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Author: Jing Zhang
Publisher:
ISBN: 9780494161319
Category :
Languages : en
Pages : 248
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Book Description
The application of OFDM technology to radios operating in the 60 GHz band has stimulated much interest in the research community. The implementation of these systems has brought a series of design challenges since a successful design must traverse multiple design representation layers and experience numerous transformations. This thesis focuses on the implementation of an OFDM baseband processing system for 60 GHz radios supporting data rates of up to 1.5 Gbps. It covers the system level, architectural level and implementation level design issues. A framework for OFDM system level design, including the identification of key design parameters, a design tool to rapidly explore the design space, and an SoC-oriented system functional model, has been proposed and implemented. A systematic finite-word-length effect evaluation method based on statistical analysis and bit-true simulation has been adopted to transform the algorithm into an area-efficient fixed-point implementation. Architectures for critical building blocks are carefully explored to meet the required performance specifications with acceptable cost. The whole system has been coded in Verilog, verified, synthesized and implemented in a Xilinx FPGA.
Author: Jing Zhang
Publisher:
ISBN: 9780494161319
Category :
Languages : en
Pages : 248
Get Book Here
Book Description
The application of OFDM technology to radios operating in the 60 GHz band has stimulated much interest in the research community. The implementation of these systems has brought a series of design challenges since a successful design must traverse multiple design representation layers and experience numerous transformations. This thesis focuses on the implementation of an OFDM baseband processing system for 60 GHz radios supporting data rates of up to 1.5 Gbps. It covers the system level, architectural level and implementation level design issues. A framework for OFDM system level design, including the identification of key design parameters, a design tool to rapidly explore the design space, and an SoC-oriented system functional model, has been proposed and implemented. A systematic finite-word-length effect evaluation method based on statistical analysis and bit-true simulation has been adopted to transform the algorithm into an area-efficient fixed-point implementation. Architectures for critical building blocks are carefully explored to meet the required performance specifications with acceptable cost. The whole system has been coded in Verilog, verified, synthesized and implemented in a Xilinx FPGA.
Author: Su-Khiong Yong
Publisher: John Wiley & Sons
ISBN: 1119956749
Category : Technology & Engineering
Languages : en
Pages : 244
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Book Description
This book addresses 60 GHz technology for Gbps WLAN and WPAN from theory to practice, covering key aspects for successful deployment. In this book, the authors focus specifically on 60 GHz wireless technology which has emerged as the most promising candidate for multi-gigabit wireless indoor communication systems. 60 GHz technology offers various advantages over current or existing communications systems (e.g. huge unlicensed bandwidth worldwide, high transmit power, high frequency reuse and small form factor), which enables many disruptive applications that are otherwise difficult if not impossible to be realized at lower frequencies. The book addresses all aspects of the state-of-the-art in 60 GHz technology for high data rate wireless applications. Key Features: Comprehensive coverage from theory to practice: provides readers with a thorough technical guide of 60 GHz technology development Brings together the entire area of 60GHz technology for Gigabits per second (Gbps) WLAN and WPAN applications. Discusses practical system designs covering wide aspects such as antenna propagation, beamforming, circuit design, digital communication, signal processing, system architectures, etc. Provides up-to-date standardization activities, regulatory issues, technology development as well as future trends Includes examples and case studies for practical scenarios Contains theoretical, simulation and experimental results to demonstrate and compare the performance of various schemes (or systems) This book serves as an excellent reference for system engineers, system architects, IC designers, standard engineers, researchers, and vendor and manufacturer consumers. Technical consultants, software and application developers will also find this book of interest.
Author: Jing Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages : 248
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Book Description
Author: Tzi-Dar Chiueh
Publisher: John Wiley & Sons
ISBN: 0470822481
Category : Technology & Engineering
Languages : en
Pages : 278
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Book Description
Orthogonal frequency-division multiplexing (OFDM) access schemes are becoming more prevalent among cellular and wireless broadband systems, accelerating the need for smaller, more energy efficient receiver solutions. Up to now the majority of OFDM texts have dealt with signal processing aspects. To address the current gap in OFDM integrated circuit (IC) instruction, Chiueh and Tsai have produced this timely text on baseband design. OFDM Baseband Receiver Design for Wireless Communications covers the gamut of OFDM technology, from theories and algorithms to architectures and circuits. Chiueh and Tsai give a concise yet comprehensive look at digital communications fundamentals before explaining modulation and signal processing algorithms in OFDM receivers. Moreover, the authors give detailed treatment of hardware issues -- from design methodology to physical IC implementation. Closes the gap between OFDM theory and implementation Enables the reader to transfer communication receiver concepts into hardware design wireless receivers with acceptable implementation loss achieve low-power designs Contains numerous figures to illustrate techniques Features concrete design examples of MC-CDMA systems and cognitive radio applications Presents theoretical discussions that focus on concepts rather than mathematical derivation Provides a much-needed single source of material from numerous papers Based on course materials for a class in digital communication IC design, this book is ideal for advanced undergraduate or post-graduate students from either VLSI design or signal processing backgrounds. New and experienced engineers in industry working on algorithms or hardware for wireless communications devices will also find this book to be a key reference.
Author: Adarsh Narasimhamurthy
Publisher: Springer Nature
ISBN: 3031015134
Category : Technology & Engineering
Languages : en
Pages : 68
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Book Description
Orthogonal Frequency Division Multiplexing (OFDM) systems are widely used in the standards for digital audio/video broadcasting, WiFi and WiMax. Being a frequency-domain approach to communications, OFDM has important advantages in dealing with the frequency-selective nature of high data rate wireless communication channels. As the needs for operating with higher data rates become more pressing, OFDM systems have emerged as an effective physical-layer solution. This short monograph is intended as a tutorial which highlights the deleterious aspects of the wireless channel and presents why OFDM is a good choice as a modulation that can transmit at high data rates. The system-level approach we shall pursue will also point out the disadvantages of OFDM systems especially in the context of peak to average ratio, and carrier frequency synchronization. Finally, simulation of OFDM systems will be given due prominence. Simple MATLAB programs are provided for bit error rate simulation using a discrete-time OFDM representation. Software is also provided to simulate the effects of inter-block-interference, inter-carrier-interference and signal clipping on the error rate performance. Different components of the OFDM system are described, and detailed implementation notes are provided for the programs. The program can be downloaded here. Table of Contents: Introduction / Modeling Wireless Channels / Baseband OFDM System / Carrier Frequency Offset / Peak to Average Power Ratio / Simulation of the Performance of OFDM Systems / Conclusions
Author: Santosh Kumar
Publisher: Frontiers Media SA
ISBN: 2889746801
Category : Science
Languages : en
Pages : 169
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Book Description
Author: Tzi-Dar Chiueh
Publisher: John Wiley & Sons
ISBN: 1118188217
Category : Technology & Engineering
Languages : en
Pages : 388
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Book Description
The Second Edition of OFDM Baseband Receiver Design for Wirless Communications, this book expands on the earlier edition with enhanced coverage of MIMO techniques, additional baseband algorithms, and more IC design examples. The authors cover the full range of OFDM technology, from theories and algorithms to architectures and circuits. The book gives a concise yet comprehensive look at digital communication fundamentals before explaining signal processing algorithms in receivers. The authors give detailed treatment of hardware issues - from architecture to IC implementation. Links OFDM and MIMO theory with hardware implementation Enables the reader to transfer communication received concepts into hardware; design wireless receivers with acceptable implemntation loss; achieve low-power designs Covers the latest standards, such as DVB-T2, WiMax, LTE and LTE-A Includes more baseband algorithms, like soft-decoding algorithms such as BCJR and SOVA Expanded treatment of channel models, detection algorithms and MIMO techniques Features concrete design examples of WiMAX systems and cognitive radio apllications Companion website with lecture slides for instructors Based on materials developed for a course in digital communication IC design, this book is ideal for graduate students and researchers in VLSI design, wireless communications, and communications signal processing. Practicing engineers working on algorithms or hardware for wireless communications devices will also find this to be a key reference.
Author: Antonio Lucio Cinquino
Publisher:
ISBN:
Category : Modems
Languages : en
Pages : 0
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Book Description
This thesis describes a real-time, DSP implementation of a baseband OFDM system, which includes interleaving and forward error correction algorithms. Software modules representing discrete system blocks are created and sequentially called upon as needed. The software reconfigurable system is developed on a Texas Instruments TMS320C6201 Evaluation Module, which is based on a fixed-point processor. Different combinations of arithmetic precision and speed for the fixed-point operations were explored. The decisive combination was used to evaluate the accuracy of the system by plotting bit-error curves against an equivalent floating-point model. System efficiency is employed from the design stage through the use of Look-Up tables as well as cyclic shift registers. Upon implementation, the system is built using settings optimized for speed. In addition, memory management is used to ensure that critical instructions are kept on the fast on-chip memory while different access times for retrieving data on external memory were evaluated for best results. Finally, each software module is profiled to investigate and remove unnecessary latency issues. Processing efficiency is monitored by recording throughput results, which are used to calculate maximum bit-rates. Using these results, estimations are made for bit-rates achievable by higher performance processors. These estimations demonstrate that a highly flexible DSP platform can ultimately meet speed and flexibility requirements for Software Defined Radios.
Author: Rolf Kraemer
Publisher: John Wiley & Sons
ISBN: 9780470740132
Category : Technology & Engineering
Languages : en
Pages : 368
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Book Description
This unique book reviews the future developments of short-range wireless communication technologies Short-Range Wireless Communications: Emerging Technologies and Applications summarizes the outcomes of WWRF Working Group 5, highlighting the latest research results and emerging trends on short-range communications. It contains contributions from leading research groups in academia and industry on future short-range wireless communication systems, in particular 60 GHz communications, ultra-wide band (UWB) communications, UWB radio over optical fiber, and design rules for future cooperative short-range communications systems. Starting from a brief description of state-of-the-art, the authors highlight the perspectives and limits of the technologies and identify where future research work is going to be focused. Key Features: Provides an in-depth coverage of wireless technologies that are about to start an evolution from international standards to mass products, and that will influence the future of short-range communications Offers a unique and invaluable visionary overview from both industry and academia Identifies open research problems, technological challenges, emerging technologies, and fundamental limits Covers ultra-high speed short-range communication in the 60 GHz band, UWB communication, limits and challenges, cooperative aspects in short-range communication and visible light communications, and UWB radio over optical fiber This book will be of interest to research managers, R&D engineers, lecturers and graduate students within the wireless communication research community. Executive managers and communication engineers will also find this reference useful.
Author: Frank Hsiao
Publisher:
ISBN:
Category :
Languages : en
Pages : 134
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Book Description
The unlicensed 60 GHz band provides new opportunities for short ranged indoor Gb/s wireless communication applications. Compared with III-V semiconductor process technologies, nanometer CMOS based 60 GHz transceivers are attractive from the manufacturing cost and low power consumption point of view but these sensitive mm-Wave transceivers are highly susceptible to process variations thus they face a big challenge in achieving high yield performance. This suggests DSP based calibration circuits and algorithms to compensate for the performance loss due to process variations. In the first part of the dissertation, DSP based "Self-Healing" circuits and systems are presented to perform concurrent calibration on multiple RF transceiver parameters such as noise figure, image, transmitter IQ mismatch, and DC offset to optimize the 60 GHz CMOS transceiver performance. Digital baseband circuits applied to probe and measure the RF parameters such as direct digital frequency synthesizer, FFT based spectrum analyzer, and self-healing calibration controller will be discussed for a 4 Gb/s 60 GHz self-healing transceiver SOC in 65nm CMOS process. In the second part of the dissertation, the focus will be on the implementation aspects of a digital modem for a muti-Gb/s 60 GHz SOC radio. A 7 Gb/s OFDM/Single-Carrier frequency domain equalizer in 65 nm will be presented as an example. 4-parallel signal processing architecture allows this equalizer chip to achieve a symbol sampling rate of 1.76 GS/s while the core DSP circuits are clocked at 1/4 the input symbol rate. This equalizer chip is equipped with a 512pt FFT processor and a 512pt IFFT processor to demodulate the received OFDM and single-carrier signals. It includes a time domain Golay correlator based channel estimator to obtain the multipath channel impulse response, and it also includes a MMSE equalizer for channel correction in frequency domain.
