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ORCIDVishnu V. Ratnam
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2020 – today
- 2024
[j13]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. IEEE J. Sel. Areas Commun. 42(9): 2410-2423 (2024)- [j12]Vishnu V. Ratnam, Hao Chen, Hao-Hsuan Chang, Abhishek Sehgal, Charlie Zhang:
Optimal Preprocessing of WiFi CSI for Sensing Applications. IEEE Trans. Wirel. Commun. 23(9): 10820-10833 (2024) - [c11]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: 13096-13100 - [i8]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 abs/2405.12168 (2024) - 2023
- [c10]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: 1-7 - [c9]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: 1-8 - [i7]Vishnu V. Ratnam, Hao Chen, Hao-Hsuan Chang, Abhishek Sehgal, Jianzhong Zhang:
Optimal preprocessing of WiFi CSI for sensing applications. CoRR abs/2307.12126 (2023) - [i6]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 abs/2312.11682 (2023) - 2022
- [j11]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: 73364-73377 (2022) - [j10]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: 88872-88884 (2022) - 2021
- [j9]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: 3278-3290 (2021) - 2020
- [j8]Vishnu V. Ratnam:
Performance of Analog Beamforming Systems With Optimized Phase Noise Compensation. IEEE Trans. Signal Process. 68: 5334-5348 (2020)
2010 – 2019
- 2019
- [j7]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: 111592-111604 (2019) - [j6]Vishnu V. Ratnam, Andreas F. Molisch:
Periodic Analog Channel Estimation Aided Beamforming for Massive MIMO Systems. IEEE Trans. Wirel. Commun. 18(3): 1581-1594 (2019) - [j5]Vishnu V. Ratnam, Andreas F. Molisch:
Continuous Analog Channel Estimation-Aided Beamforming for Massive MIMO Systems. IEEE Trans. Wirel. Commun. 18(12): 5557-5570 (2019) - [c8]Jeongho Jeon, Russell D. Ford, Vishnu V. Ratnam, Joonyoung Cho, Jianzhong Zhang:
Coordinated Spectrum Sharing Framework for beyond 5G Cellular Networks. GLOBECOM 2019: 1-6 - [i5]Vishnu V. Ratnam, Andreas F. Molisch:
Periodic Analog Channel Estimation Aided Beamforming for Massive MIMO Systems. CoRR abs/1901.04078 (2019) - [i4]Vishnu V. Ratnam, Andreas F. Molisch:
Continuous Analog Channel Estimation Aided Beamforming for Massive MIMO Systems. CoRR abs/1901.08763 (2019) - [i3]Vishnu V. Ratnam:
Optimal Reference Signal Design for Phase Noise Compensation in Multi-carrier Massive MIMO Systems. CoRR abs/1909.04259 (2019) - 2018
- [j4]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): 4105-4120 (2018) - [c7]Vishnu V. Ratnam, Andreas F. Molisch:
Multi-Antenna FSR Receivers: Low Complexity, Non-Coherent, Massive Antenna Receivers. GLOBECOM 2018: 1-7 - [c6]Vishnu V. Ratnam, Andreas F. Molisch:
Reference Tone Aided Transmission for Massive MIMO: Analog Beamforming without CSI. ICC 2018: 1-7 - 2017
- [j3]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): 134-141 (2017) - [c5]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: 1-7 - [c4]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: 1-7 - [i2]Vishnu V. Ratnam, Andreas F. Molisch, Ozgun Y. Bursalioglu, Haralabos C. Papadopoulos:
Hybrid Beamforming with Selection for Multi-user Massive MIMO Systems. CoRR abs/1708.00083 (2017) - 2016
- [j2]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): 2629-2641 (2016) - [j1]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): 8537-8550 (2016) - [c3]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: 1-6 - [i1]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 abs/1609.05078 (2016) - 2015
- [c2]Vishnu V. Ratnam, Giuseppe Caire, Andreas F. Molisch:
Capacity analysis of interlaced clustering in a distributed antenna system. ICC 2015: 1727-1732 - 2012
- [c1]Songze Li, Urbashi Mitra, Vishnu V. Ratnam, Ashish Pandharipande:
Jointly cooperative decode-and-forward relaying for secondary spectrum access. CISS 2012: 1-6
Coauthor Index
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