Journal Papers

S. Khavari, S. Farahmand, S. M. Razavizadeh and I. Lee, "Optimum Solutions for Weighted Sum-Rate of NOMA and TDMA in Wireless Powered IoT Networks", in IEEE Internet of Things Journal, 2023.

A. H. Jazi, S. M. Razavizadeh and T. Svensson, "Integrated Access and Backhaul (IAB) in Cell-Free Massive MIMO Systems", in IEEE Access, 2023.

A. Rafieifar, H. Ahmadinejad, S. M. Razavizadeh and J. He, "Secure Beamforming in Multi-User Multi-IRS Millimeter Wave Systems", in IEEE Transactions on Wireless Communications, 2023.

S. Fatemeh. Zamanian and S. M. Razavizadeh, "3D beamforming in Intelligent Reflecting Surface (IRS)-assisted multi-user cognitive radio networks", in Physical Communication, 2022.

M. Parhizgar and S. M. Razavizadeh, "AN-aided beamforming for IRS-assisted SWIPT systems", in Physical Communication, 2022.

A. Mahmoudi, B. Abolhassani, S. M. Razavizadeh, and H. H. Nguyen, "User Clustering and Resource Allocation in Hybrid NOMA-OMA Systems Under Nakagami-m Fading", in IEEE Access, 2022.

N. Ghiasi, S. Mashhadi, S. Farahmand, S. M. Razavizadeh, and I. Lee, "Energy Efficient AP Selection for Cell-Free Massive MIMO Systems: Deep Reinforcement Learning Approach", in IEEE Transactions on Green Communications and Networking, 2022.

S. Fatemeh Zamanian, M. H. Kahaei S. M. Razavizadeh, T. Svensson "Attacking Massive MIMO Cognitive Radio Networks by Optimized Jamming", IEEE Open Journal of the Communications Society, 2021.

A. Rafieifar, S. M. Razavizadeh, "Secrecy Rate Maximization in Multi-IRS Millimeter Wave Networks", Elsevier Physical Communication, 2021.

S.F. Zamanian, S. M. Razavizadeh, Q. Wu "Vertical Beamforming in Intelligent Reflecting Surface-Aided Cognitive Radio Networks", IEEE Wireless Communications Letters, 2021.

H. Soltanizadeh, S. Farahmand S. M. Razavizadeh, "Coordinated versus uncoordinated channel tracking for high-rate internet of things in multiuser massive MIMO: Algorithms and performance", Elsevier Signal Processing, 2021.

S. Mashhadi, N. Ghiasi, S. Farahmand, S. M. Razavizadeh, "Deep Reinforcement Learning Based Adaptive Modulation With Outdated CSI", IEEE Communications Letters, 2021.

A. Mahmoudi, B Abolhassani, S. M. Razavizadeh, H. H. Nguyen "Outage Balancing in Downlink NOMA over Nakagami-m Fading Channels", IEEE Transactions on Vehicular Technology, 2021.

S. Bagherinejad and S. M. Razavizadeh, "Direction-Based Jamming Detection and Suppression in mmWave Massive MIMO Networks", IET Communications, 2021.

F. S. Mirhosseini, A. Tadaion, S. M. Razavizadeh, "Spectral Efficiency of Dense Multicell Massive MIMO Networks in Spatially Correlated Channels", IEEE Transactions on Vehicular Technology, 2020.

Z. Goli, S. M. Razavizadeh, H Farhadi, T. Svensson "Secure Simultaneous Information and Power Transfer for Downlink Multi-user Massive MIMO", IEEE Access, 2020.

A. Sheikhi, S. M. Razavizadeh, I. Lee "A Comparison of TDD and FDD Massive MIMO Systems Against Smart Jamming", IEEE Access, 2020.

H. Akhlaghpasand, Emil Björnson, and S. M. Razavizadeh, "Jamming-Robust Uplink Transmission for Spatially Correlated Massive MIMO Systems", IEEE Transactions on Communications, 2020.

M. Ahmadabadian, S. Khavari, and S. M. Razavizadeh, "Energy Efficiency Maximization in FDD Massive MIMO Systems with Channel Aging", Wireless Networks, 2020.

M. Baianifar, S. M. Razavizadeh, S. Khavari, and T. Svensson, "Effect of Users Height Distribution on the Coverage of mmWave Cellular Networks with 3D Beamforming", IEEE Access, 2019.

H. Akhlaghpasand, Emil Björnson, and S. M. Razavizadeh, "Jamming Suppression in Massive MIMO Systems", IEEE Transactions on Circuits and Systems II: Express Briefs, 2019.

M. Baianifar, S. M. Razavizadeh, H. Akhlaghpasand, and I. Lee, "Energy efficiency maximization in mmWave wireless networks with 3D beamforming," in Journal of Communications and Networks", in Journal of Communications and Networks, vol. 21, no. 2, pp. 125-135, April 2019.

Hadis Abarghouyi, S. M. Razavizadeh, and Emil Björnson, "QoE-Aware Beamforming Design for Massive MIMO Heterogeneous Networks", IEEE Transactions on Vehicular Technology, vol. 67, no. 9, pp. 8315-8323, Sep. 2018.

Tan Tai Do, Emil Björnson, Erik G. Larsson, S. M. Razavizadeh, "Jamming Resistant Receivers for the Massive MIMO Uplink", IEEE Transactions on Information Forensics and Security, vol. 13, no. 1, pp. 210-223, Jan. 2018.

H. Akhlaghpasand, S. M. Razavizadeh, Emil Björnson, Tan Tai Do, "Jamming Detection in Massive MIMO Systems", IEEE Wireless Communications Letters, vol. 7, no. 2, pp. 242-245, April 2017.

J. Rostampoor, S. M. Razavizadeh, and Inkyu Lee, "Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks", IEEE Transactions on Vehicular Technology, vol. 66, no. 9, pp. 7888-7896, Sep. 2017.

H. Pirzadeh, S. M. Razavizadeh, and Emil Bjornson, "Subverting Massive MIMO by Smart Jamming", IEEE Wireless Communications Letters, Vol. 5 , no. 1 , pp. 20-23 , Feb. 2016 .

S. M. Razavizadeh, Minki Ahn, and Inkyu Lee, " Three Dimensional Beamforming: New Enabling Technology for Fifth Generation Wireless Networks", IEEE Signal Processing Magazine, Vol.31, No.6, pp.94-101, Nov. 2014.

J. Banar and S. M. Razavizadeh, "Resource Allocation and Relay Selection In Full-Duplex Cooperative Orthogonal Frequency Division Multiple Access Networks", Elsevier's Computers and Electrical Engineering journal, vol. 61, pp. 223-234, July 2017.

S. Khavari and S. M. Razavizadeh, "Joint Tilt Angle Adaptation and Beamforming in Multicell Multiuser Cellular Networks", Elsevier's Computers and Electrical Engineering journal, vol. 61, pp. 195-207, July 2017.

A. Rahmanpour, Vahid T. Vakili and S. M. Razavizadeh, "Enhancement of Physical Layer Security Using Destination Artificial Noise Based on Outage Probability", Springer’s Wireless Personal Communications, Vol. 95 , no. 2 , pp. 1553-1565 , July 2017.

H. Akhlaghpasand and S. M. Razavizadeh, "Adaptive Pilot Decontamination in Multicell Very Large Multiuser MIMO Systems", Springer's Telecommunication Systems, 2017.

A. Habibzadeh, S. Shirvani Moghaddam, S. M. Razavizadeh, M. Shirvanimoghaddam, "Modeling and Analysis of Traffic-Aware Spectrum Handover Schemes in Cognitive HetNets", Transactions on Emerging Telecommunications Technologies (Wiley), May 2017.

A. Habibzadeh, S. Shirvani Moghaddam, S. M. Razavizadeh, M. Shirvanimoghaddam, "Analysis and Performance Evaluation of an Efficient Handover Algorithm for Cognitive HetNets", International Journal of Communication Systems (Wiley), March 2017.

M. Baianifar, S. M. Razavizadeh, "Power Efficiency of Massive MIMO Relay Interference Channel", Journal of Iranian Association of Electrical and Electronics Engineers, Feb. 2017.

F. Askariyan, S. M. Razavizadeh and F. Haddadi, " On the Achievable Rate-Regions for the Gaussian Two-way Diamond Channels", , accepted for publication in Iranian Journal of Electrical and Electronic Engineering (IJEEE), 2015.

S. Mohammadkhani, M. H. Kahaei and S. M. Razavizadeh , " Robust Beamforming and Power Allocation in Cognitive Radio Relay Networks with Imperfect Channel State Information", IET communications, Vol. 8, no.9, June 2014.

M. Khaleghi, M. Khaleghi and S. M. Razavizadeh, "Tilted-THP over Correlated Time Varying MIMO Channels";, Mobile Computing, vol. 3, iss. 1, Feb. 2014.

P. Drakhshan, GR. Dadashzadeh, F. Razzazi and S. M. Razavizadeh, "Power and Time Slot Allocation in Cognitive Relay Networks Using Particle Swarm Optimization", The Scientific World Journal (Hindawi), Aug. 2013.

M. Khaleghi, H. Khaleghi and S. M. Razavizadeh, "Power Optimization of Tilted Tomlinson-Harashima Precoder in MIMO Channels with Imperfect Channel State Information", Journal of Optimization (Hindawi), 2013.

S. Mohammadkhani, H. Kahaei and S. M. Razavizadeh, "Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay Networks", International Journal of Information and Communication Technology (IJICT), Vol.5, No.2, pp.11-17, Spring 2013.

M. Dashti, P. Azmi, K. Navaie and S. M. Razavizadeh, "Ergodic Sum Rate Maximization for Underlay Spectrum Sharing with Heterogeneous Traffic", Wireless Personal Communications (Springer), Sep. 2012.

Z. Mohades, V. Tabataba-Vakili and S. M. Razavizadeh and D. A. Moghadam, “Dynamic Fractional Frequency Reuse (DFFR) with AMC and Random Access in WiMAX System”, Wireless Personal Communications (Springer), March 2012.

P. Drakhshan, GR. Dadashzadeh, F. Razzazi and S. M. Razavizadeh, "Bio-Inspired Distributed Beamforming for Cognitive Radio Networks in Non-Stationary Environment", IEICE Electronics Express, Vol. 8, No. 6. 2011.

Z. Mohades, V. T.Vakili and S. M. Razavizadeh, "Enhanced Dynamic Fractional Frequency Reuse in WiMAX Systems Using AMC and Power Control", International Journal on Communications Antenna and Propagation (IRECAP ), Vol. 1. n. 4, Aug. 2011.

P. Drakhshan, GR. Dadashzadeh, F. Razzazi and S. M. Razavizadeh, "Minimum Power Transmission Design for Cognitive Radio Networks in Non-Stationary Environment", IEICE Electronics Express, Vol. 8, No. 3. Feb. 2011.

M. Farmahini-Farahani, A. Ghasemi and S. M. Razavizadeh, “Sequential Interference-Aware Admission Control in Underlay Cognitive Radio Networks”, International Journal of Information and Communication Technology (IJICT), Sep. 2011.

N. Noori, S. M. Razavizadeh and A. Attar, “Joint beamforming and power control in MIMO cognitive radio networks,” IEICE Electronics Express, Vol. 7, No.3,pp. 203-208, Feb. 2010.

A. Ghasemi and S. M. Razavizadeh, “A Simple MAC Protocol for Cognitive Wireless Networks”, IEICE Transactions on Communications, Vol.E92-B,No.12, Dec. 2009.

S. M. Razavizadeh, Amir K. Khandani, V. Tabataba-Vakili and W. Tong, “Space-Time Precoding for Downlink Transmission in Multiple Antenna CDMA Systems", IEEE Transactions on Vehicular Technology, vol. 56, issue 5, pp. 2590 - 2602, Sept. 2007.

S. M. Razavizadeh, V. Tabataba-Vakili and P. Azmi, “A New Modified Viterbo-Boutros Sphere Decoding Algorithm,” Iranian Journal of Science and Technology (IJST), vol. 30, no. B2, pp.285-290, April 2006.

V. T. Vakili, S. M. Razavizadeh, and P. Azmi, "Performance and Complexity Comparison of some Multiuser Detectors in Multi-antenna CDMA Systems over Flat Fading Channels", International Journal of Engineering , IUST ,vol. 3, issue 18, pp. 11-22, Oct.

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Conference Papers

H. Soltanizadeh, S. Farahmand and S. M. Razavizadeh, "Uncoordinated Channel Tracking for High-Rate Internet of Things in Multiuser Massive MIMO", 10th International Symposium on Telecommunications (IST), 2020.

A. Izadi and S. M. Razavizadeh, O. O. Saatlou "Power Allocation for Downlink Training in Cell-Free Massive MIMO Networks", 10th International Symposium on Telecommunications (IST), 2020.

S. M. Razavizadeh, T. Svensson "3D Beamforming in Reconfigurable Intelligent Surface-assisted Wireless Communication Networks", 24th IEEE International ITG Workshop on Smart Antennas (WSA), 2020.

M. A. Sheikhi and S. M. Razavizadeh, "Security Vulnerability of FDD Massive MIMO Systems in Downlink Training Phase", in Proc. of the 9th International Symposium on Telecommunications (IST), Tehran, Iran, Dec. 2018.

S. M. MirhoseiniNejad, A. Rahmanpour and S. M. Razavizadeh, "Phase Jamming Attack: A Practical Attack on Physical layer-Based Key Derivation", in Proc. of the 15th International Conference on Information Security and Cryptology (ISCISC), Tehran, 2018.

M. Baianifar, S. Khavari, S. M. Razavizadeh, Tommy Svensson, "Impact of User Height on the Coverage of 3D Beamforming-Enabled Massive MIMO Systems", in Proc. of the 28th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Montreal, Canada, Oct. 2017.

J. Banar and S. M. Razavizadeh , "On the Uplink Spectral Efficiency of Full-duplex Cooperative OFDMA Systems", in Proc. of the 8th International Symposium on Telecommunications (IST), Tehran, Iran, Sep. 2016.

A. Habibzadeh, S. S. Moghaddam, S. M. Razavizadeh , and M. Shirvanimoghaddam "Spectrum Handover Mechanism for Secondary Users in Cognitive Femtocell HetNets", in Proc. of the 24th Iranian Conference on Electrical Engineering, ICEE 2016, Shiraz, Iran, May. 2016.

A. Habibzadeh, Sh. Shirvani, and S. M. Razavizadeh , "A Novel Handover Decision-Making Algorithm for HetNets", in proc. of IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), Dec. 2015.

J. Rostampoor and S. M. Razavizadeh , "Energy Efficiency Optimization in MIMO Two-way Relay Networks", in Proc. of the 23th Iranian Conference on Electrical Engineering (ICEE'15), Tehran, Iran, May. 2015.

J. Sayehvand and S. M. Razavizadeh, "An Antenna Selection Method for Two-way Relay Networks", in Proc. of the 21th IEEE SCVT'14, Delft, Netherlands, Nov. 2014.

M. Raeisi, S. M. Razavizadeh and I. Lee, "Distributed Space-Time Coding for Two-way Relay Networks", in Proc. of the 79th IEEE Vehicular Technology Conference (VTC'14-spring), Seoul, Korea, May. 2014.

S. Mohammadkhani, S. M. Razavizadeh and I. Lee, "Robust Filter and Forward Relay Beamforming with Spherical Channel State Information Uncertainties", in Proc. of the IEEE International Conference on Communications (ICC'14), Sydney, Australia, June 2014.

S. Mohammadkhani, H. Kahaei and S. M. Razavizadeh, “Cooperative Filter-and-Forward Beamforming in Cognitive Radio for Interference Management ”, submitted to the Sixth International Symposium on Telecommunications (IST2012), Tehran, Iran, Nov. 2012.

M. Khaleghi, H. Khaleghi and S. M. Razavizadeh, “Transmit Power Reduction in MIMO-THP Using Tilted Constellation”, In Proc. The 20th Iranian Conference on Electrical Engineering (ICEE2012) , Tehran, Iran, May 2012.

O. Javidbakht, N. Nederi-Alizadeh and S. M. Razavizadeh, "Dynamic Relay Selection and Resource Allocation in Cooperative Networks Based on OFDM", in Proc. European Wireless 2011, Vienna, Austria, April 27-29, 2011.

P. Drakhshan, GR. Dadashzadeh, F. Razzazi and S. M. Razavizadeh, "A Comparison of Radiometry and Modified Periodogram Spectrum Detection in Wireless Radio Networks" In Proc. The IEEE International Conference on Computer and Automation Engineering (ICCIA), Tianjin, China, 2010.

N. Noori and S. M. Razavizadeh, “Cognitive Beamforming Using Genetic Algorithm, ” in Proc. IEEE International Symposium on Antennas and Propagation, AP-S, Toronto, Canada, July 2010.

S. M. Razavizadeh, "Cognitive Radios and Their Relation with TV Broadcast Networks", in Proc. 3rd Broadcast Eng. Conference, Nov. 2009.

M.A. Beygi and S. M. Razavizadeh, “Cooperative Beamforming in Cognitive Radio Networks”, in Proc. The IFIP Wireless Days’09, Paris, France, Dec., 15-17, 2009.

N. Noori and S. M. Razavizadeh, “Limiting Harmful Interference to the Primary Users Through Joint Power Allocation and Beamforming in the Uplink of Cognitive Radio Networks”, in Proc. The 20th Personal, Indoor and Mobile Radio Communications Symposium 2009 (PIMRC'09) , Tokyo, Japan, Sep. 2009.

A. Ghaznavi and S. M. Razavizadeh, “A Precoding Technique for Joint Relaying and Broadcasting in Cognitive Radio Networks” in proc. the IEEE Pacific Rim Conference on Communications, Computers and Signal Processing(PACRIM’09), Victoria, B.C., Canada, Aug. 2009.

N. Noori and S. M. Razavizadeh, “Minimum SINR Maximization in the Downlink of Cognitive Radio Networks” in proc. the IEEE Pacific Rim Conference on Communications, Computers and Signal Processing(PACRIM’09),Victoria, B.C., Canada, Aug. 2009.

A. Ghasemi , A. Zarei and S. M. Razavizadeh, “Stability Based Criterion for Call Admission Control in Wireless Cellular Networks” in Proc. Wireless Telecom. Symposium, WTS’09, Prague, Czech Republic, April 2009.

A. Jafarnia, H. Aghaeinia, S. Daneshmand and S. M. Razavizadeh, “On Multi-user Detection in CDMA Based Cooperative Networks” in Proc. IEEE Sarnoff Symposium, Princeton, USA, 30 March- 1 April, 2009.

S. M. Razavizadeh, "Cooperative Diversity in Downlink of Cellular CDMA Systems Using Maximum Ratio Precoding", in proc. The 14th Asia-Pacific Conference on Communications, APCC 2008, Tokyo, Japan, Oct. 2008.

M. Majidi, H. Aghaeinia and S. M. Razavizadeh, "Symbol Transmission Ordering for Detection Improvement in Downlink Transmission of MC-CDMA Systems", in Proc. of the Iranian Conference on Electrical Engineering, ICEE 2007, Tehran, May 2007.

M. Majidi, H. Aghaeinia and S. M. Razavizadeh, "On the Receiver Design for Downlink of MIMO MC-CDMA Systems over Frequency Selective Rayleigh Fading Channels", in Proc. the 13th Symposium on Communications and Vehicular Technology, SCVT 2006, Belgium, Nov. 2006.

S. M. Razavizadeh, P. Azmi and V.T.Vakili, “Group Transmission in Downlink of Overloaded CDMA Systems”, in Proc. the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2006, Helsinki, Finland, Sep. 2006.

S. M. Razavizadeh, M. Fardis and N. Noori, “Joint Transmit Precoding in Downlink of MISO MC-CDMA Systems”, in Proc. IEEE Sarnoff Symposium, Princeton, USA, March 2006.

S. M. Razavizadeh, V.T. Vakili, P. Azmi and M. Fardis, “On Space-Time Block Coding in Downlink of Multiuser CDMA Systems,” in Proc. IEEE Symposium on Signal Processing and Information Technology, ISSPIT 2005, Athens, Greece, December 2005.

S. M. Razavizadeh, V.T. Vakili, A.K. Khandani and M. Fardis, "A New Precoding Scheme for CDMA Systems Over Frequency Selective Fading Channels", in Proc. International Symposium on Communication, IST2005, Shiraz, Iran, Sept. 2005.

N. Noori, H. Oraizi and S. M. Razavizadeh, "Evaluation of Multiple Antenna System Capacity in Subway Tunnels", in Proc. International Symposium on Antennas and Propagation, ISAP'05, Seoul, South Korea, Aug. 2005.

S. M. Razavizadeh and V.T. Vakili, "Interference Cancellation in CDMA systems using Transmit Pre-processing", in Proc. of the Iranian Conference on Electrical Engineering, ICEE'05, Zanjan, Iran, May 2005.

S. M. Razavizadeh, A.K. Khandani and V. T. Vakili, “Linear Precoding in Multi-Antenna CDMA Systems using Space-Time Spreading Codes”, in Proc. the 39th Conference on Information Sciences and Systems, CISS 2005, Johns Hopkins University, Baltimore, USA, March 2005.

S. M. Razavizadeh, V.T. Vakili, and P. Azmi, "A New Faster Sphere Decoder for MIMO systems", in Proc. IEEE Symposium on Signal Processing and Information Technology, ISSPIT 2003, Darmstadt, Germany, Dec. 2003.

S. M. Razavizadeh , V.T.Vakili, Paiez Azmi, “A New Modified Sphere Multiuser Detector for DS-CDMA Systems”, In Proc. the 10th Symposium on Communications and Vehicular Technology, SCVT 2003, Netherlands, Nov. 2003.

S. M. Razavizadeh , V.T.Vakili, Paeiz Azmi, “Comparison of Several Multiple Antenna Multiuser Detectors in Wireless CDMA Systems”, In Proc. the Fifth IEEE International Conference on Mobile and Wireless Communications Networks 2003, MWCN 2003 , Singapore, Sep. 2003.

S. M. Razavizadeh and M. Soleymani, “Design and Implementation of a Channel Coder for telemetry System of a LEO satellite”, In Proc. the first Iranian Aerospace Conference, Tehran, Iran, Jul. 2001.

M. Soleymani and S. M. Razavizadeh, “LEO Satellite Channel Modeling”, In Proc. the 5th Asia-Pacific Conference on Multilateral Cooperation in Space Technology and Application, AP-MCSTA’99, Tehran, Iran, Dec. 1999.