In this document, we provide a tutorial overview of OFDM-PAPR (Peak-to-Average-Power-Ratio) reduc... more In this document, we provide a tutorial overview of OFDM-PAPR (Peak-to-Average-Power-Ratio) reduction techniques that have been published so far. It is not intended to be exhaustive, but merely to provide a comprehensive description of the basics behind the major methods without detail of the many variations and implementations that are described in the publications cited in the present document and the references therein.
A 40 pages synthetic description of the major algorithms proposed to reduce the OFDM the Peak-to-... more A 40 pages synthetic description of the major algorithms proposed to reduce the OFDM the Peak-to-Average-Power Ratio (PAPR) giving basic understanding about the ideas beyond each of them. Huge references are given and the citations therein. Wish You nice reading. Warm Regards. Denis J.G. Mestdagh.
ABSTRACT At present, Discrete Multi-Tone (DMT)
transceivers receive much attention for the implem... more ABSTRACT At present, Discrete Multi-Tone (DMT) transceivers receive much attention for the implementation of Asymmetric Digital Subscriber Lines (ADSL). This paper analyzes the effect of clipping a DMT-signal, i.e. limiting the signal's maximum amplitude. An exact expression is given for the signal-to-noise ratio (SN.) degradation due to clipping alone. By combining this expression with the well-known expression for the quantization noise in the AID-DIA converters, it is shown how clipping can reduce the number of bits of AID-DIA converters as well as the dynamical range of the line drivers while keeping the overall SNR the same as without clipping.
ABSTRACT At present, Discrete Multi-Tone (DMT)
transceivers receive much attention for the implem... more ABSTRACT At present, Discrete Multi-Tone (DMT) transceivers receive much attention for the implementation of Asymmetric Digital Subscriber Lines (ADSL). This paper analyzes the effect of clipping a DMT-signal, i.e. limiting the signal's maximum amplitude. An exact expression is given for the signal-to-noise ratio (SN.) degradation due to clipping alone. By combining this expression with the well-known expression for the quantization noise in the AID-DIA converters, it is shown how clipping can reduce the number of bits of AID-DIA converters as well as the dynamical range of the line drivers while keeping the overall SNR the same as without clipping.
We overview a digital duplex scheme called
Zipper, intended for DMT-based VDSL systems.
The Zippe... more We overview a digital duplex scheme called Zipper, intended for DMT-based VDSL systems. The Zipper multicarrier duplex scheme represents a breakthrough toward digital implementation of frequency-division duplexing. A duplex scheme is a method to divide the capacity of a line between the upstream and downstream directions. Zipper divides the available bandwidth by assigning different subcarriers for the different directions. As a prerequisite, DMT symbols are extended with an additional cyclic suffix, and are shaped at both transmitter and receiver. Zipper is characterized by high flexibility and high spectral compatibility with programmable spectrum usage, robustness against frequency-selective impairments such as radio frequency interference and bridge taps, interoperability with ADSL, and high spectral efficiency since no guard bands are needed.
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Papers by Denis Mestdagh
transceivers receive much attention for the implementation of
Asymmetric Digital Subscriber Lines (ADSL). This paper
analyzes the effect of clipping a DMT-signal, i.e. limiting the
signal's maximum amplitude. An exact expression is given for
the signal-to-noise ratio (SN.) degradation due to clipping
alone. By combining this expression with the well-known
expression for the quantization noise in the AID-DIA
converters, it is shown how clipping can reduce the number of
bits of AID-DIA converters as well as the dynamical range of
the line drivers while keeping the overall SNR the same as
without clipping.
transceivers receive much attention for the implementation of
Asymmetric Digital Subscriber Lines (ADSL). This paper
analyzes the effect of clipping a DMT-signal, i.e. limiting the
signal's maximum amplitude. An exact expression is given for
the signal-to-noise ratio (SN.) degradation due to clipping
alone. By combining this expression with the well-known
expression for the quantization noise in the AID-DIA
converters, it is shown how clipping can reduce the number of
bits of AID-DIA converters as well as the dynamical range of
the line drivers while keeping the overall SNR the same as
without clipping.
Zipper, intended for DMT-based VDSL systems.
The Zipper multicarrier duplex scheme represents
a breakthrough toward digital implementation
of frequency-division duplexing. A duplex
scheme is a method to divide the capacity of a
line between the upstream and downstream
directions. Zipper divides the available bandwidth
by assigning different subcarriers for the
different directions. As a prerequisite, DMT
symbols are extended with an additional cyclic
suffix, and are shaped at both transmitter and
receiver. Zipper is characterized by high flexibility
and high spectral compatibility with programmable
spectrum usage, robustness against
frequency-selective impairments such as radio
frequency interference and bridge taps, interoperability
with ADSL, and high spectral efficiency
since no guard bands are needed.