Nikos C. Sagias

82 papers B 10Journal 58Unranked 14
YearRankTypeTitle / Venue / Authors
2025 J jnl
A Machine Learning-Based Heart Disease Detection Scheme for Predicting Spontaneous Termination of Atrial Fibrillation.
IEEE Access
Anastasios G. Skrivanos, Ioannis Kouretas, Spyridon K. Chronopoulos, Vasilis Christofilakis, Nikos C. Sagias, Kostas P. Peppas
2025 J jnl
Performance Analysis in the D-Band: A Pearson Type I Distribution Approach for Indoor and Outdoor Environments.
IEEE Trans. Commun.
Dimitrios G. Selimis, Mar Francis D. De Guzman, Katsuyuki Haneda, Nikos C. Sagias, Fotis I. Lazarakis, Kostas P. Peppas
2024 J jnl
BEP evaluation of 5G LDPC codes in a pre-amplified optical PPM receiver.
Phys. Commun.
Konstantinos Yiannopoulos, Nikos C. Sagias
2023 J jnl
A New Family of Nyquist Pulses With Improved Performance.
IEEE Access
Kyriakos D. Gazouleas, Nikos C. Sagias, Michael C. Batistatos, Kostas P. Peppas
2022 J jnl
Error rates of arbitrary order optical wireless pulse-position modulation: An efficient approach.
Phys. Commun.
Konstantinos Yiannopoulos, Nikos C. Sagias, Anthony C. Boucouvalas
2021 J jnl
Characteristics of Recent Aftershocks Sequences (2014, 2015, 2018) Derived from New Seismological and Geodetic Data on the Ionian Islands, Greece.
Data
Alexandra Moshou, Panagiotis Argyrakis, Antonios Konstantaras, Anna-Christina Daverona, Nikos C. Sagias
2020 — conf
Impact of Pointing Errors and Fading in a Pre-Amplified Pulse Position Modulation Optical Receiver.
CSNDSP
Konstantinos Yiannopoulos, Nikos C. Sagias, Anthony C. Boucouvalas
2019 J jnl
On the photon counting error probability and its application in optical wireless communications.
Phys. Commun.
Konstantinos Yiannopoulos, Nikos C. Sagias, Anthony C. Boucouvalas
2019 J jnl
Unified Ergodic Capacity Expressions for AF Dual-Hop Systems With Hardware Impairments.
IEEE Commun. Lett.
Georgia P. Karatza, Kostas P. Peppas, Nikos C. Sagias, George V. Tsoulos
2018 J jnl
An analytical framework in LEO mobile satellite systems servicing batched Poisson traffic.
IET Commun.
Ioannis D. Moscholios, Vassilios G. Vassilakis, Panagiotis G. Sarigiannidis, Nikos C. Sagias, Michael D. Logothetis
2018 J jnl
Effective Capacity of Multisource Multidestination Cooperative Systems Under Cochannel Interference.
IEEE Trans. Veh. Technol.
Georgia P. Karatza, Kostas P. Peppas, Nikos C. Sagias
2018 J jnl
On Channel Sharing Policies in LEO Mobile Satellite Systems.
IEEE Trans. Aerosp. Electron. Syst.
Ioannis D. Moscholios, Vassilios G. Vassilakis, Nikos C. Sagias, Michael D. Logothetis
2017 — conf
An Arduino-based subsystem for controlling UAVs through GSM.
MOCAST
George N. Solidakis, Fanourios M. Tsokas, Michael C. Batistatos, Nikos C. Sagias, George V. Tsoulos, Dimitra Zarbouti, Georgia E. Athanasiadou
2017 J jnl
On the Statistics of the Error Propagation Effect of Binary Differential Phase-Shift Keying.
IEEE Wirel. Commun. Lett.
Nikos C. Sagias, Ranjan K. Mallik
2016 — conf
Optimal combiners in optical wireless systems with spatial diversity and pre-amplification.
ICC Workshops
Konstantinos Yiannopoulos, Nikos C. Sagias, Anthony C. Boucouvalas, Murat Uysal, Zabih Ghassemlooy
2016 J jnl
Physical Layer Security for Multiple-Antenna Systems: A Unified Approach.
IEEE Trans. Commun.
Kostas P. Peppas, Nikos C. Sagias, Andreas M. Maras
2015 J jnl
On the Performance of Semiconductor Optical Amplifier-Assisted Outdoor Optical Wireless Links.
IEEE J. Sel. Areas Commun.
Konstantinos Yiannopoulos, Nikos C. Sagias, Anthony C. Boucouvalas
2015 — conf
Semiconductor optical amplifier-assisted optical wireless links: The effect of noise and turbulence.
ICC
Konstantinos Yiannopoulos, Nikos C. Sagias, Anthony C. Boucouvalas
2014 B conf
Asymptotic analysis for dual-hop communication networks with PSK and imperfect CSI.
WCNC
Nikos C. Sagias, Ranjan K. Mallik, Nikolaos D. Tselikas
2014 — conf
Bit-error-rate performance of semiconductor optical amplifiers in negative exponential fading.
CAMAD
Nikos C. Sagias, Kostas Yiannopoulos, Anthony C. Boucouvalas
2014 — conf
Equalization of negative-exponential fading in saturated semiconductor optical amplifiers.
CSNDSP
Konstantinos Yiannopoulos, Nikos C. Sagias, Anthony C. Boucouvalas
2014 — conf
Minimizing packet loss in high-mobility radio-over-fiber networks.
CSNDSP
Evangelos A. Kosmatos, Nikolaos D. Tselikas, Nikos C. Sagias
2014 J jnl
On the ASEP of Decode-and-Forward Dual-Hop Networks with Pilot-Symbol Assisted M-PSK.
IEEE Trans. Commun.
Nikos C. Sagias
2014 B conf
SOA nonlinear amplification: A promising fade mitigation technique for optical wireless systems.
WCNC
Kostas Yiannopoulos, Nikos C. Sagias, Anthony C. Boucouvalas
2012 J jnl
Serial relaying communications over generalized-gamma fading channels.
Wirel. Commun. Mob. Comput.
Christos Datsikas, Kostas Peppas, Nikos C. Sagias, George S. Tombras
2011 J jnl
Distribution of Inner Product of Complex Gaussian Random Vectors and its Applications.
IEEE Trans. Commun.
Ranjan K. Mallik, Nikos C. Sagias
2011 J jnl
Dual-hop multi-input multi-output relay systems over spatially correlated Nakagami-m fading channels.
IET Commun.
Kostas Peppas, Christos Datsikas, Nikos C. Sagias, George S. Tombras
2011 J jnl
Higher Order Capacity Statistics of Diversity Receivers.
Wirel. Pers. Commun.
Nikos C. Sagias, Fotis I. Lazarakis, Antonis Alexandridis, Kostas Dangakis, George S. Tombras
2011 J jnl
On the Sum of Kappa Stochastic Variates and Applications to Equal-Gain Combining.
IEEE Trans. Commun.
Petros S. Bithas, Nikos C. Sagias, Ranjan K. Mallik
2010 — conf
Bit Error and Outage Probability of Serial Relaying Communication Systems.
Panhellenic Conference on Informatics
Christos Datsikas, Kostas P. Peppas, Nikos C. Sagias, Nikolaos D. Tselikas, George S. Tombras
2010 J jnl
Error Rate Performance of Multilevel Signals with Coherent Detection.
IEEE Trans. Commun.
Nikos C. Sagias, Ranjan K. Mallik, George S. Tombras
2010 J jnl
Serial Free-Space Optical Relaying Communications Over Gamma-Gamma Atmospheric Turbulence Channels.
JOCN
Christos Datsikas, Kostas P. Peppas, Nikos C. Sagias, George S. Tombras
2010 — conf
Software and Middleware Technologies Based on Open APIs and Protocols for Modern Service Provision in Telecoms.
Panhellenic Conference on Informatics
Nikolaos D. Tselikas, George S. Tselikis, Nikos C. Sagias
2010 J jnl
Spectral efficiency of adaptive transmission and selection diversity on generalised fading channels.
IET Commun.
Petros S. Bithas, George P. Efthymoglou, Nikos C. Sagias
2010 J jnl
Switch-and-Examine Diversity Over Arbitrarily Correlated Nakagami- Fading Channels.
IEEE Trans. Veh. Technol.
George C. Alexandropoulos, P. Takis Mathiopoulos, Nikos C. Sagias
2009 J jnl
A trivariate nakagami-m distribution with arbitrary covariance matrix and applications to generalized-selection diversity receivers.
IEEE Trans. Commun.
Kostas Peppas, Nikos C. Sagias
2009 J jnl
E-CLEMA: A cross-layer design for improved quality of service in mobile WiMAX networks.
Wirel. Commun. Mob. Comput.
Dionysia Triantafyllopoulou, Nikos I. Passas, Lazaros F. Merakos, Nikos C. Sagias, P. Takis Mathiopoulos
2009 J jnl
New results for the multivariate Nakagami-m fading model with arbitrary correlation matrix and applications.
IEEE Trans. Wirel. Commun.
George C. Alexandropoulos, Nikos C. Sagias, Fotis I. Lazarakis, Kostas Berberidis
2009 J jnl
The bivariate generalized-Kappa (Kappa
IEEE Trans. Commun.
Petros S. Bithas, Nikos C. Sagias, P. Takis Mathiopoulos
2009 J jnl
The trivariate and quadrivariate weibull fading distributions with arbitrary correlation and their applications to diversity reception.
IEEE Trans. Commun.
Zafiro G. Papadimitriou, P. Takis Mathiopoulos, Nikos C. Sagias
2008 J jnl
Correction to "Error Rate Analysis of Threshold-Based Hybrid Selection/Maximal-Ratio Combining over Correlated Nakagami-m Fading Channels".
IEEE Commun. Lett.
Nikos C. Sagias, Kostas Peppas
2008 B conf
Error Rate Performance of Multilevel Signals with Coherent Detection.
GLOBECOM
Nikos C. Sagias, Ranjan K. Mallik, George S. Tombras
2008 — conf
Error performance of triple-branch generalized selection diversity over Nakagami fading channels.
ISWPC
Kostas Peppas, Nikos C. Sagias, Fotis I. Lazarakis, Antonis A. Alexandridis, Kostas Dangakis
2008 J jnl
On the Correlated -Distribution With Arbitrary Fading Parameters.
IEEE Signal Process. Lett.
Petros S. Bithas, Nikos C. Sagias, P. Takis Mathiopoulos, Stavros A. Kotsopoulos, Andreas M. Maras
2008 J jnl
Outage Analysis of Decode-and-Forward Relaying Over Nakagami- Fading Channels.
IEEE Signal Process. Lett.
Nikos C. Sagias, Fotis I. Lazarakis, George S. Tombras, Christos Datsikas
2008 J jnl
Performance analysis of dual-diversity receivers over correlated generalised Gamma fading channels.
IET Commun.
Petros S. Bithas, Nikos C. Sagias, Theodoros A. Tsiftsis
2007 J jnl
Closed-Form Analysis of Equal-Gain Diversity in Wireless Radio Networks.
IEEE Trans. Veh. Technol.
Nikos C. Sagias
2007 J jnl
Comments on "Average LCR and AFD for SC diversity over correlated Weibull fading channels".
Wirel. Pers. Commun.
Nikos C. Sagias, George K. Karagiannidis
2007 J jnl
Dual diversity over correlated Ricean fading channels.
J. Commun. Networks
Petros S. Bithas, Nikos C. Sagias, P. Takis Mathiopoulos
2007 B conf
Dual-Hop Relaying Networks over Nakagami-M Fading Channels.
PIMRC
Christos Datsikas, George S. Tombras, Nikos C. Sagias, Fotis I. Lazarakis, George C. Alexandropoulos, Antonis A. Alexandridis, Kostas Dangakis
2007 J jnl
Error rate analysis of threshold-based hybrid selection/maximal-ratio diversity over correlated nakagami-m fading channels.
IEEE Commun. Lett.
Nikos C. Sagias, Kostas Peppas
2007 J jnl
GSC diversity receivers over generalized-gamma fading channels.
IEEE Commun. Lett.
Petros S. Bithas, Nikos C. Sagias, P. Takis Mathiopoulos
2007 B conf
Householder-Matrices based Analysis of SC Receivers over Rayleigh Fading Channels with Arbitrary Correlation.
PIMRC
George C. Alexandropoulos, Kostas Berberidis, Nikos C. Sagias, Fotis I. Lazarakis, Antonis A. Alexandridis, Kostas Dangakis
2007 J jnl
Nast Nakagami: A Novel Stochastic Model for Cascaded Fading Channels.
IEEE Trans. Commun.
George K. Karagiannidis, Nikos C. Sagias, P. Takis Mathiopoulos
2007 B conf
New Results on SC and MRC Over Nakagami-m Fading Channels with Arbitrary Correlation Matrix.
GLOBECOM
George C. Alexandropoulos, Nikos C. Sagias, Fotis I. Lazarakis, Kostas Berberidis
2007 B conf
On the Sum of Squared Correlated Rayleigh Variates and Applications to Maximal-Ratio Diversity.
PIMRC
George C. Alexandropoulos, Kostas Berberidis, Nikos C. Sagias, Fotis I. Lazarakis, Christos Datsikas, Antonis A. Alexandridis, Kostas Dangakis
2007 J jnl
On the cascaded Weibull fading channel model.
J. Frankl. Inst.
Nikos C. Sagias, George S. Tombras
2006 J jnl
Closed-form statistics for the sum of squared Nakagami-m variates and its applications.
IEEE Trans. Commun.
George K. Karagiannidis, Nikos C. Sagias, Theodoros A. Tsiftsis
2006 J jnl
Communication Theory Capacity of dual-branch selection diversity receivers in correlative Weibull fading.
Eur. Trans. Telecommun.
Nikos C. Sagias
2006 — conf
Multihop Free-Space Optical Communications Over Strong Turbulence Channels.
ICC
Theodoros A. Tsiftsis, Harilaos G. Sandalidis, George K. Karagiannidis, Nikos C. Sagias
2006 J jnl
On the performance analysis of digital communications over generalized-K fading channels.
IEEE Commun. Lett.
Petros S. Bithas, Nikos C. Sagias, P. Takis Mathiopoulos, George K. Karagiannidis, Athanasios A. Rontogiannis
2006 J jnl
On the performance analysis of equal-gain diversity receivers over generalized gamma fading channels.
IEEE Trans. Wirel. Commun.
Nikos C. Sagias, George K. Karagiannidis, P. Takis Mathiopoulos, Theodoros A. Tsiftsis
2005 J jnl
A closed-form upper-bound for the distribution of the weighted sum of Rayleigh variates.
IEEE Commun. Lett.
George K. Karagiannidis, Theodoros A. Tsiftsis, Nikos C. Sagias
2005 J jnl
Average output SINR of equal-gain diversity in correlated Nakagami-m fading with cochannel interference.
IEEE Trans. Wirel. Commun.
Nikos C. Sagias, George K. Karagiannidis, Dimitris A. Zogas, George S. Tombras, Stavros A. Kotsopoulos
2005 — conf
Closed-form bounds for multihop relayed communications in Nakagami-m fading.
ICC
George K. Karagiannidis, Theodoros A. Tsiftsis, Ranjan K. Mallik, Nikos C. Sagias, Stavros A. Kotsopoulos
2005 J jnl
Communication Theory Average output SNR of equal-gain diversity receivers over correlative Weibull fading channels.
Eur. Trans. Telecommun.
Dimitris A. Zogas, Nikos C. Sagias, George S. Tombras, George K. Karagiannidis
2005 J jnl
Effects of carrier phase error on EGC receivers in correlated Nakagami-m fading.
IEEE Commun. Lett.
Nikos C. Sagias, George K. Karagiannidis
2005 J jnl
Equal-gain and maximal-ratio combining over nonidentical Weibull fading channels.
IEEE Trans. Wirel. Commun.
George K. Karagiannidis, Dimitris A. Zogas, Nikos C. Sagias, Stavros A. Kotsopoulos, George S. Tombras
2005 J jnl
Gaussian class multivariate Weibull distributions: theory and applications in fading channels.
IEEE Trans. Inf. Theory
Nikos C. Sagias, George K. Karagiannidis
2005 J jnl
New results for the Shannon channel capacity in generalized fading channels.
IEEE Commun. Lett.
Nikos C. Sagias, George S. Tombras, George K. Karagiannidis
2005 J jnl
Performance analysis of a class of GSC receivers over nonidentical Weibull fading channels.
IEEE Trans. Veh. Technol.
Petros S. Bithas, George K. Karagiannidis, Nikos C. Sagias, P. Takis Mathiopoulos, Stavros A. Kotsopoulos, Giovanni Emanuele Corazza
2005 J jnl
Selection diversity receivers over nonidentical Weibull fading channels.
IEEE Trans. Veh. Technol.
Nikos C. Sagias, Dimitris A. Zogas, George K. Karagiannidis
2005 J jnl
Spectral efficiency for selection combining RAKE receivers over Weibull fading channels.
J. Frankl. Inst.
Nikos C. Sagias, Panagiotis Varzakas, George S. Tombras, George K. Karagiannidis
2005 J jnl
Switched diversity receivers over generalized gamma fading channels.
IEEE Commun. Lett.
Nikos C. Sagias, P. Takis Mathiopoulos
2005 — conf
The N* Nakagami fading channel model.
ISWCS
George K. Karagiannidis, Nikos C. Sagias, P. Takis Mathiopoulos
2004 J jnl
Average channel capacity for generalized-selection combining RAKE receivers.
Eur. Trans. Telecommun.
Nikos C. Sagias, Panagiotis Varzakas, George S. Tombras, George K. Karagiannidis
2004 J jnl
Channel capacity and second-order statistics in Weibull fading.
IEEE Commun. Lett.
Nikos C. Sagias, Dimitris A. Zogas, George K. Karagiannidis, George S. Tombras
2004 — conf
Dual selection diversity over correlated Weibull fading channels.
ICC
Nikos C. Sagias, George K. Karagiannidis, Dimitris A. Zogas, P. Takis Mathiopoulos, George S. Tombras, Stavros A. Kotsopoulos
2004 B conf
Multihop communications with fixed-gain relays over generalized fading channels.
GLOBECOM
George K. Karagiannidis, Dimitris A. Zogas, Nikos C. Sagias, Theodoros A. Tsiftsis, P. Takis Mathiopoulos
2004 J jnl
Performance analysis of dual selection diversity in correlated Weibull fading channels.
IEEE Trans. Commun.
Nikos C. Sagias, George K. Karagiannidis, Dimitris A. Zogas, P. Takis Mathiopoulos, George S. Tombras
2004 B conf
Second order statistics and channel spectral efficiency for selection diversity receivers in Weibull fading.
PIMRC
Nikos C. Sagias, George K. Karagiannidis, Dimitris A. Zogas, Panayiotis Takis Mathiopoulos, George S. Tombras, Fotini-Niovi Pavlidou
2004 B conf
Selection diversity for wireless communications with non-identical Weibull statistics.
GLOBECOM
Nikos C. Sagias, George K. Karagiannidis, Dimitris A. Zogas, P. Takis Mathiopoulos