Vishnu V. Ratnam

According to our database, Vishnu V. Ratnam authored at least 24 papers between 2012 and 2023.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2023

Optimal preprocessing of WiFi CSI for sensing applications.

Vishnu V. Ratnam, Hao Chen, Hao-Hsuan Chang, Abhishek Sehgal, Jianzhong Zhang

CoRR, 2023

Spectrally Efficient Guaranteed Rate Scheduling for Heterogeneous QoS Constrained Wireless Networks.

Geetha Chandrasekaran, Gustavo de Veciana, Vishnu V. Ratnam, Hao Chen, Jianzhong Zhang

Proceedings of the 21st International Symposium on Modeling and Optimization in Mobile, 2023

Delay and Jitter Constrained Wireless Scheduling with Near-Optimal Spectral Efficiency.

Geetha Chandrasekaran, Gustavo de Veciana, Vishnu V. Ratnam, Hao Chen, Charlie Zhang

Proceedings of the 34th IEEE Annual International Symposium on Personal, 2023

2022

Joint Phase-Time Arrays: A Paradigm for Frequency-Dependent Analog Beamforming in 6G.

Vishnu V. Ratnam, Jianhua Mo, Ahmad AlAmmouri, Boon Loong Ng, Jianzhong Zhang, Andreas F. Molisch

IEEE Access, 2022

Extending Uplink Coverage of mmWave and Terahertz Systems Through Joint Phase-Time Arrays.

Ahmad AlAmmouri, Jianhua Mo, Vishnu V. Ratnam, Boon Loong Ng, Robert W. Heath Jr., Juho Lee, Jianzhong Zhang

IEEE Access, 2022

2021

FadeNet: Deep Learning-Based mm-Wave Large-Scale Channel Fading Prediction and its Applications.

Vishnu V. Ratnam, Hao Chen, Sameer Pawar, Bingwen Zhang, Charlie Jianzhong Zhang, Young-Jin Kim, Soonyoung Lee, Minsung Cho, Sung-Rok Yoon

IEEE Access, 2021

2020

Performance of Analog Beamforming Systems With Optimized Phase Noise Compensation.

Vishnu V. Ratnam

IEEE Trans. Signal Process., 2020

2019

Continuous Analog Channel Estimation-Aided Beamforming for Massive MIMO Systems.

Vishnu V. Ratnam, Andreas F. Molisch

IEEE Trans. Wirel. Commun., 2019

Periodic Analog Channel Estimation Aided Beamforming for Massive MIMO Systems.

Vishnu V. Ratnam, Andreas F. Molisch

IEEE Trans. Wirel. Commun., 2019

Optimal Reference Signal Design for Phase Noise Compensation in Multi-carrier Massive MIMO Systems.

Vishnu V. Ratnam

CoRR, 2019

Coordinated Dynamic Spectrum Sharing for 5G and Beyond Cellular Networks.

Jeongho Jeon, Russell D. Ford, Vishnu V. Ratnam, Joonyoung Cho, Jianzhong Zhang

IEEE Access, 2019

Coordinated Spectrum Sharing Framework for beyond 5G Cellular Networks.

Jeongho Jeon, Russell D. Ford, Vishnu V. Ratnam, Joonyoung Cho, Jianzhong Zhang

Proceedings of the 2019 IEEE Global Communications Conference, 2019

2018

Hybrid Beamforming With Selection for Multiuser Massive MIMO Systems.

Vishnu V. Ratnam, Andreas F. Molisch, Ozgun Y. Bursalioglu, Haralabos C. Papadopoulos

IEEE Trans. Signal Process., 2018

Reference Tone Aided Transmission for Massive MIMO: Analog Beamforming without CSI.

Vishnu V. Ratnam, Andreas F. Molisch

Proceedings of the 2018 IEEE International Conference on Communications, 2018

Multi-Antenna FSR Receivers: Low Complexity, Non-Coherent, Massive Antenna Receivers.

Vishnu V. Ratnam, Andreas F. Molisch

Proceedings of the IEEE Global Communications Conference, 2018

2017

Hybrid Beamforming with Selection for Multi-user Massive MIMO Systems.

Vishnu V. Ratnam, Andreas F. Molisch, Ozgun Y. Bursalioglu, Haralabos C. Papadopoulos

CoRR, 2017

Hybrid Beamforming for Massive MIMO: A Survey.

Andreas F. Molisch, Vishnu V. Ratnam, Shengqian Han, Zheda Li, Sinh Le Hong Nguyen, Linsheng Li, Katsuyuki Haneda

IEEE Commun. Mag., 2017

Preprocessor design for hybrid preprocessing with selection in massive MISO systems.

Vishnu V. Ratnam, Ozgun Y. Bursalioglu, Haralabos C. Papadopoulos, Andreas F. Molisch

Proceedings of the IEEE International Conference on Communications, 2017

Bit and Power Allocation in QAM Capable Multi-Differential Frequency-Shifted Reference UWB Radio.

Vishnu V. Ratnam, Andreas F. Molisch, Amr Alasaad, Faisal Alawwad, Hatim M. Behairy

Proceedings of the 2017 IEEE Global Communications Conference, 2017

2016

MIMO Systems With Restricted Pre/Post-Coding - Capacity Analysis Based on Coupled Doubly Correlated Wishart Matrices.

Vishnu V. Ratnam, Andreas F. Molisch, Haralabos C. Papadopoulos

IEEE Trans. Wirel. Commun., 2016

Capacity Analysis of Interlaced Clustering in a Distributed Transmission System With/Without CSIT.

Vishnu V. Ratnam, Andreas F. Molisch, Giuseppe Caire

IEEE Trans. Wirel. Commun., 2016

Diversity versus Training Overhead Trade-Off for Low Complexity Switched Transceivers.

Vishnu V. Ratnam, Andreas F. Molisch, Naif Rabeah, Faisal Alawwad, Hatim M. Behairy

Proceedings of the 2016 IEEE Global Communications Conference, 2016

2015

Capacity analysis of interlaced clustering in a distributed antenna system.

Vishnu V. Ratnam, Giuseppe Caire, Andreas F. Molisch

Proceedings of the 2015 IEEE International Conference on Communications, 2015

2012

Jointly cooperative decode-and-forward relaying for secondary spectrum access.

Songze Li, Urbashi Mitra, Vishnu V. Ratnam, Ashish Pandharipande

Proceedings of the 46th Annual Conference on Information Sciences and Systems, 2012