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Advanced Search Results For "Jagannatham, Aditya K."

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 "Jagannatham, Aditya K."
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Hybrid Transceiver Design and Optimal Power Allocation for the Cognitive mmWave Multiuser MIMO Downlink Relying on Limited Feedback

Publication Type: Academic Journal

Source(s): IEEE Open Journal of Vehicular Technology, Vol 4, Pp 241-256 (2023)

Abstract: A hybrid transceiver architecture is conceived for a cognitive radio (CR) aided millimeter wave (mmWave) multiuser (MU) multiple-input multiple-output (MIMO) downlink system relying on multiple radio frequency (RF) chains both at the CR base station (C...

Sparse Parameter Estimation and Imaging in mmWave MIMO Radar Systems With Multiple Stationary and Mobile Targets

Publication Type: Academic Journal

Source(s): IEEE Access, Vol 10, Pp 132836-132852 (2022)

Abstract: This work conceives novel target detection and parameter estimation schemes in millimeter-wave (mmWave) multiple-input multiple-output (MIMO) radar (mMR) systems for both stationary and mobile targets/radar platform. Initially, the orthogonal matching ...

Dictionary-Learning (DL)-Based Sparse CSI Estimation in Multiuser Terahertz (THz) Hybrid MIMO Systems Under Hardware Impairments and Beam-Squint Effect

Publication Type: Academic Journal

Source(s): IEEE Access, Vol 10, Pp 113699-113714 (2022)

Abstract: This work conceives dictionary-learning (DL)-based sparse channel estimation schemes for multi-user Terahertz (THz) hybrid MIMO systems incorporating also non-idealities such as hardware impairments and beam-squint effect. Due to the presence of large ...

Optimal Bit Allocation-Based Hybrid Precoder-Combiner Design Techniques for mmWave MIMO-OFDM Systems

Publication Type: Academic Journal

Source(s): IEEE Access, Vol 9, Pp 54109-54125 (2021)

Abstract: This work conceives techniques for the design of hybrid precoders/combiners for optimal bit allocation in frequency selective millimeter wave (mmWave) multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems, towa...

Optimal Pilot Design and Error Rate Analysis of Block Transmission Systems in the Presence of Channel State Information (CSI) Estimation Error

Publication Type: Academic Journal

Source(s): IEEE Access, Vol 8, Pp 112130-112144 (2020)

Abstract: This work proposes novel techniques toward the design of optimal pilot sequences to perform channel estimation in block transmission systems over wideband frequency selective wireless fading channels. The framework developed is based on minimization of...

Hierarchical Trellis Based Decoder for Total Variation Sequence Detection (TVSD) in Space-Time Trellis Coded (STTC) Wireless Image/Video Communication

Publication Type: Academic Journal

Source(s): IEEE Access, Vol 8, Pp 79383-79396 (2020)

Abstract: This paper proposes a robust reconstruction scheme for image/ video transmission in space-time trellis coding (STTC) based MIMO wireless multimedia sensor networks (WMSN). The information bits of the image/ video stream are modulated using STTC prior t...

Outage Probability Analysis for NOMA Downlink and Uplink Communication Systems With Generalized Fading Channels

Publication Type: Academic Journal

Source(s): IEEE Access, Vol 8, Pp 220461-220481 (2020)

Abstract: This work considers multiple user power-domain non-orthogonal multiple access (NOMA)based downlink (DL) and uplink (UL) communication systems with potentially dissimilar fading links for all the users that can follow one of several possible distributio...

Total Variation Based Joint Detection and State Estimation for Wireless Communication in Smart Grids

Publication Type: Academic Journal

Source(s): IEEE Access, Vol 7, Pp 31598-31614 (2019)

Abstract: A novel total variation (TV) framework is conceived for joint detection and dynamic state estimation (JDSE) for wireless transmission from the measurement devices to the control center in a smart grid. The proposed scheme employs a TV regularization ba...

Robust Distributed Hybrid Beamforming in Coordinated Multi-User Multi-Cell mmWave MIMO Systems Relying on Imperfect CSI

Publication Type: Periodical

Source(s): IEEE Transactions on Communications; December 2022, Vol. 70 Issue: 12 p8123-8137, 15p

Abstract: Novel hybrid beamformer designs are conceived for a multi-user multi-cell (MUMC) mmWave system relying on base station (BS) coordination and total transmit power minimization subject to realistic signal-to-interference-plus-noise ratio (SINR) constrain...

OTFS Transceiver Design and Sparse Doubly-Selective CSI Estimation in Analog and Hybrid Beamforming Aided mmWave MIMO Systems

Publication Type: Periodical

Source(s): IEEE Transactions on Wireless Communications; December 2022, Vol. 21 Issue: 12 p10902-10917, 16p

Abstract: Orthogonal time frequency space (OTFS) waveform based millimeter wave (mmWave) MIMO systems are capable of achieving high data rates in high-mobility scenarios. Hence, transceivers are designed for both analog beamforming (AB) and hybrid beamforming (H...