Submitted Papers

• Saadet Simay Yılmaz and Berna Özbek, “User Selection in Secure Massive MIMO-NOMA-based MEC Systems for Delay-Sensitive Applications”, submitted to IEEE Transactions on Vehicular Technology

•  Mert İlgüy, Berna Özbek, Leila Musavian and Shahid Mumtaz, “Phase Shift Optimization for RIS enabled PNC System with Multiple Antennas”, submitted to IEEE Access

Journals

• S. Yılmaz and B. Özbek, “Massive MIMO-NOMA based MEC in Task Offloading for Delay Minimization,” IEEE Access, vol. 11, pp. 162-170, 2023. https://ieeexplore.ieee.org/abstract/document/9999655 
• S. Yılmaz, B. Özbek, R. Mumtaz, “Delay Minimization for Massive MIMO based Cooperative Mobile Edge Computing System with Secure Offloading,” IEEE Open Journal of Vehicular Technology, vol. 4, pp. 149-161, 2023. https://ieeexplore.ieee.org/document/9969896
• İ. Cumalı, B. Özbek, G. Karabulut Kurt, H. Yanikomeroglu, “User Selection and Codebook Design for NOMA-Based High Altitude Platform Station (HAPS) Communications,” IEEE Transactions on Vehicular Technology, vol. 72, no. 3, pp. 3636-3646, March 2023. https://ieeexplore.ieee.org/document/9942358 
• S. Yılmaz, B. Özbek, M. İlgüy, B. Okyere, L. Musavian, J. Gonzalez, “User Selection for NOMA-Based MIMO with Physical-Layer Network Coding in Internet of Things Applications,” IEEE Internet of Things Journal, vol. 9, no. 16, pp. 14998-15006, August 2022. https://ieeexplore.ieee.org/document/9428028
• S. Yılmaz, B. Özbek, “Multi-Helper NOMA for Cooperative Mobile Edge Computing,” IEEE Transactions on Intelligent Transportation Systems, vol. 23, no. 7, pp. 9819-9828, July 2022. https://ieeexplore.ieee.org/document/9566305
• E. Aycan Beyazıt, B. Özbek, D. Le Ruyet, “Deep learning based adaptive bit allocation for heterogeneous interference channels,” Physical Communication, vol. 47, pp. 101364, August 2021. https://www.sciencedirect.com/science/article/pii/S1874490721001014
• B. Okyere, L. Musavian, B. Özbek, S. A. Busari and J. Gonzalez, “The Resilience of Massive MIMO PNC to Jamming Attacks in Vehicular Networks,” IEEE Transactions on Intelligent Transportation Systems, vol. 22, no. 7, pp. 4110-4117, July 2021. https://ieeexplore.ieee.org/document/9195749
• B. Okyere, L. Musavian, B. Özbek, S. A. Busari, J. Gonzalez, “A Novel Joint Index Modulation and Physical Layer Network Coding Mechanism for Beyond 5G,” IEEE Communications Standards Magazine, vol. 5, no. 2, pp. 100-105, June 2021. https://ieeexplore.ieee.org/document/9464919
• B. Özbek, O. Erdoğan, S. A. Busari, J. Gonzalez, “Hybrid beamforming strategies for secure multicell multiuser mmWave MIMO communications,” Physical Communication, vol. 46, pp. 101319, June 2021. https://www.sciencedirect.com/science/article/pii/S1874490721000562
• M. İlgüy, B. Özbek, R. Mumtaz, S. A. Busari, J. Gonzalez, “Coverage Analysis of Physical Layer Network Coding in Massive MIMO Systems,” IEEE Transactions on Vehicular Technology, vol. 70, no. 2, pp. 1480-1487, February 2021. https://ieeexplore.ieee.org/document/9332262
• C. Goztepe, B. Ozbek, G. K. Kurt, “Design and Implementation of Spatial Correlation-Based Clustering for Multiuser MISO-NOMA Systems,” IEEE Communications Letters, vol. 25, no. 1, pp. 254-258, January 2021. https://ieeexplore.ieee.org/document/9186206
• İ. Cumali, B. Özbek, R. Mumtaz, J. Gonzalez, “User Selection for Millimeter Wave Non-Uniform Full Dimensional MIMO,” IEEE Access, vol. 8, pp. 192797-192807, December 2020. https://ieeexplore.ieee.org/document/9224734
• B. Özbek, M. Pischella, D. Le Ruyet, “Energy Efficient Resource Allocation for Underlaying Multi-D2D Enabled Multiple-Antennas Communications,” IEEE Transactions on Vehicular Technology, vol. 69, no. 6, pp. 6189-6199, June 2020. https://ieeexplore.ieee.org/document/9039735
• S. Yılmaz, B. Özbek, M. Taş, S. Bengür, “Traffic load–based cell selection for APCO25 conventional–based professional mobile radio,” Annals of Telecommunications, vol. 75, pp. 77–88, February 2020. https://link.springer.com/article/10.1007/s12243-019-00735-5
• B. Özbek, Ö. Özdogan Şenol, G. K. Kurt, “Secure multiuser MIMO communication systems with imperfect channel state information,” Physical Communication, vol. 37, pp. 100863, December 2019. https://www.sciencedirect.com/science/article/pii/S1874490718307821
• İ. Baştürk, B. Özbek, “User-relay assisted cellular networks with multiple antennas,” International Journal of Electronics, 106, issue 7, pp. 1029-1040, 2019. https://www.tandfonline.com/doi/full/10.1080/00207217.2019.1579368
• B. Özbek, G. K. Kurt, “Spatial Signature for Secure MISO-OFDM Systems,” IET Electronics Letters, vol. 54, pp. 601-603, March 2018. https://ietresearch.onlinelibrary.wiley.com/doi/full/10.1049/el.2018.0545
• B. Özbek, Ö. Özdoğan, G. K. Kurt, “Secure multiuser MISO communication systems with limited feedback link,” Springer Annals of Telecommunications, vol. 73, pp. 381-390, June 2018. https://link.springer.com/article/10.1007/s12243-018-0627-6
• İ. Baştürk, B. Özbek, “Channel and Queue Aware Joint Relay Selection and Resource Allocation for MISO-OFDMA Based User-Relay Assisted Cellular Networks,” Springer Telecommunication Systems, vol. 67, pp. 619-633, April 2018. https://link.springer.com/article/10.1007/s11235-017-0363-7
• B. Özbek, M. Pichella, D. Le Ruyet, “Dynamic shared spectrum allocation for underlaying Device-to-Device communications,” IEEE Wireless Communications Magazine, vol. 24, issue 5, pp. 88-93, October 2017. https://ieeexplore.ieee.org/document/8088534
• A. Topal, G. K. Kurt, B. Özbek, “Key Error Rates in Physical Layer Key Generation: Theoretical Analysis and Measurement Based Verification,” IEEE Wireless Communications Letters, August 2017. https://ieeexplore.ieee.org/abstract/document/8010772
• B. Özbek, U. Bayrak, “Joint Beamforming and Power Control Technique for Femtocell Networks,” Wireless Personal Communications, April 2017. https://link.springer.com/article/10.1007/s11277-017-4131-5
• E. Aycan Beyazıt, B. Özbek, D. Le Ruyet, “On Stream Selection for Interference Alignment with Limited Feedback in Heterogeneous Networks,” Wiley Transactions on Emerging Telecommunications Technologies (ETT), vol. 27, no. 11, pp. 1461–1471, November 2016. https://onlinelibrary.wiley.com/doi/full/10.1002/ett.3074
• İ. Baştürk, B. Özbek, “Iterative Channel Estimation for Higher Order Modulated STBC-OFDM Systems with Reduced Complexity,” KSII Transactions on Internet and Information Systems, vol. 10, no. 6, pp. 2446-2462, June 2016. http://koreascience.or.kr/article/JAKO201622338581925.page?&lang=ko
• İ. Baştürk, B. Özbek, “Radio Resource Management for User-Relay Assisted OFDMA Based Wireless Networks,” Elsevier AEU-International Journal of Electronics and Communications, vol. 70, issue 5, pp. 643–651, May 2016. https://www.sciencedirect.com/science/article/pii/S1434841116300371
• E. Aycan Beyazıt, B. Özbek, D. Le Ruyet, “On stream selection for interference alignment in heterogeneous networks,” Eurasip Journal on Wireless Communications and Networking, March 2016. https://jwcn-eurasipjournals.springeropen.com/articles/10.1186/s13638-016-0575-7
• B. Özbek, “Reduced feedback link design for device-relaying enhanced multiple-input single- output orthogonal frequency-division multiple access wireless systems,” IET Electronics Letters, vol. 52, issue 5, pp. 403-404, March 2016. https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/el.2015.2919  
• B. Özbek, D. Le Ruyet, “Adaptive limited feedback links for cooperative multi-antenna multicell networks,” Eurasip Journal on Wireless Communications and Networking, December 2014. https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/el.2015.2919
• B. Özbek, D. Le Ruyet, M. Pischella, “Adaptive reduced feedback links for distributed power allocation in multicell MISO-OFDMA networks,” IEEE Wireless Communications Letters, vol. 3, issue 2, pp. 141-144, April 2014. https://ieeexplore.ieee.org/document/6684336
• H. Khanfir, D. Le Ruyet, B. Özbek, “Reduced feedback load using user selection algorithms for the multiuser multi-input single output systems,” Transactions on Emerging Telecommunications Technologies (ETT), vol. 24, issue 7-8, pp. 809-819, November-December 2013. https://onlinelibrary.wiley.com/doi/full/10.1002/ett.2557
• B. Özbek, D. Le Ruyet, “Feedback channel designs for fair scheduling in MISO-OFDMA systems,” Eurasip Journal on Wireless Communications and Networking, July 2012. https://jwcn-eurasipjournals.springeropen.com/articles/10.1186/1687-1499-2012-220
• B. Özbek, D. Le Ruyet, H. Khanfir, “Performance evaluation of multicast MISO-OFDM systems,” Springer Annals of Telecommunications, vol. 63, no. 5-6, pp. 295-305, June 2008. https://link.springer.com/article/10.1007/s12243-008-0027-4
• B. Özbek, D. Le Ruyet, “Low complexity ZF receiver for orthogonal SFBC-OFDM in broadband wireless channels,” IET Electronics Letters, vol. 42, no. 8, pp. 479-481, April 2006. https://digital-library.theiet.org/content/journals/10.1049/el_2006435

Book/Book Chapter

• B. Özbek, D. Le Ruyet, “Feedback strategies for wireless communication”, Springer-Engineering Series Book, Springer Science+Business Media New York, U.S.A, 350 pages, December 2014, DOI:10.1007/978-1-4614-7741-9. https://link.springer.com/book/10.1007/978-1-4614-7741-9
• D. Le Ruyet, B. Özbek, “Resource Management Techniques for OFDMA” in “Orthogonal Frequency Division Multiple Access Fundamentals and Applications”, Editors: T. Jiang, L. Song, Y. Zhang, Auerbach Publications, Taylor & Francis Group, pp. 101-129, April 2010.

International Conferences

• İ. Cumalı, B. Özbek, G. K. Kurt, “Detection Scheme for PNC-Based Cell-Free MIMO Systems,” IEEE International Mediterranean Conference on Communications and Networking, 4-7 September 2023, Dubrovnik, Croatia.
• M. İlgüy, B. Özbek, L. Musavian and R. Mumtaz, “Reconfigurable Intelligent Surface Assisted PNC System with Multiple Antennas,” 2023 IEEE International Mediterranean Conference on Communications and Networking (MeditCom), Dubrovnik, Croatia, pp. 12-17 .
• S. G. Cetin, B. Ozbek, G. K. Kurt, “Integrated Space Domain Awareness and Communication System,” IEEE Vehicular Technology Conference, 20-23 June 2023, Florence, Italy.
• C. Göztepe, G. K. Kurt, B. Özbek, “Carrier Frequency Offset Based Shared Randomness for Secure Transmission in M-PSK NOMA,” IEEE International Black Sea Conference on Communications and Networking, Istanbul, Turkiye.
• M. İlgüy and B. Özbek, “A Framework for Physical Layer Network Coding with Multiple antennas for BPSK”, BalkanCom, 5-8 June 2023, İstanbul, Türkiye.
• M. İlgüy, B. Özbek, B. Okyere, L. Musavian, A. Pereira, “Physical Layer Network Coding Enabled NOMA with Multiple Antennas,” IEEE Conference on Standards for Communications and Networking (CSCN), Thessaloniki, Greece, 2022, pp. 176-180. https://ieeexplore.ieee.org/document/10050963
• B. Özbek, C. Arslan, M. Demirtaş, H. Şahan, F. K. Kadı, E. Elçi, “Limited Feedback Design for Massive Full Dimension MIMO Systems,” Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), pp. 89-93, 07-10 June 2022, Grenoble, France. https://ieeexplore.ieee.org/document/9815667
• O. Erdoğan, B. Özbek, S. A. Busari, J. Gonzalez, “Hybrid Beamforming for Secure Multiuser mmWave MIMO Communications,” IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 31 August-3 September 2020, London, UK. https://ieeexplore.ieee.org/document/9217314
• İ. Cumali, B. Özbek, A. Pyattaev, “Beam and User Selection Technique in Millimeter Wave Communications,” IEEE Vehicular Technology Conference, 25-28 May 2020, Antwerp, Belgium. https://ieeexplore.ieee.org/document/9128737
• S. Yılmaz and B. Özbek, “Compressive Sensing based Low Complexity User Selection for Massive MIMO Systems,” IEEE Vehicular Technology Conference, 25-28 May 2020, Antwerp, Belgium. https://ieeexplore.ieee.org/document/9129553
• B. Özbek, Y. Aydoğmuş, A. Ulaş, B. Görkemli, “Joint Routing and Resource Allocation for Software Defined Mobile Networks,”IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 8-11 September 2019, Istanbul, Turkey. https://ieeexplore.ieee.org/document/8904217
• A. Köse, B. Özbek, “Resource Allocation for Underlaying Device-to-Device Communications Using Maximal Independent Sets and Knapsack Algorithm,” IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 9-12 September 2018, Bologna, Italy. https://ieeexplore.ieee.org/document/8580784
• M. Pichella, B. Özbek, D. Le Ruyet, “Interference-based Clustering for MIMO D2D Underlay Communications,” European Signal Processing Conference (Eusipco), 3-7 September 2018, Rome, Italy. https://ieeexplore.ieee.org/document/8553033
• B. Özbek, M. Pichella, D. Le Ruyet, “Message-Passing Algorithm for Sum-rate Maximization in Multi-antenna Underlay D2D Communications,” International Symposium on Wireless Communication Systems, 28-31 August 2018, Lisbon, Portugal. https://ieeexplore.ieee.org/document/8491058
• A. Karataş, B. Özbek, E. D. Bardak, İ. Sönmez, “Cell load based user association for TETRA Trunk systems,” International Conference on Electrical and Electronics Engineering, 30 November-2 December 2017, Bursa, Turkey. https://ieeexplore.ieee.org/document/8266421
• S. Yılmaz, B. Özbek, M. Taş, S. Bengür, “Cell Load Based User Association for Professional Mobile Radio Systems,” International Conference on Electrical and Electronics Engineering, 30 November-2 December 2017, Bursa, Turkey. https://ieeexplore.ieee.org/document/8266422
• B. Özbek, M. Pichella, D. Le Ruyet, “Interference management multiuser multiantenna OFDMA underlaying D2D communications,” International Symposium on Wireless Communication Systems, 29 August-1 September 2017, Bologna, Italy. https://ieeexplore.ieee.org/document/8108156
• O. A. Topal, G. K. Kurt, B. Özbek, “Space-Frequency Grouping Based Key Extraction for MIMO-OFDM Systems,” International Symposium on Wireless Communication Systems, 29 August-1 September 2017, Bologna, Italy. https://ieeexplore.ieee.org/document/8108133
• A. Karataş, B. Özbek, İ. Sönmez, S. Bengür, “Load Based Cell Selection Algorithm for Tetra based professional mobile radio,” Telecommunications Forum, 22-23 November 2016, Belgrad, Serbia. https://ieeexplore.ieee.org/document/7818782
• S. Yılmaz, B. Özbek, M. Taş, E. D. Bardak, “Load Based Cell Selection Algorithm for Digital Mobile Radio,” International Congress on Ultra-Modern Telecommunications and Control Systems, 18-20 October 2016, Lisbon, Portugal. https://ieeexplore.ieee.org/abstract/document/7765350
• B. Özbek, Ö. Özdoğan, G. K. Kurt, “Secure Multiuser MISO Communication Systems with Quantized Feedback,” IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Workshop on Deployment perspectives of Physical Layer Security into wireless public RATs, 2-6 September 2016, Valencia, Spain. https://ieeexplore.ieee.org/document/7794561
• E. Aycan Beyazıt, B. Özbek, D. Le Ruyet, “Adaptive limited feedback scheme for stream selection based interference alignment in heterogeneous networks,” IEEE Sensor Array and Multichannel Signal Processing Workshop, 10-13 July 2016, Rio de Janeiro, Brazil. https://ieeexplore.ieee.org/document/7569700
• B. Özbek, Y. Aydoğmuş, A. Ulaş, B. Görkemli, K. Ulusoy, “Energy aware routing and traffic management for software defined networks,” IEEE Conference on Network Softwarization, 6-10 June 2016, Seoul, Korea. https://ieeexplore.ieee.org/document/7502446
• I. Ahmad, M. Liyanage, S. Namal, M. Ylianttila, A. Gurtov, M. Eckert, T. Bauschert, Z. Faigl, L. Bokor, E. Saygun, H. A. Akyıldız, O. L. Perez, M. U. Itzazelaia, B. Özbek, A. Ulaş, “New Concepts for Traffic, Resource and Mobility Management in Software-Defined Mobile Networks,” IEEE Conference on Wireless On-demand Network Systems and Services, pp. 41-48, 20-22 January 2016, Cortina d’Ampezzo, Italy. https://ieeexplore.ieee.org/document/7429046
• S. Gökceli, M. Uslu, G. K. Kurt, B. Özbek, H. Alakoca, M. A. Durmaz, “Implementation of Pre-FFT Beamforming in MIMO-OFDM,” International Conference on Electrical and Electronics Engineering, pp. 264-268, 26-28 November 2015, Bursa, Turkey. https://ieeexplore.ieee.org/document/7394639
• İ. Baştürk, B. Özbek, “Resource Allocation for User-Relay Assisted MISO-OFDMA Networks,” International Symposium on Wireless Communication Systems, 25-28 August 2015, Brussels, Belgium. https://ieeexplore.ieee.org/document/7454312
• E. Aycan, B. Özbek, D. Le Ruyet, “Improved Successive Stream Selection with Quantized Channel in Heterogeneous Networks,” International Symposium on Wireless Communication Systems, 25-28 August 2015, Brussels, Belgium. https://ieeexplore.ieee.org/document/7454418
• B. Özbek, D. Le Ruyet, M. Pischella, “Sum capacity maximization in distributed multicell MISO-OFDMA systems with reduced feedback links,” International Symposium on Wireless Communication Systems, pp. 508-512, 26-29 August 2014, Barcelona, Spain. https://ieeexplore.ieee.org/document/6933407
• D. Le Ruyet, R. Zakaria, B. Özbek, “On precoding MIMO-FBMC with imperfect channel state information at the transmitter,” International Symposium on Wireless Communication Systems, pp. 808-812, 26-29 August 2014, Barcelona, Spain. https://ieeexplore.ieee.org/document/6933464?arnumber=6933464
• E. Aycan, B. Özbek, D. Le Ruyet, “Hierarchical Successive Stream Selection for Heterogeneous Network Interference,” IEEE Wireless Communication and Networking Conference, pp. 1143-1148, 6-9 April 2014, Istanbul, Turkey. https://ieeexplore.ieee.org/document/6952290
• İ. Baştürk, B. Özbek, D. Le Ruyet, “Queue-Aware Resource Allocation for OFDMA Based Mobile Relay Enhanced Networks,” International Symposium on Wireless Communication Systems, pp. 1-5, 27-30 August 2013, Ilmenau, Germany. https://ieeexplore.ieee.org/document/6629830
• İ. Baştürk, B. Özbek, Ç. Edemen, A.S. Tan, E. Zeydan, S. Ergüt, “Radio Resource Management for OFDMA-Based Mobile Relay Enhanced Heterogeneous Cellular Networks,” IEEE Vehicular Technology Conference, 2-5 June 2013, Dresden, Germany. https://ieeexplore.ieee.org/document/6692729
• B. Özbek, D. Le Ruyet, “Adaptive Reduced Feedback for fair user scheduling in MISO-OFDMA systems,” IEEE International Workshop on Signal Processing Advances in Wireless Communications, pp. 289-293, 17-20 June 2012, Çeşme, Turkey. https://ieeexplore.ieee.org/document/6292912
• B. Özbek, D. Le Ruyet, M. Pischella, “Reduced feedback links for power minimization in distributed multicell OFDMA networks,” IEEE International Conference on Communications, pp. 5421-5425, 10-15 June 2012, Ottawa, Canada. https://ieeexplore.ieee.org/document/6363962
• İ. Baştürk, B. Özbek, “Fairness aware resource allocation for downlink MISO-OFDMA systems,” IEEE Wireless Communication and Networking Conference, 1- 4 April 2012, Paris, France. https://ieeexplore.ieee.org/document/6214094
• E. Aycan, B. Özbek, “Interference scenarios and capacity performances for femtocell networks,” International Conference on Electrical and Electronics Engineering, 1-4 December 2011, Bursa, Turkey. https://ieeexplore.ieee.org/document/6140211
• B. Özbek, D. Le Ruyet, “Adaptive bit partitioning strategy for cell-edge users in multiantenna multicell networks,” IEEE International Workshop on Signal Processing in Advanced Wireless Communications, pp. 456-460, 26-29 June 2011, San Francisco, CA, USA. https://ieeexplore.ieee.org/document/5990451
• B. Özbek, D. Le Ruyet, “Adaptive limited feedback for intercell interference cancelation in cooperative downlink multicell networks,” International Symposium on Wireless Communication Systems, pp. 81-85, 19-22 September 2010, York, UK. https://ieeexplore.ieee.org/abstract/document/5624536
• B. Özbek, D. Le Ruyet, “Adaptive resource allocation for SDMA-OFDMA systems with genetic algorithm,” International Symposium on Wireless Communication Systems, pp. 438-442, 7-10 September 2009, Tuscany, Italy. https://ieeexplore.ieee.org/document/5285288
• B. Özbek, D. Le Ruyet, “Reduced feedback designs for SDMA-OFDMA systems,” IEEE International Conference on Communications, pp. 1-6, 14-18 June 2009, Dresden, Germany. https://ieeexplore.ieee.org/document/5199400
• İ. Baştürk, B. Özbek, “Iterative EM-based channel estimation for STBC-OFDM,” IEEE Wireless Communication and Networking Conference, 5-8 April 2009, Budapest, Hungary. https://ieeexplore.ieee.org/document/4917765
• D. Le Ruyet, H. Khanfir, B. Özbek, “Performance of semi-orthogonal user selection for multiuser MISO systems,” IEEE Workshop on Signal Processing Advances in Wireless Communications, pp. 321-325, 6-9 July 2008, Recife, Brazil. https://ieeexplore.ieee.org/document/4641622
• H. Khanfir, D. Le Ruyet, B. Özbek, “Semi-orthogonal user selection for MISO systems with quantized feedback,” International ITG Workshop on Smart Antennas, pp. 169- 173, 26-27 February 2008, Darmstadt, Germany. https://ieeexplore.ieee.org/document/4475554
• D. Le Ruyet, B. Özbek, “Partial and analog feedback for MISO precoding systems,” IEEE International Conference on Communications, pp. 2767-2772, 24-28 June 2007, Glasgow, Scotland. https://ieeexplore.ieee.org/document/4289131
• D. Le Ruyet, B. Özbek, H. Khanfir, “Performance of multicast MISO-OFDM systems,” European Wireless Conference, 1-4 April 2007, Paris, France.
• B. Özbek, D. Le Ruyet, H. Khiari, “Adaptive resource allocation for multicast OFDM systems with multiple transmit antennas,” IEEE International Conference on Communications, pp. 4409-4414, 11-15 June 2006, İstanbul, Turkey. https://ieeexplore.ieee.org/document/4024730
• B. Özbek, D. Le Ruyet, C. Panazio, “Pilot-symbol-aided iterative channel estimation for OFDM-based systems,” European Signal Processing Conference, 4-8 September 2005, Antalya, Turkey. https://ieeexplore.ieee.org/document/7078459
• B. Özbek, D. Le Ruyet, “Performance and complexity analysis of suboptimal MIMO detectors,” IEEE Vehicular Technology Conference, vol. 2, pp. 929-933, 30 May-1 June 2005, Stockholm, Sweden. https://ieeexplore.ieee.org/document/1543442
• B. Özbek, D. Le Ruyet, “Performance analysis of coded SFBC-OFDM systems with four transmit antennas,” International OFDM Workshop, 15-16 September 2004, Dresden, Germany. https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.81.6576
• B. Özbek, D. Le Ruyet, “Channel compensation for SFBC-OFDM systems in broadband wireless channels,” International OFDM Workshop, 15-16 September 2004, Dresden, Germany. https://easytp.cnam.fr/leruyet/Publications/ofdm04_2.pdf
• D. Le Ruyet, T. Berzotti, B. Özbek, “Breadth first algorithms for APP detectors over MIMO channels,” IEEE International Conference on Communications, vol.2, pp. 926- 930, 20-24 June 2004, Paris, France. https://ieeexplore.ieee.org/document/1312637
• B. Özbek, D. Le Ruyet, M. Bellanger, “On space-frequency block codes for unequal channels,” COST273 Workshop on Broadband Wireless Local Access, 20-22 May 2003, Paris, France. https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.81.20

National Conferences

• A. Cengiz, S. T. Başaran, G. Karabulut Kurt, B. Özbek, H. Yanıkömeroğlu, “Approximation of Correlation Matrix for High Altitude Platform Stations,” 29th Signal Processing and Communications Applications Conference (SIU), 09-11 June 2021, Istanbul, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/9477792
• Ö. Özdoğan, B. Özbek, G.K.Kurt, “Performance of Limited Feedback Secure MISO Systems in Temporally Correlated Channels,” 25th Signal Processing and Communications Applications Conference (SIU), May 2017, Antalya, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7960181
• A. Karataş, B. Özbek, E. D. Bardak, İ. Sönmez, “Cell Selection Algorithm Performance for Tetra Trunk,” 24th Signal Processing and Communications Applications Conference (SIU), May 2016, Zonguldak, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7495755
• S. Yılmaz, B. Özbek, M. Taş, S. Bengür, “Performance of Cell Selection Algorithms for APCO25,” 24th Signal Processing and Communications Applications Conference (SIU), May 2016, Zonguldak, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7495756
• M. Uslu, H. B. Tuğrel, G. K. Kurt, B. Özbek, “Verification of Channel Reciprocity Implementation in Software Defined Radios,” 24th Signal Processing and Communications Applications Conference (SIU), May 2016, Zonguldak, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7495799
• Ö. Özdoğan, B. Özbek, G. K. Kurt, “Performance of secure multiuser MISO systems with threshold based user selection,” 24th Signal Processing and Communications Applications Conference (SIU), May 2016, Zonguldak, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7495841
• Y. Aydoğmus ̧ B. Özbek, O. Koyuncu, K. Ulusoy, Ö. Karakaya, “Flow Based Power Efficient Routing for Software Defined Networks,” 24th Signal Processing and Communications Applications Conference (SIU), May 2016, Zonguldak, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7495778
• İ. Baştürk, B. Özbek, “Distance Based Selection for User-Relaying in OFDMA-Based Wireless Networks,” 24th Signal Processing and Communications Applications Conference (SIU), May 2016, Zonguldak, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7495908
• E. Aycan Beyazıt, B. Özbek, D. Le Ruyet, “Adaptive limited feedback scheme for stream selection based interference alignment in heterogeneous networks,” 24th Signal Processing and Communications Applications Conference (SIU), 16-19 May 2016, Zonguldak, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7495921
• E. Aycan Beyazıt, B. Özbek, D. Le Ruyet, “Interference Alignment with Improved Stream Selection in Heterogeneous Networks,” 23rd Signal Processing and Communications Applications Conference (SIU), pp.1054-1057, 16-19 May 2015, Malatya, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7130014
• Ş. Durbaş, B. Özbek, “Energy-Efficient Resource Allocation for Multiuser OFDM Wireless Networks,” 23rd Signal Processing and Communications Applications Conference (SIU), pp. 990-993, 16-19 May 2015, Malatya, Turkey, (In Turkish). https://ieeexplore.ieee.org/document/7129998
• İ. Baştürk, B. Özbek, “Effect of Mobile Relays on the OFDMA-based Cellular Network Performance,” 22nd Signal Processing and Communications Applications Conference (SIU), pp. 337-340, 23-25 April 2014, Trabzon, Turkey (In Turkish). https://ieeexplore.ieee.org/document/6830234
• E. Aycan, B. Özbek, “Performance of cell selection algorithms in wireless networks,” 20th Signal Processing and Communications Applications Conference (SIU), pp.1-4, 20-22 April 2012, Fethiye, Turkey (In Turkish). https://ieeexplore.ieee.org/document/6204720
• B. Özbek, D. Le Ruyet, “On adaptive feedback for cooperative multi-antenna cellular systems,” 23rd GRETSI Symposium on Signal and Image Processing, 5-8 September 2011, Bordeaux, France (in French).
• İ. Baştürk, B. Özbek, “Fair resource allocation for multi-user MISO-OFDMA systems,” 19th Conference on Signal Processing and Communications Applications (SIU), pp. 506-509, 20-22 April 2011, Antalya, Turkey. (In Turkish) https://ieeexplore.ieee.org/document/5929698
• E. Aycan, B. Özbek, “Capacity performances of home base stations with multiple antennas in indoor environment,” 19th Conference on Signal Processing and Communications Applications (SIU), pp. 514-517, 20-22 April 2011, Antalya, Turkey (in Turkish). https://ieeexplore.ieee.org/document/5929700
• R. F. Üstok, B. Özbek, “Spectrum sensing based on cyclostationary feature detection for cognitive radios with multiple antennas,” 19th Conference on Signal Processing and Communications Applications (SIU), pp. 550-553, 20-22 April 2011, Antalya, Turkey (in Turkish). https://ieeexplore.ieee.org/document/5929709
• B. Özbek, D. Le Ruyet, “Transmit beamforming techniques for multicast wireless communication systems,” 17th Signal Processing and Communications Applications Conference (SIU), pp. 241-244, 9-11 April 2009, Antalya, Turkey (in Turkish). https://ieeexplore.ieee.org/document/5136377
• İ. Baştürk, B. Özbek, “Performance of EM-based channel estimation for STBC-OFDM systems,” 17th Signal Processing and Communications Applications Conference (SIU), pp. 85-88, 9-11 April 2009, Antalya, Turkey (in Turkish). https://ieeexplore.ieee.org/document/5136338
• R. F. Üstok, B. Özbek, “Spectrum sensing based on energy detection for cognitive radio systems with multiple antennas,” 17th Signal Processing and Communications Applications Conference (SIU), pp. 396-399, 9-11 April 2009, Antalya, Turkey (in Turkish). https://ieeexplore.ieee.org/document/5136416
• B. Özbek, D. Le Ruyet, “Sum-rate maximized adaptive subcarrier and bit allocation for multiuser OFDM systems with genetic algorithm,” 16th Signal Processing and Communications Applications Conference (SIU), 20-22 April 2008, Didim, Turkey (in Turkish). https://ieeexplore.ieee.org/document/4632674
• İ. Baştürk, B. Özbek, “Pilot based iterative channel estimation for OFDM systems,” 16th Signal Processing and Communications Applications Conference (SIU), 20-22 April 2008, Didim, Turkey (in Turkish). https://ieeexplore.ieee.org/document/4632584
• D. Le Ruyet, B. Özbek, H. Khanfir, “Study on performance of MISO communication systems with feedback information,” 21st GRETSI Symposium on Signal and Image Processing, 11-14 September 2007, Troyes, France (in French).
• İ. Baştürk, B. Özbek, “Performance of pilot-based EM channel estimation for OFDM systems,” 15th Signal Processing and Communications Applications Conference (SIU), 11-13 June 2007, Eskişehir, Turkey (in Turkish). https://ieeexplore.ieee.org/document/4298631
• B. Özbek, R. Yılmaz, “Adaptive channel estimation for space-time block coded OFDM systems with 3 transmit antennas,” 11th Signal Processing and Communications Applications Conference (SIU), 18-20 June 2003, İstanbul, Turkey (in Turkish).
• B. Özbek, D. Le Ruyet, M. Bellanger, “Non-orthogonal space-time block coding design for 3 transmit antennas,” 19th GRETSI Symposium on Signal and Image Processing, 8-11 September 2003, Paris, France. https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.77.4872
• B. Özbek, R. Yılmaz, “Performance of space-frequency block coded OFDM systems in frequency selective channels,” 10th Signal Processing and Communications Applications Conference, (SIU), 12-14 June 2002, Denizli, Turkey (in Turkish).
• B. Öngen, R. Yılmaz, “Image compression with wavelet transform and hierarchical vector quantization,” 7th Signal Processing and Communications Applications Conference (SIU), 16-19 June 1999, Ankara, Turkey (in Turkish).