The need to achieve high data rates in modern telecommunication systems, such as 5G standard, motivates the study and development of large antenna and multiple-input multiple-output (MIMO) systems. This study introduces a large antenna-order design of MIMO quasi-orthogonal space-time block code (QO-STBC) system that achieves better signal-to-noise ratio (SNR) and bit-error ratio (BER) performan...

Submitted: Jul 9, 2013; Accepted: Aug 17, 2013; Published: Oct 3, 2013 Abstract: This paper proposes a new type of PID controller. The desired multi inputmulti -output (MIMO) nonlinear system behavior is described by a set of Takagi-Sugeno (T-S) model. However, due to the complexity of the real processes, obtaining a high quality control with a short settle time, a periodical step response and ...

This thesis provides an in-depth analysis of a previously introduced noncoherent ultrawideband (UWB) receiver that uses a parallel autocorrelation frontend to separate a transmitted multichannel signal. The frontend calculates samples of the autocorrelation function of the received signal. Despite this nonlinear operation, a linear multiple-input multiple-output (MIMO) model can be found for th...

Dear Editor, In this letter, a novel adaptive control design problem for uncertain nonlinear multi-input-multi-output (MIMO) systems with time-varying full state constraints is proposed, where the considered consist of various subsystems, and states each subsystem are interconnected tightly. It universally acknowledged that in existing researches constraints, system constraint bounds always con...

This article presents a fuzzy robust Mixed - Sensitivity Gain - Scheduled H controller based on the Loop -Shaping methodology for a class of MIMO uncertain nonlinear Time - Varying systems. In order to design this controller, the nonlinear parameter - dependent plant is first modeled as a set of linear subsystems by Takagi and Sugeno’s (T - S) fuzzy approach. Both Loop - Shaping methodology and...

Abstract A Heating, Ventilating and Air Conditioning (HVAC) system is a nonlinear multi-input multi-output (MIMO) system. This system is very difficult to control the temperature and the humidity ratio of a thermal space because of complex nonlinear characteristics. This paper proposes an adaptive fuzzy output feedback control based on observer for the nonlinear HVAC system. The nonlinear HVAC ...