Faiz Rasool

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IEEE has introduced the 802.15.4 standard for a low rate, low power, low complexity and short range Wireless Personal Area Network (WPAN) in 2003. The basic access mechanism used by the standard is the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA). It has been noted that there is a problem of low throughput for short superframe duration(More)
Quantization effects are inevitable in networked control systems (NCSs). These quantization effects can be reduced by increasing the number of quantization levels. However, increasing the number of quantization levels may lead to network congestion, (i.e., the network needs to transfer more information). In this paper, we investigate the problem of(More)
In this paper a stability criterion and robust H<inf>&#x221E;</inf> mode delay dependent quantised dynamic output feedback controller design problem for discrete time systems with random communication delays, packet dropouts and quantisation errors are investigated. Random communication delays from sensor to controller network are modelled using a finite(More)
In this paper we present a novel optimization scheme based on quadratic programming (QP) for solving Maximum Likelihood Decoding (MLD) problem in Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) signal detection systems. Though the MLD method gives the most optimum mathematical solution for detecting multiple signals(More)
Quantizers with coarser quantization densities are helpful in reducing network congestion. In this paper, we investigate the problem of designing a robust H<inf>&#x221E;</inf> output feedback controller for discrete-time networked systems with an adaptive quantization density or limited information. A Markov process is used to model the randomness of the(More)
This paper investigates the problem of designing a nonlinear feedback controller for a class of polynomial discrete-time systems with norm-bounded uncertainties. The objective of a controller design is to achieve robust stabilization and a prescribed level of H<sub>&#x221E;</sub> performance simultaneously. In general, designing a controller for polynomial(More)
This paper is concerned with the stability and stabilizability problems of networked control systems(NCSs) with multiple quantizers. More precisely, the system and controller outputs are quantized at different quantization levels and experiencing different network-induced delays. This configuration is more natural in NCSs. Network-induced delays and packet(More)
This paper investigates the problem of robust filter design for a class of uncertain nonlinear networked control systems (NCSs) with random communication network-induced delays and data packet dropouts. The Markov process is used to model these random network-induced effects. Based on the Takaig-Sugeno fuzzy model and Lyapunov-Razumikhin method, a fuzzy(More)
Quantization effects are inevitable in networked control systems (NCSs). These quantization effects can be reduced by increasing the number of quantization levels. However, increasing the number of quantization levels may lead to network congestion, (i.e., the network needs to transfer more information than its capacity). In this paper, we investigate the(More)
This paper investigates a robust H<sub>&#x221E;</sub> dynamic output feedback controller for networked control systems (NCSs) with a simple congestion control scheme. This scheme enables the NCSs design to enjoy the advantages of both time-triggered and event-triggered systems. The proposed scheme compares the current measurement with the last transmitted(More)