Title Wideband FM Techniques for Low-Power Wireless Communications

Published Aalborg : River Publishers, 2016

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Description 1 online resource (220 pages) Series River Publishers Series in Circuits and Systems River Publishers series in circuits and systems Contents Front Cover -- Half Title Page -- RIVER PUBLISHERS SERIES IN CIRCUITS AND SYSTEMS -- Title Page -- Wideband FM Techniques for Low-Power Wireless Communications -- Copyright Page -- Dedication -- Contents -- Foreword: John R. Long -- References -- Foreword: Cees J.M. Lanting -- Acknowledgments -- List of Figures -- List of Tables -- List of Abbreviations -- List of Symbols -- Chapter 1 -- Introduction -- 1.1 Definition of a UWB Signal -- 1.2 Impulse Radio -- 1.3 Wimedia -- 1.4 Motivation for Frequency Modulation FM-UWB -- 1.5 Objectives and Scope of the Book -- 1.6 Organization of the Book -- References -- Chapter 2 -- Principles and System Design of the Frequency Modulated UWB Radio -- 2.1 Introduction to Frequency Modulated Ultra-Wideband -- 2.2 FM-UWB Transmitter System Design -- 2.2.1 SubcarrierWaveform -- 2.2.2 Subcarrier Frequency -- 2.2.3 Subcarrier Modulation Scheme -- 2.3 FM-UWB Receiver System Design -- 2.3.1 Wideband FM Demodulator -- 2.3.1.1 Implications of Frequency Offset on the FM Demodulator Performance -- 2.3.1.2 FM Demodulator Noise -- 2.4 Conclusions -- References -- Chapter 3 -- Performance of Frequency Modulated UWB -- 3.1 FM-UWB Performance with AWGN -- 3.1.1 Link Span -- 3.1.2 Influence of RF Bandwidth on Link Span -- 3.2 FM-UWB Performance with Multiple Users -- 3.2.1 Analysis of a 2-User System -- 3.2.2 Analysis of a N-User System -- 3.2.3 FM-UWB Capacity Analysis -- 3.2.4 Performance Limitations in a Subcarrier FDMA System -- 3.3 FM-UWB Performance with Frequency-Selective Multipat -- 3.3.1 Consequences of Frequency-Selective Multipath -- 3.3.1.1 Best and Worst Case Propagation Channels -- 3.3.2 Performance Evaluation with Statistical Channel Models -- 3.3.2.1 Performance with 802.15.3a UWB channel models -- 3.3.2.2 Performance with IEEE802.15.6 UWB BAN channel models -- 3.4 FM-UWB Performance with Interference 3.4.1 Out-of-Band Interference -- 3.4.2 In-Band Interference -- 3.4.3 AM Demodulation and AM Rejection by the FM Demodulator -- 3.5 Conclusions -- References -- Chapter 4 -- FM-UWB Transmitter Implementation -- 4.1 DDS-based Subcarrier Signal Generation -- 4.1.1 DDS Clock Frequency -- 4.1.2 FSK Modulation of the DDS -- 4.1.3 Data Lowpass Filtering -- 4.1.4 DDS Complexity and Power Consumption -- 4.2 RF Signal Generation -- 4.2.1 Oscillator Type -- 4.2.2 VCO Tuning Curve Non-Linearity -- 4.2.3 RF Oscillator Phase Noise -- 4.2.4 Oscillator Resonator Power and DC Power Consumption -- 4.2.5 Output Amplifier Circuit Realizations -- 4.3 Conclusions -- References -- Chapter 5 -- FM-UWB Receiver Implementation -- 5.1 Receiver Front-end Specification -- 5.2 FM Demodulator Implementation -- 5.2.1 Delay Circuit Specification and Implementation -- 5.2.1.1 Parallel resonant circuit as a time delay -- 5.2.1.2 Lattice bandpass filter circuit as a time delay -- 5.2.1.3 Cascade of BPF and LBPF as a time delay -- 5.2.2 Multiplier Implementation -- 5.2.3 FM Demodulator Noise -- 5.2.3.1 Noise from the FM demodulator with Gilbert multiplier -- 5.2.3.2 Reduction of the Gilbert multiplier noise by current bleeding -- 5.2.4 Implications of Non-linearities in the FM-UWB Receiver Front-end -- 5.2.4.1 Large-signal behavior of the FM demodulator -- 5.2.4.2 Large-signal behavior of the FM demodulator with additional preamplification -- 5.2.4.3 Intermodulation components in the FM demodulator -- 5.3 Low Noise Amplifier Implementation -- 5.4 Receiver Subcarrier Processor Implementation -- 5.4.1 Anti-aliasing Filter Implementation Example -- 5.4.2 Lowpass Filter Implementation Example -- 5.4.3 FSK Demodulator and Bit Synchronizer -- 5.5 Conclusions -- References -- Chapter 6 -- Measured Performance of FM-UWB -- 6.1 Transceiver Prototype -- 6.2 Transmitter Performance 6.2.1 Subcarrier Signal -- 6.2.2 FM-UWB Signal -- 6.3 Receiver Performance -- 6.3.1 Front-end Measurements -- 6.3.2 Subcarrier Processor Measurements -- 6.4 Overall Transceiver Measurements -- 6.4.1 BER Measurements with AWGN -- 6.4.2 Link Span -- 6.4.3 Multi-user Performance -- 6.4.4 Narrowband Interference -- 6.4.5 Receiver Synchronization Time -- 6.4.6 Power Consumption -- 6.5 Conclusions -- References -- Chapter 7 -- Conclusions -- 7.1 Main Findings -- 7.2 Original Contributions -- 7.3 Recommendations for FutureWork -- Appendix A -- Power Spectral Density for FSK and BPSK Subcarrier Modulation Schemes -- A.1 Constant-envelope Subcarrier Modulation Scheme -- A.2 Non Constant-envelope Subcarrier Modulation Scheme -- Reference -- Appendix B -- Influence of RF Frequency Notchon Subcarrier Level -- B.1 Notch at Center Frequency with Variable Width -- B.2 Sliding Notch -- Appendix C -- Detailed Schematics of Wideband FM Demodulator -- C.1 FM Demodulator -- C.2 Low Noise Amplifier -- References -- Appendix D -- Approximation of Small-signal Gain of Hyperbolic Tangent Non-linearity -- List of Publications -- Summary -- Index -- About the Author -- Back Cover Summary Ultra Wideband (UWB) communications are poised to enable short-range applications, such as remote health monitoring (e-health) and home or office automation. Sensor networks are also suitable candidates for UWB since the low radiated power of the UWB transmitter enables low DC power consumption, yielding long battery life and the possibility to use energy scavenging. Size and cost constraints require a low-complexity approach that allows multiple users to share the same RF bandwidth, and offers robustness to interference, frequency-selective multipath and antenna mismatch. Wideband FM Techniques for Low-Power Wireless Communications presents research and applications that have taken place in UWB Communications over the past years. This book is being published posthumously in agreement with the authors' former colleagues from both the Swiss Center for Electronics and Microtechnology (CSEM) and Delft University of Technology in The Netherlands Bibliography Includes bibliographical references at the end of each chapters and index Notes John F.M. Gerrits Print version record Subject Wireless communication systems. SCIENCE / Energy TECHNOLOGY / Electronics / General TECHNOLOGY / Telecommunications Wireless communication systems Genre/Form Electronic books Form Electronic book ISBN 8793379617 9788793379619 9781003340041 1003340040 9781000794342 1000794342 9781000791198 100079119X

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