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Technologies Enabling Future Mobile Connectivity & Sensing
This book explains concepts behind fractional subsampling-based
frequency synthesis that is re-shaping today's art in the field of
low-noise LO generation. It covers advanced material, giving clear
guidance for development of background-calibrated environments
capable of spur-free synthesis and wideband phase modulation. It
further expands the concepts into the field of subsampling polar
transmission, where the newly developed architecture enables
unprecedented spectral efficiency levels, unquestionably required
by the upcoming generation of wireless standards.
This book introduces a completely novel architecture that can relax
the trade-off existing today between noise, power and area
consumption in a very suitable solution for advanced wireless
communication systems. Through the combination of charge-domain
operation with incremental signaling, this architecture gives the
best of both worlds, providing the reduced area and high
portability of digital-intensive architectures with an improved
out-of-band noise performance given by intrinsic noise filtering
capabilities. Readers will be enabled to design higher performance
radio front-ends that consume less power and area, especially with
respect to the transmitter and power amplifier designs, considered
by many the "battery killers" on most mobile devices.
This book introduces a completely novel architecture that can relax
the trade-off existing today between noise, power and area
consumption in a very suitable solution for advanced wireless
communication systems. Through the combination of charge-domain
operation with incremental signaling, this architecture gives the
best of both worlds, providing the reduced area and high
portability of digital-intensive architectures with an improved
out-of-band noise performance given by intrinsic noise filtering
capabilities. Readers will be enabled to design higher performance
radio front-ends that consume less power and area, especially with
respect to the transmitter and power amplifier designs, considered
by many the "battery killers" on most mobile devices.
This is the first book to describe most of the issues involved
in the transition from a single standard to a Software Radio based
wireless terminal. The book is both a technology tutorial for
beginners as well as a starting point for technical professionals
in the communication and IC design industry who are approaching the
design of a Software Defined Radio. A complete overview of the
actual state-of-art for reconfigurable transceivers is given in
detail.
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.
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.
By the end of this decade, a 4G wireless terminal will be available
that provides high quality multimedia, personalized services, and
ubiquitous multi-standard broadband connectivity with a reasonable
power consumption. In this context, a multi-band transceiver is
needed that provides a high-level of programmability while keeping
low design complexity and costs. Software Defined Radio (SDR) is
the most promising technology to implement such a terminal as it
enables multi-mode reception by tuning to any frequency band, by
selecting any channel bandwidth, and by detecting any
modulation.This volume aims to describe the transition towards a
Software Radio from the analog design perspective. As the original
idea of a full-digital Software Radio is far from the state-of-art,
an analog front-end is still needed to achieve a feasible
implementation.
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