Vishnu V. Ratnam

Publication Activity (10 Years)

Years Active: 2015-2024
Publications (10 Years): 29

Top Topics

Channel Estimation

Top Venues

IEEE Trans. Wirel. Commun.

Publications

Vishnu V. Ratnam, Bilal Sadiq, Hao Chen, Wei Sun, Shunyao Wu, Boon Loong Ng, Jianzhong Zhang
WiDRa - Enabling Millimeter-Level Differential Ranging Accuracy in Wi-Fi Using Carrier Phase. CoRR (2024)
Hao-Hsuan Chang, Vishnu V. Ratnam, Hao Chen, Junsu Choi, Charlie Jianzhong Zhang
Multi-Person Respiration Rate Estimation With Single Pair Of Transmit And Receive Antenna. ICASSP (2024)
Geetha Chandrasekaran, Gustavo De Veciana, Vishnu V. Ratnam, Hao Chen, Charlie Zhang
Delay and Jitter Constrained Wireless Scheduling with Near-Optimal Spectral Efficiency. PIMRC (2023)
Vishnu V. Ratnam, Jianhua Mo, Ahmad AlAmmouri, Boon Loong Ng, Jianzhong Zhang, Andreas F. Molisch
Joint Phase-Time Arrays: A Paradigm for Frequency-Dependent Analog Beamforming in 6G. CoRR (2023)
Geetha Chandrasekaran, Gustavo de Veciana, Vishnu V. Ratnam, Hao Chen, Jianzhong Zhang
Spectrally Efficient Guaranteed Rate Scheduling for Heterogeneous QoS Constrained Wireless Networks. WiOpt (2023)
Vishnu V. Ratnam, Hao Chen, Hao-Hsuan Chang, Abhishek Sehgal, Jianzhong Zhang
Optimal preprocessing of WiFi CSI for sensing applications. CoRR (2023)
Vishnu V. Ratnam, Jianhua Mo, Ahmad AlAmmouri, Boon Loong Ng, Jianzhong Zhang, Andreas F. Molisch
Joint Phase-Time Arrays: A Paradigm for Frequency-Dependent Analog Beamforming in 6G. IEEE Access 10 (2022)
Ahmad AlAmmouri, Jianhua Mo, Vishnu V. Ratnam, Boon Loong Ng, Robert W. Heath Jr., Juho Lee, Jianzhong Zhang
Extending Uplink Coverage of mmWave and Terahertz Systems Through Joint Phase-Time Arrays. IEEE Access 10 (2022)
Vishnu V. Ratnam, Hao Chen, Sameer Pawar, Bingwen Zhang, Charlie Jianzhong Zhang, Young-Jin Kim, Soonyoung Lee, Minsung Cho, Sung-Rok Yoon
FadeNet: Deep Learning-Based mm-Wave Large-Scale Channel Fading Prediction and its Applications. IEEE Access 9 (2021)
Vishnu V. Ratnam
Performance of Analog Beamforming Systems With Optimized Phase Noise Compensation. IEEE Trans. Signal Process. 68 (2020)
Vishnu V. Ratnam, Andreas F. Molisch
Continuous Analog Channel Estimation Aided Beamforming for Massive MIMO Systems. CoRR (2019)
Jeongho Jeon, Russell D. Ford, Vishnu V. Ratnam, Joonyoung Cho, Jianzhong Zhang
Coordinated Dynamic Spectrum Sharing for 5G and Beyond Cellular Networks. IEEE Access 7 (2019)
Vishnu V. Ratnam, Andreas F. Molisch
Periodic Analog Channel Estimation Aided Beamforming for Massive MIMO Systems. CoRR (2019)
Vishnu V. Ratnam, Andreas F. Molisch
Continuous Analog Channel Estimation-Aided Beamforming for Massive MIMO Systems. IEEE Trans. Wirel. Commun. 18 (12) (2019)
Vishnu V. Ratnam
Optimal Reference Signal Design for Phase Noise Compensation in Multi-carrier Massive MIMO Systems. CoRR (2019)
Jeongho Jeon, Russell D. Ford, Vishnu V. Ratnam, Joonyoung Cho, Jianzhong Zhang
Coordinated Spectrum Sharing Framework for beyond 5G Cellular Networks. GLOBECOM (2019)
Vishnu V. Ratnam, Andreas F. Molisch
Periodic Analog Channel Estimation Aided Beamforming for Massive MIMO Systems. IEEE Trans. Wirel. Commun. 18 (3) (2019)
Vishnu V. Ratnam, Andreas F. Molisch
Multi-Antenna FSR Receivers: Low Complexity, Non-Coherent, Massive Antenna Receivers. GLOBECOM (2018)
Vishnu V. Ratnam, Andreas F. Molisch, Ozgun Y. Bursalioglu, Haralabos C. Papadopoulos
Hybrid Beamforming With Selection for Multiuser Massive MIMO Systems. IEEE Trans. Signal Process. 66 (15) (2018)
Vishnu V. Ratnam, Andreas F. Molisch
Reference Tone Aided Transmission for Massive MIMO: Analog Beamforming without CSI. ICC (2018)
Vishnu V. Ratnam, Andreas F. Molisch, Amr Alasaad, Faisal Alawwad, Hatim M. Behairy
Bit and Power Allocation in QAM Capable Multi-Differential Frequency-Shifted Reference UWB Radio. GLOBECOM (2017)
Vishnu V. Ratnam, Andreas F. Molisch, Ozgun Y. Bursalioglu, Haralabos C. Papadopoulos
Hybrid Beamforming with Selection for Multi-user Massive MIMO Systems. CoRR (2017)
Andreas F. Molisch, Vishnu V. Ratnam, Shengqian Han, Zheda Li, Sinh Le Hong Nguyen, Linsheng Li, Katsuyuki Haneda
Hybrid Beamforming for Massive MIMO: A Survey. IEEE Commun. Mag. 55 (9) (2017)
Vishnu V. Ratnam, Ozgun Y. Bursalioglu, Haralabos C. Papadopoulos, Andreas F. Molisch
Preprocessor design for hybrid preprocessing with selection in massive MISO systems. ICC (2017)
Vishnu V. Ratnam, Andreas F. Molisch, Giuseppe Caire
Capacity Analysis of Interlaced Clustering in a Distributed Transmission System With/Without CSIT. IEEE Trans. Wirel. Commun. 15 (4) (2016)
Vishnu V. Ratnam, Andreas F. Molisch, Naif Rabeah, Faisal Alawwad, Hatim M. Behairy
Diversity versus Training Overhead Trade-Off for Low Complexity Switched Transceivers. GLOBECOM (2016)
Vishnu V. Ratnam, Andreas F. Molisch, Haralabos C. Papadopoulos
MIMO Systems With Restricted Pre/Post-Coding - Capacity Analysis Based on Coupled Doubly Correlated Wishart Matrices. IEEE Trans. Wirel. Commun. 15 (12) (2016)
Andreas F. Molisch, Vishnu V. Ratnam, Shengqian Han, Zheda Li, Sinh Le Hong Nguyen, Linsheng Li, Katsuyuki Haneda
Hybrid Beamforming for Massive MIMO - A Survey. CoRR (2016)
Vishnu V. Ratnam, Giuseppe Caire, Andreas F. Molisch
Capacity analysis of interlaced clustering in a distributed antenna system. ICC (2015)