نتایج جستجو برای: nonlinear multi input multi output mimo systems

تعداد نتایج: 1986824  

2017
Zeliang Wang André Sandmann John G. McWhirter Andreas Ahrens

Polynomial singular value decomposition (PSVD) plays a very important role in broadband multiple-input multiple-output (MIMO) systems. One of its applications lies in the decoupling of MIMO convolutive mixing channel matrix in order to recover the transmitted signals corrupted by the channel interference (CI) at the receiver. In this paper, a novel algorithm, known as multiple shift second orde...

2007
Adam L. Anderson James R. Zeidler Michael A. Jensen

Recent work has demonstrated that in multi-user systems employing multiple-input multiple-output (MIMO) technology, nonlinear dirty-paper coding (DPC) techniques using exact channel state information (CSI) at the transmitter maximize the broadcast channel sum capacity. Similarly, if the precoding is restricted to linear processing, the capacity under this constraint is maximized using a regular...

2012
Yifei WANG

Abstract In order to fulfill the rapid increasing demands of the broadband multimedia and wireless communication, the Multi-input multi-output (MIMO) technique serving as one of the key technologies of the physical layer, have drawn a lot of attention in the past few years. Multi-user multiple-input multiple-output (MU-MIMO) wireless communication system has rapidly gained in popularity over th...

Journal: :Expert Syst. Appl. 2011
Chia-Nan Ko

This paper presents a robust approach to identify multi-input multi-output (MIMO) systems. Integrating support vector regression (SVR) and annealing dynamical learning algorithm (ADLA), the proposed method is adopted to optimize a radial basis function network (RBFN) for identification of MIMO systems. In the system identification, first, SVR is adopted to determine the number of hidden layer n...

Journal: :CoRR 2010
Zengmao Chen Sergiy A. Vorobyov Cheng-Xiang Wang John S. Thompson

In this paper, the problem of rate control in multi-user multiple-input multiple-output (MIMO) interference systems is formulated as a multicriteria optimization (MCO) problem. The Pareto rate region of the MCO problem is first characterized. It is shown that for the convexity of the Pareto rate region it is sufficient that the interference-plus-noise covariance matrices of multiple users with ...

2009
Daniel Sacristán-Murga Florian Kaltenberger Antonio Pascual-Iserte Ana I. Pérez-Neira

This work studies the performance of our recently proposed differential feedback scheme for multi-input-multi-output (MIMO) communication systems using real channel measurement data. The algorithm is applied to the channel correlation matrix exploiting geodesic curves and the intrinsic geometry of positive definite Hermitian matrices. The performance of this and a conventional non-differential ...

2015
Himanshu Khanna

Multi Input Multi Output (MIMO) communication is a proven technique to increase the throughput, diversity gain and increase the energy gain by reducing the energy consumption of the wireless network. Space time diversity used in MIMO systems is a technique to mitigate multipath fading. The same information is transmitted over multiple channels that fade independently. So, space time diversity i...

2013
Daniele Astolfi Alberto Isidori Lorenzo Marconi Laurent Praly

The paper deals with the problem of output regulation for the class of multiinput multi-output square nonlinear systems satisfying a minimum-phase assumption and a “positivity” condition on the high-frequency gain matrix. By following a design paradigm proposed in [12] for single-input single-output nonlinear systems, it is shown how an internal model-based controller can be obtained, whose dim...

2014
C. Selvakumar

In process multi-input multi-output (MIMO) systems are observed that are dominated by interactions between input and outputs. Process decouplers are synthesized to reduce these interactions before controller design. In this work analytical expressions for closed-loop interactive transfer functions are found and interaction reducers (IR) are designed (as process decouplers) for closed-loop contr...

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