Results 251 to 260 of about 261,383 (301)

Analysis of the Peak-To-Average Power Ratio of the Oversampled Ofdm

2006 IEEE International Conference on Acoustics Speed and Signal Processing Proceedings, 2006
The oversampled OFDM modulation is a possible alternative to conventional OFDM for the transmission of signals over multipath fading channels. Indeed with oversampled OFDM, appropriate pulse-shaping can be introduced to fight against time and frequency dispersion.
Alexandre Skrzypczak, Pierre Siohan, Jean-Philippe Javaudin   +2 more
openaire   +1 more source

Calculation of peak-to-average power ratio in DVB-T

47th International Symposium ELMAR, 2005., 2005
Extremely high peak power values are the major problem in digital terrestrial television (DVB-T). They are caused by multi-carrier modulation COFDM (Coded Orthogonal Frequency Division Multiplex). This paper contains analysis of this problem from the aspect of theoretical peak power maximum and statistical analysis of the problem where DVB-T parameters
Perčin, Domagoj, Kezan, Zoran, Zovko-Cihlar, Branka   +2 more
openaire   +2 more sources

Analysis of the Peak-To-Average Power Ratio for OFDM/OQAM

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, 2006
OFDM/OQAM is now a recognized alternative to conventional OFDM for the transmission of signals over multipath fading channels. Indeed with OFDM/OQAM an appropriate pulse-shaping can be introduced to fight against time and frequency dispersion. This paper focuses on a theoretical and experimental analysis of the peak-to-average power ratio (PAPR) for ...
Skrzypczack, Alexandre, Siohan, Pierre, Javaudin, Jean-Philippe   +2 more
openaire   +2 more sources

Methods for Peak to Average Power Ratio Reduction on SCFDMA

Proceedings of the SouthEast European Design Automation, Computer Engineering, Computer Networks and Social Media Conference, 2016
Single Carrier Frequency Division Multiple Access (SCFDMA) is currently adopted by 3GPP in the LTE cellular systems for the uplink due to its high data rate and low peak-to-average power-ratio (PAPR). In this work, the PAPR for IFDMA (Interleaved Frequency Division Multiple Access), LFDMA (Localized Frequency Division Multiple Access), and DFDMA ...
Athanasios Bimpiris, Angelos Michalas
openaire   +1 more source

On Peak-to-Average Power Ratio Optimization for Coded APSK

2018 15th International Symposium on Wireless Communication Systems (ISWCS), 2018
The symmetric information rate is used to define the relationship between the APSK constellation parameters, the code rate, and the average and peak E b /N 0 . Minimizing the average E b /N 0 reproduces the DVB-S2 constellation parameters for 16- and 32-APSK.
Farah Arabian, Willie K. Harrison, Chad Josephson, Michael Rice, Erik Perrins   +4 more
openaire   +1 more source

Peak-to-average power ratio analysis of LDM signals

2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, 2015
Layered Division Multiplexing (LDM) is as a new technical solution for multiplexing different services over the same RF channel. it has already been accepted as a baseline technology for the new generation ATSC 3.0 digital terrestrial television (DTT) standard.
Jon Montalban, Jon Barrueco, Itziar Angulo, Liang Zhang 0001, Yiyan Wu 0001, Wei Li 0037, Heung Mook Kim, Sung Ik Park, Jae-Young Lee 0001   +8 more
openaire   +1 more source

Peak-to-average power ratio in high-order OFDM

IEEE Transactions on Communications, 2001
Summary: The problem of Peak-to-Average Power Ratio (PAPR) of high-order Orthogonal Frequency-Division Modulation (OFDM) is considered. Using results on level crossing of random processes, an upper bound on the probability that the PAPR of an OFDM signal will exceed a given value is derived.
Nati Dinur, Dov Wulich
openaire   +2 more sources

On signals with very high peak-to-average power ratio

International Symposium onInformation Theory, 2004. ISIT 2004. Proceedings., 2004
This paper address the problem of classification of BPSK-modulated multicarrier signals with the peak-to-average power ratio (PAPR) exceeding 3/4 of the maximal possible value. By providing a simple characterization of such signals, an upper bound on their number are derived and propose a simple sufficient condition for the signals to have low PAPR ...
Gregory Freiman, Simon Litsyn, Alexander A. Yudin   +2 more
openaire   +1 more source

Peak-to-Average Power Ratio Reduction in MIMO OFDM

2007 IEEE International Conference on Communications, 2007
Peak-to-average power ratio (PAR) reduction in OFDM using antenna arrays (MIMO OFDM) is considered. In particular, generalizations of selected mapping (SLM) recently proposed in literature, are studied, and a new version, we call it directed SLM (dSLM), is introduced.
Robert F. H. Fischer, Martin Hoch
openaire   +1 more source

Peak to Average Power Ratio sensor for green Cognitive Radio

21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2010
High Peak to Average Power Ratio (PAPR) is a critical issue in multi-standard and multi-carrier communication systems. This problem can result in large performance degradation due to the non-linearity of the High Power Amplifier (HPA) or in low power efficiency.
Palicot, Jacques, Louët, Yves, Mroue, Mohamad   +2 more
openaire   +2 more sources