Green Software Defined Radios: Enabling seamless connectivity while saving on hardware and energy

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Springer Science & Business Media, Dec 21, 2008 - Technology & Engineering - 157 pages
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Green Software De?ned Radios, the title of this book may have originated from a lackofinspiration,andthecombinationofhardwork,jetlag,anddrinkinggreentea. The message we want to convey however, is that SDRs are a promising technology for the future, providing they are designed for ef?cient usage of scarce resources: energy and spectrum. In the last years, the R&D teams focusing on wireless c- munication (around the world and at IMEC speci?cally), have realized great bre- throughs. It is our honor, building on this knowledge, to bring a comprehensive overview of the essential technologies. We are grateful that Springer is willing to publish in their collection on radio technologies, a book on green SDRs, a weird species still today, yet maybe the baseline for the day after tomorrow. Dear reader, we wish that you ?nd in the following pages, including the references, some int- esting insights, and that this book may live more or less up to your expectations (and hopefully more than less). Thisbook’sclosingstatesthatthequestforGreenSDRshasnotended,thisisjust the beginning. Concerning this book however, we are happy that today the opposite is true. We want to acknowledge our colleagues at IMEC for their great scienti?c contribution, and even more for the enjoyable cooperation.
 

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Contents

The Wireless and Technology Scene Trends Asking for Green Software Defined Radio Solutions
1
When Wireless Communication and Microelectronics Meet
2
Heterogeneity Desires Flexibility
3
A Market Perspective
4
Enabling Seamless Connectivity
5
Cost Imposes Reconfigurability
8
132 Multimode Terminals Ask for Hardware Reuse
10
The Power and Spectral Challenge
11
Teaming up with DeepSubmicron Technology
70
Going Reactive and Cognitive
74
432 Zooming in on the Power Detection and AGC Controller
76
Working Horses in a Race for Speed and Power
80
A Suitable Case
81
Going with the Flexibility Stream
88
452 Flexible Solutions in Sight
89
46 Conclusions
93

142 Towards Green Software Defined Radios
12
References
13
Software Defined Radios Enabling Seamless Connectivity for Handheld Devices
15
Dedicated Radios
16
A Designers Ultimate Nightmare
17
215 A Debatable Overview
18
How they Do Not Behave
19
218 MultimodalMultistandard Terminals
20
Standardization Initiatives Paving the Way
21
A Holistic Approach
22
Dynamics are Everywhere
23
Scalability should be Everywhere
24
References
25
SoftwareDefined Radio FrontEnds Scalable Waves in the Air
26
32 SystemLevel Considerations
28
33 Wideband LO Synthesis
30
332 016GHz Quadrature Generation
37
34 Receiver Building Blocks
39
341 MEMSEnabled DualBand LowNoise Amplifier
40
342 Wideband LowNoise Amplifiers
41
343 Wideband Downconversion Mixer
45
344 Flexible Baseband Analog Circuits
46
345 AnalogtoDigital Conversion
51
35 Transmitter Building Blocks
54
36 Calibration Techniques
57
362 DCOffset
58
37 Full SDR Implementation
59
38 Conclusions
61
References
62
SDR Baseband Platforms Opportunism to Combine Flexibility and Low Energy
65
Divide and Conquer
66
Sleeping Waking and Working on Minimal Energy
68
References
94
Software Fuel for Green Radios The Blessing and the Curse
97
Going for Network and Platform Compatibility
98
The Control Room for the SDR
100
The Working Horse for the SDR
101
RealTime Requirements
103
Providing SDR Terminals with Social Skills
105
The 80211n Case
107
56 Future Challenges and Solutions
109
ArchitectureAware Scalable SW
111
57 Conclusions
112
EnergyAware CrossLayer Radio Management Exploit Flexibility for Saving Energy
114
Enable Flexibility and Energy Scalability
118
622 SDR Digital Platform
119
Exploit Flexibility and Scalability for Saving Energy
122
632 CrossLayer PerformanceEnergy Optimization
123
633 Instantiation in a Use Case
126
64 Conclusions
131
References
132
Towards Cognitive Radios Getting the Best Out of the Radio and the Spectrum
135
712 The Need for Intelligent and Adaptive Radio
136
72 New Control Functionality
138
Spectrumcentric View
140
73 New Sensing Functionality
147
74 New Radio Architectures
149
75 Conclusion
150
References
151
Close This is not the End its Just a Beginning
153
83 Challenges Ahead
154
84 Closing Remarks
155
Index
157
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About the author (2008)

Liesbet Van der Perre: received the M. Sc. Degree in Electrical Engineering from the K.U.Leuven, Belgium, in 1992. The research for her thesis was completed at the Ecole Nationale Supérieure de Telecommunications in Paris. She graduated summa cum laude with a PhD in electrical engineering form the same university in 1997. Liesbet earned an award from IBM in 1986, and she received a study-visit scholarship for study in the United States from the Fina Maecenas Foundation.

Her work in the past focused on radio propagation modeling, system design and digital modems for high-speed wireless communications. She was a system architect in IMEC’s OFDM ASICs development, which was nominated as one of the IEEE International Solid State Circuit Conference’s (ISSCC’s) ‘Best of 50 Years’ papers. Consequently, she was the project leader for IMEC’s low power Turbo codec. Currently, she is the scientific director of wireless research group in IMEC’s, comprising teams of researchers in the fields of digital baseband solutions, RF front-ends, cross-layer optimization, mixed-signal design technologies, and ultra low power radios. She’s the project leader for the digital baseband Software Defined Radio, and a public speaking coach for IMEC staff. Also, she was a part-time professor at the University of Antwerp, Belgium, till 2004. She’s an author and co-author of over 150 scientific publications published in conference proceedings, journals, and books.

Jan Craninckx: obtained his Ms. and Ph.D. degree in microelectronics summa cum laude from the ESAT-MICAS laboratories of the Katholieke Universiteit Leuven in 1992 and 1997, respectively. His Ph.D. work was on the design of low-phase noise CMOS integrated VCOs and synthesizers, where he was a pioneer in RFCMOS design. From 1997 till 2002 he worked with Alcatel Microelectronics (now part of STMicroelectronics) as a senior RF engineer on the integration of RF transceivers for GSM, DECT, Bluetooth and WLAN. Since 2002 he is a principal scientist in the wireless research group in IMEC (Leuven, Belgium) where his research interests are in the design of RF transceivers for software defined radio (SDR) systems. Dr. Craninckx has authored and co-authored more than 60 papers, several book chapters and has published one book in the field of analog and RF IC design. He is the inventor of 10 patents, and is a member of the Technical Program Committee for both the ISSCC and ESSCIRC conferences.

Antoine Dejonghe: received the M. Sc. Degree in Electrical Engineering (summa cum laude) and the Ph.D. degree from the Université Catholique de Louvain (UCL), Louvain-la-Neuve, Belgium, in 2000 and 2004, respectively. He was with the Communications and Remote Sensing Laboratory of UCL from 2000 to 2004, as a Research Fellow of the Belgian National Fund for Scientific Research (FNRS). Since 2004, he is Senior Researcher in the Wireless Research Group of the Inter-university Microelectronics Center (IMEC), Leuven, Belgium. His work in the past focused on digital communication system design, with a special emphasis on iterative detection and decoding schemes relying on the so-called turbo principle. He is currently carrying and coordinating research activities in the field of cross-layer optimization for energy-aware multimedia wireless communications, building on SDR-based baseband engines and reconfigurable analog front-ends. He is also looking at the extension of these concepts to cognitive radio systems. Antoine Dejonghe is an author and co-author of over 35 scientific publications.

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