Wilfried Gappmair

According to our database, Wilfried Gappmair authored at least 56 papers between 1999 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2024

Recent Trends and Advances in Telecommunications and Sensing.

Erich Leitgeb, Maja Matijasevic, Wilfried Gappmair, Mario Kusek

Sensors, August, 2024

Novel Results on SNR Estimation for Bandlimited Optical Intensity Channels.

Wilfried Gappmair

Sensors, 2024

2023

Non-Data-Aided SNR Estimation for Bandlimited Optical Intensity Channels.

Wilfried Gappmair

Sensors, January, 2023

2022

Data-Aided SNR Estimation for Bandlimited Optical Intensity Channels.

Wilfried Gappmair

Sensors, 2022

Satellite and space technology.

Wilfried Gappmair

Elektrotech. Informationstechnik, 2022

2021

3Time Jitter Influence on the Performance of PPM or PAM SIMO FSO Links over M-Turbulence Channels.

Panagiotis J. Gripeos, Hector E. Nistazakis, George K. Varotsos, Wilfried Gappmair, Andreas D. Tsigopoulos

Proceedings of the 16th International Conference on Telecommunications, 2021

2020

Asymptotic CRLB for Blind Symbol Rate Estimation in Digital Satellite Receivers.

Barbara Suesser-Rechberger, Wilfried Gappmair

Proceedings of the 12th International Symposium on Communication Systems, 2020

Blind Symbol Timing Estimation for Bandlimited Optical Intensity Channels.

Wilfried Gappmair, Hector E. Nistazakis

Proceedings of the 12th International Symposium on Communication Systems, 2020

2019

Coarse recovery of carrier frequency and symbol timing in multibeam satellite channels.

Wilfried Gappmair, Karin Plimon, Alberto Ginesi

Int. J. Satell. Commun. Netw., 2019

SIMO subcarrier PSK FSO links with phase noise and non-zero boresight pointing errors over turbulence channels.

George K. Varotsos, Hector E. Nistazakis, Wilfried Gappmair, Harilaos G. Sandalidis, George S. Tombras

IET Commun., 2019

On Parameter Estimation for Bandlimited Optical Intensity Channels.

Wilfried Gappmair

Comput., 2019

Some Notes on Phase Noise Generation and the Impact on DVB-S2x Waveforms.

Harald Schlemmer, Johannes Ebert, Tobias Taenzer, Wilfried Gappmair

Proceedings of the 15th International Conference on Telecommunications, 2019

2018

Joint recovery of carrier frequency and symbol timing for extremely bandwidth-efficient satellite links.

Wilfried Gappmair, Karin Plimon, Johannes Ebert, Michael Bergmann

IET Commun., 2018

New Results on Symbol Rate Estimation in Digital Satellite Receivers.

Barbara Suesser-Rechberger, Wilfried Gappmair

Proceedings of the 11th International Symposium on Communication Systems, 2018

Multi-User Detection Performance Demonstrator for Realistic High Throughput Satellite Systems.

Karin Plimon, Johannes Ebert, Nemanja Stamenic, Harald Schlemmer, Màrius Caus, Wilfried Gappmair, Martina Angelone, Alberto Ginesi

Proceedings of the 11th International Symposium on Communication Systems, 2018

Interference-Dependent Performance of Multi-User Detection in High Throughput Satellite Systems.

Karin Plimon, Johannes Ebert, Wilfried Gappmair, Martina Angelone, Alberto Ginesi

Proceedings of the 11th International Symposium on Communication Systems, 2018

2017

Cramer-Rao lower bound and parameter estimation for multibeam satellite links.

Wilfried Gappmair, Alberto Ginesi

Int. J. Satell. Commun. Netw., 2017

Average error performance in Subcarrier PSK FSO links over weak turbulence channels with spatial jitter and phase noise.

George K. Varotsos, Hector E. Nistazakis, George S. Tombras, Wilfried Gappmair

Proceedings of the 6th International Conference on Modern Circuits and Systems Technologies, 2017

An efficient receiver architecture for burst reception at very low SNR.

Johannes Ebert, Harald Schlemmer, Eral Türkyilmaz, Juan Rivera-Castro, Stefano Cioni, Wilfried Gappmair

Proceedings of the 14th International Conference on Telecommunications, 2017

2016

Jitter floor elimination for blind feedforward/feedback symbol-timing recovery exploiting the extended zero-crossing property.

Wilfried Gappmair, Stefano Cioni, Giovanni Emanuele Corazza, Otto Koudelka

Int. J. Satell. Commun. Netw., 2016

Performance of Walsh-Hadamard codes used for timing recovery in a DVB-S2x multibeam scenario.

Barbara Suesser-Rechberger, Wilfried Gappmair, Alberto Ginesi

Proceedings of the 10th International Symposium on Communication Systems, 2016

Modified CRLB and low-complex estimator for symbol timing recovery in direct-conversion receivers.

Wilfried Gappmair, Otto Koudelka

Proceedings of the 10th International Symposium on Communication Systems, 2016

Joint synchronization of symbol timing and carrier frequency using the extended zero-crossing property.

Wilfried Gappmair, Harald Schlemmer, Alberto Ginesi

Proceedings of the 8th Advanced Satellite Multimedia Systems Conference and the 14th Signal Processing for Space Communications Workshop, 2016

2015

Cramér-Rao Bounds for SNR Estimation of Oversampled Linearly Modulated Signals.

Roberto López-Valcarce, Javier Villares, Jaume Riba, Wilfried Gappmair, Carlos Mosquera

IEEE Trans. Signal Process., 2015

Estimation of carrier and channel parameters in time-selective fading channels.

Wilfried Gappmair, Michael Bergmann

IET Commun., 2015

2014

New Results on Location-Aware Channel Estimation for Multibeam Satellite Links.

Wilfried Gappmair, Michael Bergmann, Barbara Suesser-Rechberger

IEEE Commun. Lett., 2014

Open-Loop Analysis of a Nonlinearly Modified Gardner Synchronizer.

Wilfried Gappmair

IEEE Commun. Lett., 2014

Robustness analysis of location-aware channel estimation on multibeam satellite links.

Barbara Suesser-Rechberger, Michael Bergmann, Gerald Hörack, Wilfried Gappmair

Proceedings of the 9th International Symposium on Communication Systems, 2014

Blind symbol timing recovery in the presence of IQ mismatch and DC offset.

Wilfried Gappmair, Otto Koudelka

Proceedings of the 9th International Symposium on Communication Systems, 2014

Parameter estimation for link adaptation on land-mobile satellite links.

Michael Bergmann, Wilfried Gappmair, Otto Koudelka

Proceedings of the 9th International Symposium on Communication Systems, 2014

A novel approach for symbol timing estimation based on the extended zero-crossing property.

Wilfried Gappmair, Stefano Cioni, Giovanni Emanuele Corazza, Otto Koudelka

Proceedings of the 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop, 2014

2012

Novel results on pulse-position modulation performance for terrestrial free-space optical links impaired by turbulent atmosphere and pointing errors.

Wilfried Gappmair

IET Commun., 2012

CRLB and low-complex algorithm for joint estimation of carrier frequency/phase and IQ imbalance in direct-conversion receivers.

Wilfried Gappmair, Otto Koudelka

Proceedings of the 8th International Symposium on Communication Systems, 2012

Estimation of carrier and channel parameters for land-mobile satellite channels.

Wilfried Gappmair, Michael Bergmann, Otto Koudelka

Proceedings of the 6th Advanced Satellite Multimedia Systems Conference and 12th Signal Processing for Space Communications Workshop, 2012

The code-aided FEPE algorithm for joint frequency and phase estimation at Low SNR.

Johannes Ebert, Harald Schlemmer, Wilfried Gappmair

Proceedings of the 6th Advanced Satellite Multimedia Systems Conference and 12th Signal Processing for Space Communications Workshop, 2012

2011

Comment on "An Exact Performance Analysis of MRC/OSTBC over Generalized Fading Channels".

Wilfried Gappmair

IEEE Trans. Commun., 2011

Further results on the capacity of free-space optical channels in turbulent atmosphere.

Wilfried Gappmair

IET Commun., 2011

OOK Performance for Terrestrial FSO Links in Turbulent Atmosphere with Pointing Errors Modeled by Hoyt Distributions.

Wilfried Gappmair, Steve Hranilovic, Erich Leitgeb

IEEE Commun. Lett., 2011

Blind Demodulation Framework for Satellite Signals.

Markus Flohberger, Wilfried Gappmair, Otto Koudelka

Proceedings of the Personal Satellite Services - Third International ICST Conference, 2011

Channel Estimation on the Forward Link of Multi-beam Satellite Systems.

Michael Bergmann, Wilfried Gappmair, Carlos Mosquera, Otto Koudelka

Proceedings of the Personal Satellite Services - Third International ICST Conference, 2011

Hybrid Space-Ground Processing for High-Capacity Multi-Beam Satellite Systems.

J. Arnau-Yanez, Michael Bergmann, Enzo Alberto Candreva, Giovanni Emanuele Corazza, Riccardo De Gaudenzi, D. Devillers, Wilfried Gappmair, Francesco Lombardo, Carlos Mosquera, Ana I. Pérez-Neira, Ilaria Thibault, Alessandro Vanelli-Coralli

Proceedings of the Global Communications Conference, 2011

2010

Joint NDA Estimation of Carrier Frequency/Phase and SNR for Linearly Modulated Signals.

Wilfried Gappmair, Roberto López-Valcarce, Carlos Mosquera

IEEE Signal Process. Lett., 2010

Performance of PPM on terrestrial FSO links with turbulence and pointing errors.

Wilfried Gappmair, Steve Hranilovic, Erich Leitgeb

IEEE Commun. Lett., 2010

Transmission Systems Exact analysis of different detector algorithms for NDA carrier phase recovery of 16/32-APSK signals.

Wilfried Gappmair, Stefano Cioni, Alessandro Vanelli-Coralli, Otto Koudelka

Eur. Trans. Telecommun., 2010

Transmission Systems Open-loop analysis and self-noise performance of an NDA synchroniser for carrier-independent symbol timing recovery at baud rate.

Wilfried Gappmair

Eur. Trans. Telecommun., 2010

CRLB and ML algorithm for joint recovery of carrier phase and IQ imbalance.

Wilfried Gappmair, Otto Koudelka

Proceedings of the 7th International Symposium on Communication Systems Networks and Digital Signal Processing, 2010

2009

Error performance of coded FSO links in turbulent atmosphere modeled by gamma-gamma distributions.

Wilfried Gappmair, Markus Flohberger

IEEE Trans. Wirel. Commun., 2009

Cramer-Rao lower bound and EM algorithm for envelope-based SNR estimation of nonconstant modulus constellations.

Wilfried Gappmair, Roberto López-Valcarce, Carlos Mosquera

IEEE Trans. Commun., 2009

2008

Cramer-Rao Lower Bound for Non-Data-Aided SNR Estimation of Linear Modulation Schemes.

Wilfried Gappmair

IEEE Trans. Commun., 2008

2006

Extended Gardner Detector for Improved Symbol-Timing Recovery of M-PSK Signals.

Wilfried Gappmair, Stefano Cioni, Giovanni Emanuele Corazza, Otto Koudelka

IEEE Trans. Commun., 2006

Transmission Systems Acquisition performance for NDA symbol-timing recovery with simple adaptive first-order loops.

Wilfried Gappmair, Markus Flohberger, Otto Koudelka

Eur. Trans. Telecommun., 2006

2005

Information Theory Extended analysis of Viterbi-Viterbi synchronizers.

Wilfried Gappmair

Eur. Trans. Telecommun., 2005

Software-Radio Architecture for Preambleless Acquisition of Frame, Carrier and Timing in MF-TDMA Modems.

Wolfgang Kogler, Wilfried Gappmair, Otto Koudelka

Proceedings of the 2nd IEEE International Symposium on Wireless Communication Systems, 2005

Symbol-Timing Recovery with Modified Gardner Detectors.

Wilfried Gappmair, Stefano Cioni, Giovanni Emanuele Corazza, Otto Koudelka

Proceedings of the 2nd IEEE International Symposium on Wireless Communication Systems, 2005

2003

An efficient prime-length DFT algorithm over finite fields GF(2^<i>m</i>).

Wilfried Gappmair

Eur. Trans. Telecommun., 2003

1999

Claude E. Shannon: the 50th anniversary of information theory.

Wilfried Gappmair

IEEE Commun. Mag., 1999