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Christos N. Efrem
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2020 – today
- 2024
- [i11]Christos N. Efrem, Ioannis Krikidis:
Transmit and Receive Antenna Port Selection for Channel Capacity Maximization in Fluid-MIMO Systems. CoRR abs/2404.06072 (2024) - 2023
- [j13]Christos N. Efrem, Ioannis Krikidis:
Joint IRS Location and Size Optimization in Multi-IRS Aided Two-Way Full-Duplex Communication Systems. IEEE Trans. Wirel. Commun. 22(10): 6518-6533 (2023) - [c3]Christos N. Efrem, Ioannis Krikidis:
Global Optimization of Energy Efficiency in IRS-Aided Communication Systems via Robust IRS-Element Activation. ICC 2023: 2062-2068 - [i10]Christos N. Efrem, Ioannis Krikidis:
Robust IRS-Element Activation for Energy Efficiency Optimization in IRS-Assisted Communication Systems With Imperfect CSI. CoRR abs/2309.08526 (2023) - [i9]Christos N. Efrem:
Recurrence relations for the joint distribution of the sum and maximum of independent random variables. CoRR abs/2309.10548 (2023) - 2022
- [j12]Anargyros J. Roumeliotis, Christos N. Efrem, Athanasios D. Panagopoulos:
Minimization of nth Order Rate Matching in Satellite Networks with One to Many Pairings. Future Internet 14(10): 286 (2022) - [j11]Anargyros J. Roumeliotis, Christos N. Efrem, Charilaos I. Kourogiorgas, Athanasios D. Panagopoulos:
Capacity Allocation Mechanisms in High-Throughput Satellite Systems: One-to-Many Pairings. IEEE Syst. J. 16(3): 4005-4012 (2022) - [c2]Christos N. Efrem, Ioannis Krikidis:
IRS Deployment Optimization in Multi-IRS Assisted Two-Way Full-Duplex Communication Systems. ICC 2022: 4685-4690 - [i8]Christos N. Efrem, Ioannis Krikidis:
Joint IRS Location and Size Optimization in Multi-IRS Aided Two-Way Full-Duplex Communication Systems. CoRR abs/2202.11602 (2022) - [i7]Christos N. Efrem, Ioannis Krikidis:
Global Optimization of Energy Efficiency in IRS-Aided Communication Systems via Robust IRS-Element Activation. CoRR abs/2210.16662 (2022) - 2021
- [b1]Christos N. Efrem:
Optimization algorithm design and performance analysis for next-generation wireless networks. National Technical University of Athens, Greece, 2021 - [j10]Christos N. Efrem, Athanasios D. Panagopoulos:
On the Computation and Approximation of Outage Probability in Satellite Networks With Smart Gateway Diversity. IEEE Trans. Aerosp. Electron. Syst. 57(1): 476-484 (2021) - [j9]Christos N. Efrem, Athanasios D. Panagopoulos:
Minimizing the Installation Cost of Ground Stations in Satellite Networks: Complexity, Dynamic Programming and Approximation Algorithm. IEEE Wirel. Commun. Lett. 10(2): 378-382 (2021) - [j8]Anargyros J. Roumeliotis, Christos N. Efrem, Charilaos I. Kourogiorgas, Athanasios D. Panagopoulos:
Minimization of Losses and Rate Matching in Satellite Networks With One to Many Pairings. IEEE Wirel. Commun. Lett. 10(11): 2455-2458 (2021) - 2020
- [j7]Nikolaos K. Lyras, Christos N. Efrem, Charilaos I. Kourogiorgas, Athanasios D. Panagopoulos, Pantelis-Daniel M. Arapoglou:
Optimizing the Ground Network of Optical MEO Satellite Communication Systems. IEEE Syst. J. 14(3): 3968-3976 (2020) - [j6]Christos N. Efrem, Athanasios D. Panagopoulos:
Dynamic Energy-Efficient Power Allocation in Multibeam Satellite Systems. IEEE Wirel. Commun. Lett. 9(2): 228-231 (2020) - [j5]Christos N. Efrem, Athanasios D. Panagopoulos:
Globally Optimal Selection of Ground Stations in Satellite Systems With Site Diversity. IEEE Wirel. Commun. Lett. 9(7): 1101-1104 (2020) - [i6]Christos N. Efrem, Athanasios D. Panagopoulos:
On the Computation and Approximation of Outage Probability in Satellite Networks with Smart Gateway Diversity. CoRR abs/2003.06786 (2020) - [i5]Christos N. Efrem, Athanasios D. Panagopoulos:
Minimizing the Installation Cost of Ground Stations in Satellite Networks: Complexity, Dynamic Programming and Approximation Algorithm. CoRR abs/2005.07498 (2020)
2010 – 2019
- 2019
- [j4]Nikolaos K. Lyras, Christos N. Efrem, Charilaos I. Kourogiorgas, Athanasios D. Panagopoulos:
Medium earth orbit optical satellite communication networks: Ground terminals selection optimization based on the cloud-free line-of-sight statistics. Int. J. Satell. Commun. Netw. 37(4): 370-384 (2019) - [j3]Christos N. Efrem, Athanasios D. Panagopoulos:
A Framework for Weighted-Sum Energy Efficiency Maximization in Wireless Networks. IEEE Wirel. Commun. Lett. 8(1): 153-156 (2019) - [j2]Christos N. Efrem, Athanasios D. Panagopoulos:
Energy Efficiency Optimization: A New Trade-Off Between Fairness and Total System Performance. IEEE Wirel. Commun. Lett. 8(3): 853-856 (2019) - [i4]Christos N. Efrem, Athanasios D. Panagopoulos:
A Framework for Weighted-Sum Energy Efficiency Maximization in Wireless Networks. CoRR abs/1911.12419 (2019) - [i3]Christos N. Efrem, Athanasios D. Panagopoulos:
Energy Efficiency Optimization: A New Trade-off Between Fairness and Total System Performance. CoRR abs/1912.00220 (2019) - [i2]Christos N. Efrem, Athanasios D. Panagopoulos:
Dynamic Energy-Efficient Power Allocation in Multibeam Satellite Systems. CoRR abs/1912.00920 (2019) - [i1]Christos N. Efrem, Athanasios D. Panagopoulos:
Globally Optimal Selection of Ground Stations in Satellite Systems with Site Diversity. CoRR abs/1912.12911 (2019) - 2018
- [j1]Nikolaos K. Lyras, Christos N. Efrem, Charilaos I. Kourogiorgas, Athanasios D. Panagopoulos:
Optimum Monthly Based Selection of Ground Stations for Optical Satellite Networks. IEEE Commun. Lett. 22(6): 1192-1195 (2018) - [c1]Christos N. Efrem, Athanasios D. Panagopoulos:
Joint Power Allocation and Transmission Time Selection in Duty-cycled Wireless Sensor Networks. GIIS 2018: 1-5
Coauthor Index
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