sarband and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-12-13 with categories.
Energy-efficient implementations are essential for the future and modern society, especially in digital signal processing (DSP) and communication systems, where the rapid growth of devices, such as those battery-driven internet of things (IoT) sensors, necessitates low-complexity and low-power solutions. This thesis concentrates on two areas: constant multiplication and active user detection in wire-less networks. Constant multiplication can be implemented using a shift-and-add (SHA) network. Typically, the number of adders/subtracters is minimized, but the number of cascaded adders/subtracters (depth) also impacts the power consumption. The two classes of algorithms used to solve the problem are adder graph algorithms or sub-expression sharing algorithms. Adder graph algorithms typically yield better results for a single or a low number of inputs, since they do not depend on the representation of the numbers involved. However, they can lead to very high run times and worse results when the number of inputs is high. At the same time, it is known that it is possible to transpose the problem. For example, a sum of products (many inputs) can be transposed to a single input with multiple coefficients, meaning that it is possible to transpose the problem to the more advantageous form, solve it and then transpose the solution back. However, there has been no systematic algorithm available to obtain the transposed result that takes depth into account. In this thesis, a systematic algorithm that obtains the minimum depth of the transposed SHA network subject to the input is introduced. The practical application of the constant multiplication problem is demonstrated through the implementation of a reconfigurable lowpass equalizer, widely used in communication systems and DSP. Various formulations of the constant multiplication problem, combined with pipelining, are explored to identify the most efficient implementation in a 28 nm FD-SOI standard cell, significantly reducing power consumption and highlighting the real-world impact of our research. The second research focuses on the challenge of detecting active users in massive machine-type communication (mMTC) scenarios involving large numbers of devices. The problem is addressed using a pilot-hopping sequence method and is formulated as a non-negative least-squares (NNLS) problem. This work implements two NNLS algorithms, fast projected gradient (Fast) and multiplicative updates (Mult), to solve the active user detection problem. These implementations are implemented in a 28 nm FD-SOI process and are optimized for energy efficiency, chip area, and detection speed. The results demonstrate the ability to perform over a million detections per second with significantly lower energy consumption compared to existing methods. However, the implementations lack reconfigurability, and it can be argued whether the high detection rates are relevant for current practical applications. To enhance practicality and reconfigurability, the Fast algorithm is implemented using a reconfigurable time-multiplexed architecture, reducing resources by reusing them within one iteration. This architecture employs a novel user re-ordering method to enable parallel memory access and continuous operation for successive iterations, thereby increasing the execution speed. The architecture is implemented on numerous FPGA families, demonstrating resource efficiency and reconfigurability by storing the pilot-hopping sequences in memory, while obtaining a more practically usable detection rate of about one to a few thousand detections per second depending on the FPGA family. Energieffektiva implementationer är avgörande för framtiden och det moderna samhället, särskilt inom digital signalbehandling (DSP) och kommunikationssystem, där den snabba tillväxten av enheter, såsom de inom Internet of Things (IoT), kräver lösningar med låg komplexitet och låg effektförbrukning. Denna avhandling fokuserar på två områden: konstantmultiplikation och detektering av aktiva användare i trådlösa nätverk. Konstantmultiplikation kan implementeras med ett shift-and-add (SHA) nätverk. Vanligtvis så minimeras antalet adderare/subtraherare, men antalet kaskadkopplade adderare/subtraherare (djupet) påverkar också effektförbrukningen. De två klasserna av algoritmer för att lösa konstaktmultiplikation baseras på adderargrafer eller gemensamma deluttryck. Addergrafer är oftast bättre vid en eller få ingångar, eftersom de inte beror på vilken representation som talen uttrycks med. För många ingångar så kan beräkningstiden öka väldigt snabbt samt att resultaten ofta är sämre eftersom sökrymden ökar fort. Samtidigt så är det välkänt att det får att transponera problemet. Till exempel så kan en summa produkter (många ingångar) transponeras till en ingång som multipliceras med många olika konstanter. Detta leder till att det är möjligt att transponera problemet till den mest fördelaktiga formen, lösa det och sedan transponera lösningen. Det har tidigare inte funnits någon systematisk algoritm för att transponera ett nätverk som tar hänsyn till djupet, men i denna avhandling så presenteras en som garanterar minimalt djup givet en viss adderargraf som argument. Den praktiska tillämpningen av konstantmultiplikation demonstreras genom implementering av en konfigurerbar lågpassutjämnare, som är allmänt använd i DSP- och kommunikationssystem. Olika formuleringar av konstantmultiplikationsproblemet, kombinerat med pipelining, utforskas för att identifiera den mest effektiva implementationen i en 28 nm FD-SOI-standardcell, vilket avsevärt minskar strömförbrukningen och visar den verkliga påverkan av vår forskning. Den andra forskningen fokuserar på utmaningen att detektera aktiva användare i massive machinetype communication (mMTC) med ett stort antal enheter. Problemet hanteras med hjälp av en pilothoppingssekvensmetod och formuleras som ett problem med non-negative least-squares (NNLS). Detta arbete implementerar två NNLS-algoritmer, fast projected gradient (Fast) och multiplikativa uppdateringar (Mult), för att lösa problemet med detektering av aktiva användare. Dessa implementationer implementerade i en 28 nm FD-SOI-process och är optimerade för energieffektivitet, chiparea och detekteringshastighet. Resultaten visar att mer än en miljon detektioner per sekund kan utföras med betydligt lägre energiförbrukning än befintliga metoder, till stor del för att en iteration beräknas helt parallelt. Dock saknas möjlighet att ändra användarsekvenser och det kan diskuteras om den höga detektionstakten är praktiskt användbar. För att öka praktiskheten implementeras Fast-algoritmen med en konfigurerbar tidsmultiplexad arkitektur, vilken sparar resurser genom att återanvända dem i en iteration. Denna arkitektur använder en ny metod att ordna om användarna för att möjliggöra parallell minnesåtkomst och kontinuerliga beräkning-ar för efterföljande iterationer, vilket ökar exekveringshastigheten. Arkitekturen implementeras på olika FPGA-familjer och visar resurseffektivitet och konfigurerbarhet genom att pilothoppningssekvenserna sparas i minne, samtidigt som en mer praktiskt användbar detektionshastighet från ungefär ett tusen till några tusen detektioner per sekund beroende på FPGA-familj.
Energy Efficient Implementation Of Communication Algorithms Through Complexity Reduction
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Author : Narges Mohammadi Sarband
language : en
Publisher:
Release Date : 2025
Energy Efficient Implementation Of Communication Algorithms Through Complexity Reduction written by Narges Mohammadi Sarband and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025 with categories.
Proceedings Of Iemtronics 2024
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Author : Phillip G. Bradford
language : en
Publisher: Springer Nature
Release Date : 2025-01-24
Proceedings Of Iemtronics 2024 written by Phillip G. Bradford and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-01-24 with Computers categories.
This book gathers selected research papers presented at IEMTRONICS 2024 (International IoT, Electronics and Mechatronics Conference), held during 3 – 5 April 2024 in London, United Kingdom in hybrid mode. This book presents a collection of state-of-the-art research work involving cutting-edge technologies in the field of IoT, electronics mechatronics, and related areas. The work is presented in two volumes.
Computational Intelligence In Communications And Business Analytics
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Author : Jyoti Prakash Singh
language : en
Publisher: Springer Nature
Release Date : 2025-02-11
Computational Intelligence In Communications And Business Analytics written by Jyoti Prakash Singh and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-02-11 with Computers categories.
This three-volume set CCIS 2366-2368 constitutes the refereed proceedings of the 6th International Conference on Computational Intelligence in Communications and Business Analytics, CICBA 2024, held in Patna, India, during January 23–25, 2024. The 82 full papers presented in this volume were carefully reviewed and selected from 249 submissions. Together, these papers showcase cutting-edge research in the fields of computational intelligence and business analytics, covering a broad range of topics.
Proceedings Of Third International Symposium On Sustainable Energy And Technological Advancements
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Author : Gayadhar Panda
language : en
Publisher: Springer Nature
Release Date : 2024-12-09
Proceedings Of Third International Symposium On Sustainable Energy And Technological Advancements written by Gayadhar Panda and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-12-09 with Technology & Engineering categories.
This book contains selected papers presented at Third International Symposium on Sustainable Energy and Technological Advancements (ISSETA 2024), organized by the Department of Electrical Engineering, NIT Meghalaya, Shillong, India, during February 24–25, 2024. The topics covered in the book are the cutting-edge research involved in sustainable energy technologies, smart building technology, integration and application of multiple energy sources; advanced power converter topologies and their modulation techniques; and information and communication technologies for smart micro-grids.
International Conference On Innovative Computing And Communications
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Author : Aboul Ella Hassanien
language : en
Publisher: Springer Nature
Release Date : 2023-10-25
International Conference On Innovative Computing And Communications written by Aboul Ella Hassanien and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-10-25 with Technology & Engineering categories.
This book includes high-quality research papers presented at the Sixth International Conference on Innovative Computing and Communication (ICICC 2023), which is held at the Shaheed Sukhdev College of Business Studies, University of Delhi, Delhi, India, on February 17–18, 2023. Introducing the innovative works of scientists, professors, research scholars, students, and industrial experts in the field of computing and communication, the book promotes the transformation of fundamental research into institutional and industrialized research and the conversion of applied exploration into real-time applications.
Wireless Sensor Networks And Energy Efficiency Protocols Routing And Management
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Author : Zaman, Noor
language : en
Publisher: IGI Global
Release Date : 2012-01-31
Wireless Sensor Networks And Energy Efficiency Protocols Routing And Management written by Zaman, Noor and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-31 with Technology & Engineering categories.
"This book focuses on wireless sensor networks and their operation, covering topics including routing, energy efficiency and management"--
Advanced Radio Frequency Antennas For Modern Communication And Medical Systems
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Author : Albert Sabban
language : en
Publisher: BoD – Books on Demand
Release Date : 2020-09-23
Advanced Radio Frequency Antennas For Modern Communication And Medical Systems written by Albert Sabban and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-23 with Technology & Engineering categories.
The main objective of this book is to present novel radio frequency (RF) antennas for 5G, IOT, and medical applications. The book is divided into four sections that present the main topics of radio frequency antennas. The rapid growth in development of cellular wireless communication systems over the last twenty years has resulted in most of world population owning smartphones, smart watches, I-pads, and other RF communication devices. Efficient compact wideband antennas are crucial in RF communication devices. This book presents information on planar antennas, cavity antennas, Vivaldi antennas, phased arrays, MIMO antennas, beamforming phased array reconfigurable Pabry-Perot cavity antennas, and time modulated linear array.
Large Scale Distributed Systems And Energy Efficiency
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Author : Jean-Marc Pierson
language : en
Publisher: John Wiley & Sons
Release Date : 2015-03-05
Large Scale Distributed Systems And Energy Efficiency written by Jean-Marc Pierson and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-05 with Computers categories.
Addresses innovations in technology relating to the energy efficiency of a wide variety of contemporary computer systems and networks With concerns about global energy consumption at an all-time high, improving computer networks energy efficiency is becoming an increasingly important topic. Large-Scale Distributed Systems and Energy Efficiency: A Holistic View addresses innovations in technology relating to the energy efficiency of a wide variety of contemporary computer systems and networks. After an introductory overview of the energy demands of current Information and Communications Technology (ICT), individual chapters offer in-depth analyses of such topics as cloud computing, green networking (both wired and wireless), mobile computing, power modeling, the rise of green data centers and high-performance computing, resource allocation, and energy efficiency in peer-to-peer (P2P) computing networks. Discusses measurement and modeling of the energy consumption method Includes methods for energy consumption reduction in diverse computing environments Features a variety of case studies and examples of energy reduction and assessment Timely and important, Large-Scale Distributed Systems and Energy Efficiency is an invaluable resource for ways of increasing the energy efficiency of computing systems and networks while simultaneously reducing the carbon footprint.
Selected Papers From The First International Symposium On Future Ict Future Ict 2019 In Conjunction With 4th International Symposium On Mobile Internet Security Mobisec 2019
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Author : Giovanni Pau
language : en
Publisher: MDPI
Release Date : 2021-05-11
Selected Papers From The First International Symposium On Future Ict Future Ict 2019 In Conjunction With 4th International Symposium On Mobile Internet Security Mobisec 2019 written by Giovanni Pau and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-11 with Technology & Engineering categories.
The International Symposium on Future ICT (Future-ICT 2019) in conjunction with the 4th International Symposium on Mobile Internet Security (MobiSec 2019) was held on 17–19 October 2019 in Taichung, Taiwan. The symposium provided academic and industry professionals an opportunity to discuss the latest issues and progress in advancing smart applications based on future ICT and its relative security. The symposium aimed to publish high-quality papers strictly related to the various theories and practical applications concerning advanced smart applications, future ICT, and related communications and networks. It was expected that the symposium and its publications would be a trigger for further related research and technology improvements in this field.