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Elyes Balti Ph.D. Electrical Engineering

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Publications

selected publications

Research

research overview

  • • Team: Wireless Networking and Communications Group (WNCG).
    • Full-duplex MIMO mmWave frequency selective channels.
    • Analog and hybrid beamforming designs.
    • Self-interference cancellation techniques.
    • Application of full-duplex relay channel.
    • Dealing with narrowband channel impairments: symbol and frame synchronization, frequency offset and channel estimation.
    • Wideband channels with SC-FDE and channel estimation.
    • Joint carrier frequency offset estimation and synchronization.
    • OFDM and channel estimation
    • Two-stages synchronization in ODFM systems (STF and CEF) and channel estimation.
    • Link adaptation through feedback: adaptive modulation, power control, and ARQ.
    • Multiuser communications: multiuser channel, CDMA and spread spectrum, multiuser fading channels, OFDMA and SC-FDMA, multiuser MIMO.
    • Network-level communication models: Wyner model, square grid model and SINR/SIR for downlink cellular, frequency reuse, uplink SIR for the square grid model and power control, uplink CDMA cellular capacity vs TDMA.
    • Random spatial models for decentralized (Ad Hoc or Wifi-like) networks: ad hoc network, poisson point processes, interference models for network based on random node locations, outage probability, and transmission capacity.
    • Analyzed the impacts of the hardware impairments, path loss, fading, pointing error, shadowing and co-channel interference on the performance of mixed RF/FSO relaying systems.
    • Analyzed the key performance metrics: end-to-end outage probability, bit/symbol error probability, and ergodic capacity.
    • Shannon capacity, data compression, channel coding, capacity region of achievable rates.
    • Capacity and coding for MIMO channels.
    • MIMO Millimeter Wave and FSO Cooperative Relaying Networks.
    • Transmit and receive diversity techniques.
    • Poisson cellular network modeling and stochastic geometry.
    • Develop a 5G rate map for vehicular cellular network.
    • Physical layer: analog and hybrid beamforming architectures.
    • DFT codebook exhaustive search approach based beamforming.
    • Consider the multiuser MIMO scenario and the achievable rate scaling with the number of users and the deployment and density of the base stations.
    • Study the effects of the spatial streams, the number of RF chains, the bases stations heights, and the dynamic blockage on the rate maps.
    • Deal with the symbol/frame synchronization, frequency offset and channel estimation.
    • Develop an analytical cellular system model using stochastic geometry and compare the outcomes with the simulated results.
    • Tools: Wireless Insite Ray Tracing, Matlab.

Teaching

teaching overview

  • • Builder and grader of ECE-351 Signals and Systems. 
    • Course Outline: Discrete Convolution, System Step Response using Convolution, Step andImpulse Response of RLC Band-pass Filter, Block Diagrams and System Stability, FourierSeries Approximation of a Square Wave, Fast Fourier Transforms, Frequency Response, Z-transform Operations, Filter Design.

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  • Elyes Balti