adaptive control design for uncertain nonlinear systems with parametric uncertainties
Báo cáo hóa học: " Research Article Stability Analysis and Intermittent Control Synthesis of a Class of Uncertain Nonlinear Systems" doc
... stabilization for a class of uncertain nonlinear systems by means of periodically intermittent control. Several sufficient conditions of exponentialstabilization for this class of uncertain nonlinear systems ... trajectories.Besides these control methods for nonlinear systems mentioned above, intermittent control is a special form of switching control 8. It has been used for a variety ofpurposes in ... model with a predictive control algorithm was proposed for linear systems with input constraints. Recently, incontinuous contro l techniques suc h asimpulsive control 6 and piecewise feedback control...
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báo cáo hóa học: " Sign-changing solutions for some nonlinear problems with strong resonance" pot
... H+=0,thenweconsidercj for j ≥ 2. As per the above arguments,J(0) < c0≤ c2≤ c3≤···≤ cdim H−≤ c∞and if c := cj= = cj+l for 2 ≤ j ≤ j + l ≤dim H- with l ≥ 1, then i(Kc∩ S) ≥ l +1≥ 2.Therefore, ... 2011References1. Bartolo, P, Benci, V, Fortunato, D: Abstract critical point theorems and applications to some nonlinear problems with strong resonance at infinity. Nonlinear Anal. 7, 981–1012 (1983). ... ciritical point and applications to nonlinear differentialequations with resonace. Houson J Math. 25, 563–582 (1999)4. Molle, R, Passaseo, D: Nonlinear elliptic equations with large supercritical exponents....
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Báo cáo hóa học: " Low complexity antenna selection for V-BLAST systems with OSIC detection" docx
... performance for the MIMO systems with a sma ll number of antennas. In the sys-tems with a large number of antennas, we can achieveeven higher complexity reduction without significantperformance ... increaseddiversity.In Figures 3 and 4, the performance of MIMO systems with larger number of antennas are c ompared. Almostthe same relative performance tendency is obtained. Theperformance of the ZF-OSIC receiver ... resultsMonte Carlo simulations are performed for a wirelesssystem with multiple antennas to evaluate the perfor-mance of the proposed selection criterion. For the sakeof simplicity, we consider...
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Báo cáo sinh học: " Research Article Iterative Frequency-Domain Channel Estimation and Equalization for Ultra-Wideband Systems with Short Cyclic Prefix" pot
... possible for the performance of the proposedreceiver for different channels. In addition, the AWGN orthe matched filter bound and the BER performance of theproposed receiver for the CM1 channel with ... ConclusionAniterativeFDreceiverispresentedtocombatwiththedeteriorating effects of using short CP for IR UB systems. An IBI estimation and cancellation scheme that can be usedboth with an FD channel estimator and with an FD MMSEequalizer ... proposed system under parametric uncertainties suchas the synchronization errors, channel estimation errors ,and as well as the derivation of analytical performancebounds for the channel estimation...
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Báo cáo hóa học: "Research Article Advanced Receiver Design for Quadrature OFDMA Systems" doc
... Q-OFDMA systems with smaller P have better BER performance; while with SNRincreasing, Q-OFDMA systems with larger P will becomesuperior. The exact SNR point where one system starts tooutperform ... iterationsFigure 7: BER performance comparison between Q-OFDMA systems with different receivers in Wimax channel model, with 64-QAM modulation.conjunction with channel estimation for Q-OFDMA systems is proposed ... Q-OFDMA systems with turbo receiver, P should bechosen carefully within system constraints according to thecomplexity/performance tradeoff.4. SimulationsIn this section, we present the BER performance...
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Báo cáo hóa học: " Research Article Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support" pdf
... milliseconds for TSPS and PFS, and 15 milliseconds for the b2PFS. Furthermore, the packet loss rate for each schemeis 0% for the TSPS, 1.6·10−3% for the PFS, and 1.6 · 10−4% for the b2PFS. ... packets(P(τi,p<τ)) (see [17] for more information on themeasurement procedure). The allocation algorithm followsthe one proposed in Section 3 with Pburst={10}. For thePFS and b2PFS scheduling ... using each prioritization functionis 275 milliseconds for TSPS, 535 milliseconds for PFS,and 530 milliseconds for the b2PFS. Nevertheless, for theTSPS scheduler the improvement due to the urgency...
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Báo cáo hóa học: " Research Article Cross-Layer Admission Control Policy for CDMA Beamforming Systems" docx
... admis-sion control in power-controlled mobile systems, ” IEEE/ACMTransactions on Networking, vol. 5, no. 2, pp. 255–265, 1997.[2] Y. Bao and A. S. Sethi, “Performance-driven adaptive admis-sion control ... classesRiData rate for packet ipiTransmitted power for packet iB BandwidthGiLink gain for packet iaiArray response vector for packet iλjArrival rate for class jμjDeparture rate for class ... investi-gate the performance for Lj= 0, 1, and 2, respectively. Theresults for large Ljcan be extended straightforwardly. It is ob-served that in a low PER region, for example, ρj≤ 0.01, with an...
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Báo cáo sinh học: " Research Article Robust Stabilization of Fractional-Order Systems with Interval Uncertainties via Fractional-Order Controllers" potx
... Clearly, for closed-loop control systems, there are foursituations. They are IO integer order plant with IO controller, IO plant with FO fractionalorder controller, FO plant with IO controller, ... plant with FO controller. In thispaper, we focus on using FO controllers for unstable FO systems and we propose a simplefractional-order controller to control of fractional-order interval systems. ... systems with interval uncertainties via fractional-order controllers has not beenconsidered yet. Therefore, in this paper we propose a fractional-order controller to stabilizeunstable and uncertain...
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QUASILINEAR CONTROL: Performance Analysis and Design of Feedback Systems with Nonlinear Sensors and Actuators pot
... in LPNI Systems 1145 Design of Reference Tracking Controllers for LPNI Systems 1346 Design of Disturbance Rejection Controllers for LPNI Systems 1677 Performance Recovery in LPNI Systems 2048 ... Tracking with Nonlinear Actuator 312.2.3 Disturbance Rejection with Nonlinear Actuator 362.2.4 Reference Tracking and Disturbance Rejection with Nonlinear Sensor 372.2.5 Closed Loop LPNI Systems with ... foundation of all methods for analysisand design on linear systems, including the indirect Lyapunov method. For moreinformation see the following:[1.61] M. Vidyasagar, Nonlinear Systems Analysis,...
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Báo cáo hóa học: "Research Article Neural Network Adaptive Control for Discrete-Time Nonlinear Nonnegative Dynamical Systems" ppt
... time and the control signal versus time.5. Neuroadaptive control for discrete-time nonlinear nonnegative uncertain systems with nonnegative control As discussed in the introduction, control source ... Neuroadaptive control for discrete-time nonlinear nonnegative uncertain systems In this section, we consider the problem of characterizing neuroadaptive feedback control laws for discrete-time nonlinear ... nonnegative systems with nonnegative control inputs. In general, unlike linearnonnegative systems with asymptotically stable plant dynamics, a given set point xe∈ Rn for a discrete-time nonlinear...
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channel adaptive technologies and cross layer designs for wireless systems with multiple antennas
... OFDMA/MISO Systems 39010.3 Cross-Layer Scheduling Design for DS-CDMA/MISO andOFDMA/MISO Systems 39710.3.1 Cross-Layer Design for DS-CDMA/MISO Systems 39810.3.2 Cross-Layer Design for OFDMA/MISO Systems ... PREFACE Adaptive channel encoder Adaptive beamformingTransmitter with nTantennas and full feedback Adaptive channel encoder Adaptive power control Adaptive power control ......nTtransmitantennasm ... Design for MIMO Channels with Imperfect CSIR 2075.4 Summary 211Chapter 6 Cross-Layer Scheduling for Multiuser Systems with Multiple Antennas 2156.1 Overview 2156.2 Multiuser System Performance...
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