• 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.
• 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.