Projects
Graduate research: Improving MIMO communication with advances from circuits and antennas
MIMO communication theory has advanced separately from progress in circuits and antennas. The increasing scale of antennas and bandwidth, though, now requires developing a physically consistent communication theory. Such a theory should better incorporate RF hardware and allow more accurate prediction of communication data rates and making energy efficiency tradeoffs. My research focuses on bridging the gap between conventional communication theory and antennas/EM/circuit theory.
Project 1: Achievable rate analysis under Bode-Fano wideband matching constraints
1) Proposed a general bound on the MISO achievable rate over all linear and passive matching networks
2) Developed a practical approach to approximate the achievable rate bound using ADS circuit design software
Conference paper: Achievable rate of a SISO system under wideband matching network constraints
Journal paper: A generalization of the achievable rate of a MISO system using Bode-Fano wideband matching theory
Poster presented at CWC event and San Diego wireless summit in 2024
Project 2: Reconfigurable parasitic array beamforming
1) Developing optimization methods for configuring parasitic antenna array using a multi-port circuit theory approach
Project 3: Frequency-selective beamforming and beam training with dynamic metasurface antenna
1) Developing optimization methods for configuring dynamic metasurface antennas for wideband communication
Project 4: Analysis of near-field and wideband communication systems
1) Analyzed beamforming gain for a general near-field and wideband channel
2) Proposed a frequency-selective distance metric to determine the far-field to near-field boundary for a wideband system
3) Uncovered a fundamental tradeoff between the aperture and bandwidth
Journal paper: A wideband generalization of the near-field region for extremely large phased-arrays
Project 5: Nonuniform true time delay precoding in wideband MISO systems
1) Proposed delay design for true-time-delay beamforming architectures for a general channel with multi-path and near-field effects
Conference paper: Nonuniform true time delay precoding in wideband MISO systems
Poster presented in the Asilomar conference in 2022
Undergraduate research
Project 1: Intelligent Reflecting Surfaces (IRS) aided Wireless Communication
1) Analysed Full Duplex Intelligent Reflecting Surface aided wireless communication model with spatially correlated channels and imperfect channel state information
Conference paper: Analysis of Statistical CSI-based Optimized Phase-Shift IRS-aided FD mMIMO System
Journal paper: Spatially-Correlated IRS-Aided Multi-User FD mMIMO Systems: Analysis And Optimization
Project 2: Heterogeneous Cellular Networks analysis using stochastic geometry
1) Derived exact expressions of spectral efficiency using Hamdi’s Lemma approach for a typical user under a K tier Heterogeneous Network model using Poisson Cluster Process and Poisson Point Process under a max-power association scheme
Conference paper: Spectral Efficiency in Poisson Cluster Based HetNets with Users-Basestations Correlation