Konstantinos Nikitopoulos

Publication Activity (10 Years)

Years Active: 2001-2024
Publications (10 Years): 51

Top Topics

Massively Parallel

Wireless Systems

Top Venues

IEEE Trans. Veh. Technol.

Publications

Thomas James Thomas, Marcin Filo, Konstantinos Nikitopoulos
High-Throughput, Sorted QR Accelerator for Non-Linear Processing in Open-RAN Systems. IEEE Access 12 (2024)
Mahmoud Mojarrad Kiasaraei, Konstantinos Nikitopoulos, Rahim Tafazolli
Toward Ultra-Power-Efficient, Tbps Wireless Systems via Analogue Processing: Existing Approaches, Challenges and Way Forward. IEEE Commun. Surv. Tutorials 26 (2) (2024)
George N. Katsaros, Konstantinos Nikitopoulos
Power Efficient and Ultra Dense Open-RAN Vehicular Networks With Non-Linear Processing. IEEE Access 12 (2024)
Mahmoud Mojarrad Kiasaraei, Konstantinos Nikitopoulos, Rahim Tafazolli
An Analogue Channel Estimation Method Suitable for DigiLogue Receivers. WCNC (2024)
Konstantinos Nikitopoulos, George N. Katsaros, Marcin Filo, Chathura Jayawardena, Rahim Tafazolli
Toward Software-Based, MIMO, Open-RAN PHY Architectures with Both Linear and Non-Linear Processing. IEEE Commun. Mag. 62 (8) (2024)
Chathura Jayawardena, Konstantinos Nikitopoulos
Joint Frequency Offset Compensation and Detection for Multi-User MIMO-OFDM Systems with Frequency Asynchronous User Access. ICC (2023)
Juan Carlos De Luna Ducoing, Konstantinos Nikitopoulos
Scalable MU-MIMO User Scheduling for Next-Generation Wireless Networks. CAMAD (2023)
Juan Carlos De Luna Ducoing, Chathura Jayawardena, Konstantinos Nikitopoulos
An Assessment of Deep Learning Versus Massively Parallel, Non-Linear Methods for Highly-Efficient MIMO Detection. IEEE Access 11 (2023)
Konstantinos Nikitopoulos, Marcin Filo, George N. Katsaros, Chathura Jayawardena, Rahim Tafazolli
MU-MIMO, Open-RAN PHY with Linear and Massively Parallelizable Non-Linear Processing. MobiCom (2023)
Mahmoud Mojarrad Kiasaraei, Rahim Tafazolli, Konstantinos Nikitopoulos
A DigiLogue Receiver Design for Tbps Wireless Transmissions over Flat-Fading Channels. CAMAD (2023)
Konstantinos Nikitopoulos
Massively Parallel, Nonlinear Processing for 6G: Potential Gains and Further Research Challenges. IEEE Commun. Mag. 60 (1) (2022)
George N. Katsaros, Rahim Tafazolli, Konstantinos Nikitopoulos
On the Power Consumption of Massive-MIMO, 5G New Radio with Software-Based PHY Processing. GLOBECOM (Workshops) (2022)
Yong Xia, Chathura Jayawardena, Konstantinos Nikitopoulos
Reduced Complexity Matrix Inversions in Slow Time-Varying MIMO Channels. ICC (2022)
Juan Carlos De Luna Ducoing, Konstantinos Nikitopoulos
Quantum Annealing for Next-Generation MU-MIMO Detection: Evaluation and Challenges. ICC (2022)
Christopher Husmann, Chathura Jayawardena, Amine Maaref, Pei Xiao, Konstantinos Nikitopoulos
Low-Complexity SCMA Detection for Unsupervised User Access. IEEE Commun. Lett. 25 (3) (2021)
Juan Carlos De Luna Ducoing, Yiping Qin, Yun Xue, Konstantinos Nikitopoulos
Gyre Precoding for MU-MIMO Systems. IEEE Commun. Lett. 25 (8) (2021)
Elissaios-Alexios Papatheofanous, Dionysios I. Reisis, Konstantinos Nikitopoulos
The LDPC Challenge in Software-Based 5G New Radio Physical Layer Processing. MeditCom (2021)
Marcin Filo, Yong Xia, Konstantinos Nikitopoulos
SACCESS: Towards A Software Acceleration Framework for 5G Radio Access Networks. MeditCom (2021)
Elissaios-Alexios Papatheofanous, Dionysios I. Reisis, Konstantinos Nikitopoulos
LDPC Hardware Acceleration in 5G Open Radio Access Network Platforms. IEEE Access 9 (2021)
Farhad Mehran, Konstantinos Nikitopoulos, Hamid Jafarkhani
Generalized Space-Time Super-Modulation and Its Application to Grant-Free Medium Access. IEEE Trans. Commun. 69 (9) (2021)
Juan Carlos De Luna Ducoing, Chathura Jayawardena, Marcin Filo, Konstantinos Nikitopoulos
Towards 6G MIMO Systems, with Massively-Parallel Non-Linear Processing. MeditCom (2021)
Konstantinos Nikitopoulos, Mahmoud Mojarrad Kiasaraei
DigiLogue: Ultra-Fast and Ultra-Power-Efficient Signal Processing for Tbps Wireless Systems. GLOBECOM (Workshops) (2021)
Sohail Payami, Konstantinos Nikitopoulos, Mohsen Khalily, Rahim Tafazolli
A Signal Processing Framework for Agile RF Beamforming: From RF-Chain-Free to Hybrid Beamformers. IEEE Trans. Commun. 69 (6) (2021)
Konstantinos Nikitopoulos, Marcin Filo, Chathura Jayawardena, Juan Carlos De Luna Ducoing, Rahim Tafazolli
Non-Linear Base-Station Processing Within a 3GPP Compliant Framework. IEEE Access 9 (2021)
Juquan Mao, Lei Zhang, Pei Xiao, Konstantinos Nikitopoulos
Interference Analysis and Power Allocation in the Presence of Mixed Numerologies. IEEE Trans. Wirel. Commun. 19 (8) (2020)
Sohail Payami, Mohsen Khalily, Ali Araghi, Tian Hong Loh, David Cheadle, Konstantinos Nikitopoulos, Rahim Tafazolli
Developing the First mmWave Fully-Connected Hybrid Beamformer With a Large Antenna Array. IEEE Access 8 (2020)
Konstantinos Nikitopoulos, Marcin Filo, Chathura Jayawardena, Rahim Tafazolli
Towards Radio Designs with Non-Linear Processing for Next Generation Mobile Systems. CoRR (2020)
Georgios Georgis, Alexios Thanos, Marcin Filo, Konstantinos Nikitopoulos
A DSP Acceleration Framework For Software-Defined Radios On X86 64. ICASSP (2020)
Marcin Filo, Juan Carlos De Luna Ducoing, Chathura Jayawardena, Christopher Husmann, Rahim Tafazolli, Konstantinos Nikitopoulos
Evaluating Non-Linear Beamforming in a 3GPP-Compliant Framework Using the SWORD Platform. PIMRC (2020)
Chathura Jayawardena, Konstantinos Nikitopoulos
G-MultiSphere: Generalizing Massively Parallel Detection for Non-Orthogonal Signal Transmissions. IEEE Trans. Commun. 68 (2) (2020)
Juquan Mao, Lei Zhang, Pei Xiao, Konstantinos Nikitopoulos
Filtered OFDM: An Insight Into Intrinsic In-Band Interference and Filter Frequency Response Selectivity. IEEE Access 8 (2020)
Sohail Payami, Mohsen Khalily, Tian Hong Loh, Konstantinos Nikitopoulos
Hybrid Beamforming With Switches and Phase Shifters Over Frequency-Selective Channels. IEEE Wirel. Commun. Lett. 9 (8) (2020)
Chang He, Aijun Cao, Lixia Xiao, Lei Zhang, Pei Xiao, Konstantinos Nikitopoulos
Enhanced DCT-OFDM System With Index Modulation. IEEE Trans. Veh. Technol. 68 (5) (2019)
Chang He, Aijun Cao, Lixia Xiao, Lei Zhang, Pei Xiao, Konstantinos Nikitopoulos
Index Modulation Assisted DCT-OFDM with Enhanced Transceiver Design. ICC (2019)
Sohail Payami, Mathini Sellathurai, Konstantinos Nikitopoulos
Low-Complexity Hybrid Beamforming for Massive MIMO Systems in Frequency-Selective Channels. IEEE Access 7 (2019)
Konstantinos Nikitopoulos, Georgios Georgis, Chathura Jayawardena, Daniil Chatzipanagiotis, Rahim Tafazolli
Massively Parallel Tree Search for High-Dimensional Sphere Decoders. IEEE Trans. Parallel Distributed Syst. 30 (10) (2019)
Georgios Georgis, Marcin Filo, Alexios Thanos, Christopher Husmann, Juan Carlos De Luna Ducoing, Rahim Tafazolli, Konstantinos Nikitopoulos
SWORD: Towards a Soft and Open Radio Design for Rapid Development, Profiling, Validation and Testing. IEEE Access 7 (2019)
Farhad Mehran, Konstantinos Nikitopoulos
Generalized Space-Time Super-Modulation for Headerless Grant-Free Rateless Multiple Access. GLOBECOM (2018)
Chathura Jayawardena, Konstantinos Nikitopoulos
Massively Parallel Detection for Non-Orthogonal Signal Transmissions. GLOBECOM Workshops (2018)
Christopher Husmann, Panagiotis Chatzi Nikolaou, Konstantinos Nikitopoulos
Reduced Latency ML Polar Decoding via Multiple Sphere-Decoding Tree Searches. IEEE Trans. Veh. Technol. 67 (2) (2018)
Christopher Husmann, Rahim Tafazolli, Konstantinos Nikitopoulos
Antipodal Detection and Decoding for Large Multi-User MIMO with Reduced Base-Station Antennas. GLOBECOM Workshops (2018)
Christopher Husmann, Konstantinos Nikitopoulos
ViPer MIMO: Increasing Large MIMO Efficiency via Practical Vector-Perturbation. GLOBECOM (2018)
Chang He, Pei Xiao, Lei Zhang, Juquan Mao, Aijun Cao, Konstantinos Nikitopoulos
Efficient DCT-MCM detection for single and multi-antenna wireless systems. PIMRC (2017)
Christopher Husmann, Georgios Georgis, Konstantinos Nikitopoulos, Kyle Jamieson
FlexCore: Massively Parallel and Flexible Processing for Large MIMO Access Points. NSDI (2017)
Georgios Georgis, Konstantinos Nikitopoulos, Kyle Jamieson
Geosphere: An Exact Depth-First Sphere Decoder Architecture Scalable to Very Dense Constellations. IEEE Access 5 (2017)
Juquan Mao, Chin-Liang Wang, Lei Zhang, Chang He, Pei Xiao, Konstantinos Nikitopoulos
A DHT-based multicarrier modulation system with pairwise ML detection. PIMRC (2017)
Konstantinos Nikitopoulos, Farhad Mehran, Hamid Jafarkhani
Space-Time Super-Modulation: Concept, Design Rules, and Its Application to Joint Medium Access and Rateless Transmission. IEEE Trans. Wirel. Commun. 16 (12) (2017)
Konstantinos Nikitopoulos, Daniil Chatzipanagiotis, Chathura Jayawardena, Rahim Tafazolli
MultiSphere: Massively Parallel Tree Search for Large Sphere Decoders. GLOBECOM (2016)
Konstantinos Nikitopoulos, Farhad Mehran, Hamid Jafarkhani
Space-Time Super-Modulation and Its Application to Joint Medium Access and Rateless Transmission. GLOBECOM (2016)
Farhad Mehran, Konstantinos Nikitopoulos, Pei Xiao, Qingchun Chen
Rateless wireless systems: Gains, approaches, and challenges. ChinaSIP (2015)
Konstantinos Nikitopoulos, Athanasios Karachalios, Dionysios I. Reisis
Exact Max-Log MAP Soft-Output Sphere Decoding via Approximate Schnorr-Euchner Enumeration. IEEE Trans. Veh. Technol. 64 (6) (2015)
Konstantinos Nikitopoulos, Juan Zhou, Ben Congdon, Kyle Jamieson
Geosphere: consistently turning MIMO capacity into throughput. SIGCOMM (2014)
Konstantinos Nikitopoulos, Gerd Ascheid
Approximate MIMO Iterative Processing With Adjustable Complexity Requirements. IEEE Trans. Veh. Technol. 61 (2) (2012)
Konstantinos Nikitopoulos, Sanaz Barghi, Hamid Jafarkhani, Homayoun Yousefi'zadeh
Multi-user detection for asynchronous space-frequency block coded schemes in frequency selective environments. GLOBECOM (2012)
Konstantinos Nikitopoulos, Gerd Ascheid
A simple complexity adjustment technique for soft MIMO receivers in broadcasting scenarios. ISWCS (2012)
Konstantinos Nikitopoulos, Gerd Ascheid
Approximate MIMO Iterative Processing with Adjustable Complexity Requirements CoRR (2011)
Konstantinos Nikitopoulos, Gerd Ascheid
Complexity Adjusted Soft-Output Sphere Decoding by Adaptive LLR Clipping. IEEE Commun. Lett. 15 (8) (2011)
Konstantinos Nikitopoulos, Dan Zhang, I-Wei Lai, Gerd Ascheid
Complexity-efficient enumeration techniques for soft-input, soft-output sphere decoding. IEEE Commun. Lett. 14 (4) (2010)
Konstantinos Nikitopoulos, Gerd Ascheid
MIMO APP Receiver Processing with Performance-Determined Complexity CoRR (2010)
Konstantinos Nikitopoulos, Gerd Ascheid
Complexity Adjusted Soft-Output Sphere Decoding by Adaptive LLR Clipping CoRR (2010)
Dan Zhang, I-Wei Lai, Konstantinos Nikitopoulos, Gerd Ascheid
Informed message update for iterative MIMO demapping and turbo decoding. ISITA (2010)
Dan Zhang, Konstantinos Nikitopoulos, I-Wei Lai, Gerd Ascheid, Heinrich Meyr
Iterative channel estimation control for MIMO-OFDM Systems. CISS (2010)
Konstantinos Nikitopoulos, Stelios Stefanatos, Aggelos K. Katsaggelos
Decision-aided compensation of severe phase-impairment-induced inter-carrier interference in frequency-selective OFDM. IEEE Trans. Wirel. Commun. 8 (4) (2009)
I-Wei Lai, Chun-Hao Liao, Ernst Martin Witte, David Kammler, Filippo Borlenghi, Konstantinos Nikitopoulos, Venkatesh Ramakrishnan, Dan Zhang, Tzi-Dar Chiueh, Gerd Ascheid, Heinrich Meyr
Searching in the Delta Lattice: An Efficient MIMO Detection for Iterative Receivers. GLOBECOM (2009)
Konstantinos Nikitopoulos, Ernst Martin Witte, Dan Zhang, David Kammler, I-Wei Lai, Chun-Hao Liao, Filippo Borlenghi, Gerd Ascheid
Complexity-Efficient Enumeration Techniques for Soft-Input, Soft-Output Sphere Decoding CoRR (2009)
Chun-Hao Liao, I-Wei Lai, Konstantinos Nikitopoulos, Filippo Borlenghi, David Kammler, Ernst Martin Witte, Dan Zhang, Tzi-Dar Chiueh, Gerd Ascheid, Heinrich Meyr
Combining orthogonalized partial metrics: Efficient enumeration for soft-input sphere decoder. PIMRC (2009)
Konstantinos Nikitopoulos, Andreas Polydoros
Inter-Frame, Fine Frequency/Phase Synchronization forSimple Space-Time-Coded OFDM Receivers. IEEE Trans. Wirel. Commun. 6 (10) (2007)
Konstantinos Nikitopoulos, Andreas Polydoros
Phase-impairment effects and compensation algorithms for OFDM systems. IEEE Trans. Commun. 53 (4) (2005)
Ioannis Dagres, Andreas Zalonis, Nikos Dimitriou, Konstantinos Nikitopoulos, Andreas Polydoros
Flexible Radio: A Framework for Optimized Multimodal Operation via Dynamic Signal Design. EURASIP J. Wirel. Commun. Netw. 2005 (3) (2005)
Konstantinos Nikitopoulos, Andreas Polydoros
Decision-directed compensation of phase noise and residual frequency offset in a space-Time OFDM receiver. IEEE Commun. Lett. 8 (9) (2004)
Konstantinos Nikitopoulos, Andreas Polydoros
Compensation schemes for phase noise and residual frequency offset in OFDM systems. GLOBECOM (2001)