Optimal Tracking Performance of MIMO Discrete-Time Systems with Network Parameters

The optimal regulation properties of multi-input and multioutput (MIMO) discrete-time networked control systems (NCSs), over additive white Gaussian noise (AWGN) fading channels, based on state space representation, are investigated. The average performance index is introduced. Moreover, the regulation performance is measured by the control energy and the error energy of the system, and fundamental limitations are obtained. Two kinds of network parameters, fading and the additive white Gaussian noise, are considered. The best attainable regulation performance limitations can be obtained by the limiting steady state solution of the corresponding algebraic Riccati equation (ARE). The simulation results are given to demonstrate the main results of the theoretical development.

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On the capacity-achieving distribution of the discrete-time non-coherent additive white Gaussian noise channel

Proceedings IEEE International Symposium on Information Theory, ◽

10.1109/isit.2002.1023437 ◽

2003 ◽

Cited By ~ 16

Author(s):

M. Katz ◽

S. Shamai

Keyword(s):

Discrete Time ◽

Gaussian Noise ◽

Additive White Gaussian Noise ◽

White Gaussian Noise

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Encrypted message transmission in a QO-STBC encoded MISO wireless Communication system under implementation of low complexity ML decoding algorithm

INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY ◽

10.24297/ijct.v2i1.2617 ◽

2012 ◽

Vol 2 (2) ◽

pp. 53-58

Author(s):

Shaikh Enayet Ullah ◽

Md. Golam Rashed ◽

Most. Farjana Sharmin

Keyword(s):

Fading Channels ◽

Gaussian Noise ◽

Communication System ◽

Channel Coding ◽

Signal To Noise Ratio ◽

Additive White Gaussian Noise ◽

Text Message ◽

Low Complexity ◽

White Gaussian Noise ◽

Message Transmission

In this paper, we made a comprehensive BER simulation study of a quasi- orthogonal space time block encoded (QO-STBC) multiple-input single output(MISO) system. The communication system under investigation has incorporated four digital modulations (QPSK, QAM, 16PSK and 16QAM) over an Additative White Gaussian Noise (AWGN) and Raleigh fading channels for three transmit and one receive antennas. In its FEC channel coding section, three schemes such as Cyclic, Reed-Solomon and Â½-rated convolutionally encoding have been used. Under implementation of merely low complexity ML decoding based channel estimation and RSA cryptographic encoding /decoding algorithms, it is observable from conducted simulation test on encrypted text message transmission that the communication system with QAM digital modulation and Â½-rated convolutionally encoding techniques is highly effective to combat inherent interferences under Raleigh fading and additive white Gaussian noise (AWGN) channels. It is also noticeable from the study that the retrieving performance of the communication system degrades with the lowering of the signal to noise ratio (SNR) and increasing in order of modulation.

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