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linear time-varying channels

Time-Varying FIR Equalization for MIMO Transmission over Doubly Selective Channels

Time-Varying FIR Equalization for MIMO Transmission over Doubly Selective Channels

... to time-varying frequency-selective channels is investigated in ...selective channels, ZF and MMSE time-varying FIR equalization techniques were proposed in ...block ...

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Code-Aided Estimation and Detection on Time-Varying Correlated Mimo Channels: A Factor Graph Approach

Code-Aided Estimation and Detection on Time-Varying Correlated Mimo Channels: A Factor Graph Approach

... Several years ago, it has been recognized that Kalman filtering can be interpreted as a message-passing algorithm (the sum-product (SP) algorithm) on a factor graph [13]. Ever since, the SP algorithm has been applied to ...

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Neuro Fuzzy System Based Adaptive Equaliser in Mobile Cellular Channels

Neuro Fuzzy System Based Adaptive Equaliser in Mobile Cellular Channels

... Cellular Channels are subjected to multi-path reflections by virtue of the environment they are ...The time-dispersive nature of the channel causes Inter symbol Interference ...mobile channels are ...

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Embedding Based Sliding Mode Control for Linear Time Varying Systems

Embedding Based Sliding Mode Control for Linear Time Varying Systems

... On the other hand, many methods based on sliding mode and output feedback control schemes have been also proposed for robust stabilisation of uncertain sys- tems [24,25]. El-Khazali and DeCarlo [25] have de- signed ...

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Model-based approach to reliable information transfer over time-varying communication channels

Model-based approach to reliable information transfer over time-varying communication channels

... of linear difference (differential) state ...channel time variations are caused by moving objects in the environment (the Doppler effect), the channel model parameters are physically linked to the ...

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Pilot Placement for Time Varying MIMO OFDM Channels with Virtual Subcarriers

Pilot Placement for Time Varying MIMO OFDM Channels with Virtual Subcarriers

... lows: time-division multiplexing, frequency-division multiplexing, code-division multiplexing in the frequency domain and in the time domain, and different combina- tions of ...

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Frequency-Shift Zero-Forcing Time-Varying Equalization for Doubly Selective SIMO Channels

Frequency-Shift Zero-Forcing Time-Varying Equalization for Doubly Selective SIMO Channels

... over time- and frequency-selective, so-called doubly selective, channels requires an accurate description of the time-varying be- haviour of the transmission ...(FIR) linear ...

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Enhancement in Channel Equalization Using Particle Swarm Optimization Techniques

Enhancement in Channel Equalization Using Particle Swarm Optimization Techniques

... posed time varying PSO algorithms, PSO-TVW2, PSO-TVW3 and MP-PSO improve the convergence speed much better than other existing variants in linear and nonlinear ...

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Identifying time-varying channels with aid of pilots for MIMO-OFDM

Identifying time-varying channels with aid of pilots for MIMO-OFDM

... is time varying due to Doppler effects and can be approximated by an oversampled complex exponential basis expansion ...best linear unbiased estimator (BLUE) to estimate the channel with the aid of ...

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Linear and Nonlinear Time Domain Block Equalizers  on MIMO Frequency Selective Channels

Linear and Nonlinear Time Domain Block Equalizers on MIMO Frequency Selective Channels

... the time domain block linear and nonlinear equalizers for the signal separation and equalization of single carrier transmission on quasi- static frequency selective MIMO, SIMO, and SISO chan- ...proposed ...

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Multi segmental OFDM signals equalization with piecewise linear channel model over rapidly time varying channels

Multi segmental OFDM signals equalization with piecewise linear channel model over rapidly time varying channels

... rapidly time-varying channels, the performance of (orthogonal frequency division multiplexing) OFDM systems with the conventional one tap equalizer will be significantly ...piecewise linear ...

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Dynamic Performance Analysis of Hysteresis Motors by a Linear Time-Varying Model

Dynamic Performance Analysis of Hysteresis Motors by a Linear Time-Varying Model

... Abstract: Hysteresis motors are self starting brushless synchronous motors which are being used widely due to their interesting features. Accurate modeling of the motors is crucial to successful investigating the dynamic ...

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State bounding estimation for a linear continuous time singular system with time varying delay

State bounding estimation for a linear continuous time singular system with time varying delay

... Remark 2 Lemma 2.4 in this paper provides a basic tool for the problem of state bounding not only containing the state convergence within a ball but also including the reachable set bounding for a continuous-time ...

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Restricted structure non-linear generalized minimum variance control of a 2-link robot arm

Restricted structure non-linear generalized minimum variance control of a 2-link robot arm

... algorithm basically uses the same type of system with that of the NGMV but restricted to the structure of either a general z- transfer function or a PID. The cost function to be minimized also remains the same. The task ...

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A DISCRETE-TIME SLIDING MODE CONTROLLER WITH MODIFIED FUNCTION FOR LINEAR TIME- VARYING SYSTEMS

A DISCRETE-TIME SLIDING MODE CONTROLLER WITH MODIFIED FUNCTION FOR LINEAR TIME- VARYING SYSTEMS

... discrete time sliding mode controller with modified function for Linear Time-Varying Systems with different disturbances is proposed and verified by simulations that the new control is able to ...

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Reduced Order Estimation of Time Varying Wireless Channels in Real Life Scattering Environment

Reduced Order Estimation of Time Varying Wireless Channels in Real Life Scattering Environment

... last condition is often satisfied as the usual number of pilots in use for STTD schemes with estimation does not exceed more than three pilots for optimality reasons. More- over, it has been mentioned at the end of Sec. ...

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Linear Impulsive Periodic System with Time Varying Generating Operators on Banach Space

Linear Impulsive Periodic System with Time Varying Generating Operators on Banach Space

... homogeneous linear impulsive periodic system with time-varying generating operators and nonhomogeneous linear impulsive periodic system with time-varying generating op- ...same ...

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Fast time-varying linear filters for suppression of baseline drift in electrocardiographic signals

Fast time-varying linear filters for suppression of baseline drift in electrocardiographic signals

... a time-varying filter considers the fact that the period length does not change suddenly when a new QRS complex is ...each time instant, linear interpolation is applied in between neighbour- ...

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Response of linear, viscous damped systems to excitations having time varying frequency

Response of linear, viscous damped systems to excitations having time varying frequency

... ABSTRACT The response of linear, viscous damped systems to excitations having time-varying frequency is the subject of exact and approximate analyses, which are supplemented by an analog[r] ...

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Importance sampling methodologies for simulation of communication systems with time-varying channels and adaptive equalizers

Importance sampling methodologies for simulation of communication systems with time-varying channels and adaptive equalizers

... In addition to the TS technique, we also present a statistically biased, but simpler tech- nique for using IS with adaptive equalizers which is based on the independence assumption betwe[r] ...

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