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Signals and Systems

Research in this area covers various topics including communications and telecommunications, networking, control systems, optimization, speech processing, and signal processing.

Research in communications and telecommunications is concerned with communications, telecommunications, networking, and information processing principles and their engineering applications. Significant multidisciplinary programs including sensing and radio communication networks exist. Communications research includes satellite, spread spectrum, and digital communications systems. Fast estimation, detection, and optimization algorithms and processing techniques for communications, radar, and VLSI design are studied. Research is also conducted in stochastic modeling of telecommunications engineering systems, switching, architectures, queueing systems, computer communications networks, local-area/metropolitan-area/long-haul communications networks, optical communications networks, packet-radio and cellular radio networks, personal communications systems, multimedia communications, and multiuser resource management using game theory.

Research in networking also includes studies of processor communications and synchronization for parallel and distributed processing in computer and sensor network systems. Several aspects of communications networks and processing systems are thoroughly investigated, including system architectures, protocols, performance modeling and analysis, simulation studies, and analytical optimization. Investigations in information theory involve basic concepts and practices of channel and source coding.

Research in control systems involves studies in estimation, filtering, and identification of dynamic systems, including deterministic and stochastic, linear- and nonlinear-, and finite and infinite-dimensional systems. Topics also include adaptive, distributed, nonlinear, optimal, and robust and hybrid control systems, with applications to autonomous systems, smart structures, light systems, micro-robotics, microelectromechanical systems, and distributed networks.

Research in engineering optimization involves investigations on linear and nonlinear programming, convex optimization and engineering applications, numerical methods, nonconvex programming, and associated network flow and graph problems. Another area of study is stochastic processes, including renewal theory, Markov chains, stochastic dynamic programming, and queueing theory.

Research in signal processing encompasses the techniques, hardware, algorithms, and systems used to process one dimensional and multidimensional sequences of data. Areas of interest include analysis, synthesis, and coding of speech signals, video signal processing, digital filter analysis and design, multirate signal processing, image compression, adaptive filtering, communications signal processing, equalization techniques, synthetic aperture radar remote sensing, signal processing for hearing aids, auditory system modeling, automatic speech recognition, wireless communication, digital signal processor architectures, and the characterization and analysis of three-dimensional time-varying medical image data.

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