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This paper presents two multivariable nonlinear stabilizers, designed for a single machine infinite bus (SMIB) modeled by a standard ninth-order model. Multivariable feedback linearization (MFBL) and multivariable sliding mode control (MSMC) are proposed to regulate the output voltage and track the reference rotor angle at post-fault conditions. It is the first time that The MSMC method is designed...
Multiuser interference (MUI) and multiple-antenna interference (MAI) are two challenging issues in design of multicarrier code-division multiple-access (MC-CDMA) systems for communication through multiple-input multiple-output (MIMO) channels. In this paper, by utilizing channel information in both transmit and receive sides, we propose two linear joint transmitter-receiver design methods for multiuser...
Multiuser interference (MUI) and multiple-antenna interference (MAI) are two challenging issues in design of multicarrier code-division multiple-access (MC-CDMA) systems for communication through multiple-input multiple-output (MIMO) channels. In this paper, by utilizing channel information in both transmit and receive sides, we propose two linear joint transmitter-receiver design methods for multiuser...
In a MANET, mobile nodes must cooperate to dynamically establish routes using multi-hop wireless links. Some of the main challenges in this area related to routing protocols. These networks do not require any existing infrastructure or central administration. To make MANETs adaptive to different mobility and traffic patterns, this paper proposes a novel routing scheme which is utilized mobile agents...
This paper presents a new technique consisting of an additional passive component and a small capacitor to cancel out the effect of parasitic capacitance, thereby improving high frequency filtering performance. The proposed method is related to strategy that has been exploited for cancelling parasitic capacitance in filter inductors. In this technique an extra winding is wound together with the main...
Multiuser interference (MUI) and co-space interference (CSI) are two challenging issues in design of multicarrier code-division multiple-access (MC-CDMA) systems when multiple antennas are used at both the transmitter and receiver sides (MIMO transmission). On the other hand, in cognitive radio (CR) system, the secondary users that use MC-MCDA technique must deactivate the subcarriers used by the...
In this paper, a new receiver for downlink multicarrier code-division multiple-access (MC-CDMA) system is proposed when the channel between the transmitter and each user is multiple-input multiple-output (MIMO). The structure of the proposed receiver is based on the singular value decomposition (SVD) method. The conventional SVD method is able to eliminate the co-space interference (CSI) in single...
Deregulation in power industry has made the reactive power ancillary service management a critical task to power system operators from both technical and economic perspectives. Reactive power management in power systems is a complex combinatorial optimization problem involving nonlinear functions with multiple local minima and nonlinear constraints. This paper proposes a practical market-based reactive...
The autonomous character of mobile ad-hoc networks (MANET) poses significant challenges on network communications. Some of the main challenges in this area related to routing protocols. To make MANETs adaptive to different mobility and traffic patterns, this paper proposes a novel routing scheme which is utilized cross layer design and attempts to develop DSR routing protocol in MANETs with simple...
A mobile ad-hoc network (MANET) is a collection of wireless mobile nodes forming a temporary Network. These networks do not require any existing infrastructure or central administration. To make MANETs adaptive to different mobility and traffic patterns, this paper proposes a novel routing scheme which is utilized mobile agents and attempts to develop DSR routing protocol in MANETs with simple node-level...
Singular value decomposition (SVD) is a useful technique to mitigate co-space interference (CSI) in multiple input multiple output (MIMO) systems employing orthogonal frequency division multiplexing (OFDM) scheme. The SVD based frequency-domain broadband beamforming (FBBF) approach uses the beamforming matrices in both transmitter and receiver sides for each subchannel matrix. However, when the MIMO-...
Insertion of DGs in distribution system provides many potential benefits such as peak shaving, improvement of power quality and reliability, increased in efficiency and improved environmental performance. However, it is followed by some special problems. Perhaps, the most important problem in using DGs in distribution systems that may disturb system protection is islanding. Islanding operations of...
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