In this paper,a new design algorithm for complex-valued paraunitary filter banks with conjugate symmetry is proposed which leads the analysis and synthesis filters to have linear-phase frequency *** lattice structures...
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In this paper,a new design algorithm for complex-valued paraunitary filter banks with conjugate symmetry is proposed which leads the analysis and synthesis filters to have linear-phase frequency *** lattice structures proposed in this paper can be treated as a generalization of the factorization of real-valued linearphase filter ***-imaginary filter banks can be designed as a special case in the new algorithm. Implementation algorithms and design results of complexvalued filter banks with 8 and 16 channels are included to verify the lattice structures in the *** filter banks demonstrate linear-phase characteristics in both time and frequency domain.
The multilevel simulation is one of the major study ways at the present circuit *** first,the different layer's circuit model is obtained for finishing the multilevel simulation. Based upon the signal flow graph a...
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ISBN:
(纸本)0780362535
The multilevel simulation is one of the major study ways at the present circuit *** first,the different layer's circuit model is obtained for finishing the multilevel simulation. Based upon the signal flow graph and system identification theorem,this paper presents the model arithmetic for frequency domain behavioral level circuit *** it gives the finishing behavioral level circuit simulation and multilevel simulation system structure and *** the conclusion and next work is given.
This paper studies a particular variant of Generic Programming, called Adaptive Programming (AP).W e explain the approach taken by Adaptive Programming to attain the goals set for Generic Programming. Within the forma...
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Microcontrollers have been playing an important role in the embedded market. However, the designer of microcontroller based systems must deal with different languages and tools in the hardware and software development...
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ISBN:
(纸本)0769505376
Microcontrollers have been playing an important role in the embedded market. However, the designer of microcontroller based systems must deal with different languages and tools in the hardware and software development, despite of their distinct design process. This paper presents a new design strategy to implement embedded applications described uniquely in Java, while maintaining software compatibility throughout the design process. Moreover, the target hardware is a single chip FPGA, taking benefit from their low cost and easy reconfiguration to customize the microcontroller. This papers presents the environment and some results of system synthesis.
A user-friendly,time-saving computer-automated test system for quasi-optical overmoded waveguide frequency multiplier grid array research has been developed,utilizing the graphical programming software Labview and the...
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A user-friendly,time-saving computer-automated test system for quasi-optical overmoded waveguide frequency multiplier grid array research has been developed,utilizing the graphical programming software Labview and the standard interface GPIB(General Purpose Interface Bus).The system measures pulsed and cw power and efficiency by controlling an RF source,gathering data from oscilloscopes,and calculating input and output power levels and efficiencies utilizing calibration *** efficiencies and output powers for frequency tripler and doubler grid arrays have been *** results of output power and efficiency versus input power for a frequency tripler grid array and efficiency versus frequency for a frequency doubler grid array are shown in this paper.
＜正＞Content-based retrieval（CBR） has been considered effective for searching complex multimedia data from the *** multimedia has plentiful connotations,the userdependent content definitions always are arbitrary bu...
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＜正＞Content-based retrieval（CBR） has been considered effective for searching complex multimedia data from the *** multimedia has plentiful connotations,the userdependent content definitions always are arbitrary but insufficient for general *** this paper,a new Attribute-Dispersed Model（ADM） is proposed for general multimedia storage and content-based *** to the proposed model,different attributes of the multimedia object are firstly classified as independent ones and dependent ones,the later will be stored and managed separately,and new attributes or concepts can be easily expanded dynamically in a self-description and reference list（SDRL） scheme. It is expected that the proposed model can be a rational and practical solution for the efficient and effective storage and retrieval of general multimedia information.
Gating is a very important technique of data *** an excellent gate algorithm, which could efficiently decrease the number of extraneous returns fall within the gate,can improve the data association accuracy and decrea...
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Gating is a very important technique of data *** an excellent gate algorithm, which could efficiently decrease the number of extraneous returns fall within the gate,can improve the data association accuracy and decrease the computation ***,A novel tracking gate algorithm is presented in this *** main feature of our method is to estimate the size of gate by calculating the optimal solution of an appraising function of the performance of the data association algorithm.A comparison of our method to classical methods demonstrates that our algorithm is superior to these methods,especially in a heavy clutter and false alarm environment.
In this paper,we present a new optimization based method for designing orthonormal filter banks in wavelet denoising. We formulate the design problem as a nonlinear optimization problem whose objective is to minimize ...
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In this paper,we present a new optimization based method for designing orthonormal filter banks in wavelet denoising. We formulate the design problem as a nonlinear optimization problem whose objective is to minimize the mean squared error(MSE) between the original and the denoised *** contrast to previous methods that design filter banks separately from the other operations in noise suppression,our formulation allows us to search for the filters in the context of a denoising algorithm to minimize *** to the nonlinear nature of the performance metric,the optimization problem is solved by using the simulated annealing global-search *** apply the optimization method to find good filter banks for different training signals corrupted by impulsive noise and select the one that performs best across all training signals to be the final *** experimental results,we show that the filter bank designed by our method reduces the MSE of the best existing filter bank on sixteen benchmark signals contaminated by either impulsive or Gaussian noise.
This paper reports a synthesis system for analog circuits using the concept of over-designed circuits.A library is created with basic over-designed *** system developed will automatically and intelligently explore the...
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This paper reports a synthesis system for analog circuits using the concept of over-designed circuits.A library is created with basic over-designed *** system developed will automatically and intelligently explore the design space of various circuit configurations to produce an output circuit that matches the specification as closely as *** input specifications are defined in terms of the circuit performances that can be simulated. Multiple constraints are allowed in the system.
The wavelength and polarization selective properties of plane arrays consisting of two cylinders per unit periodic cell are studied *** analysis is based on the efficient algorithm for calculating lattice sums and the...
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The wavelength and polarization selective properties of plane arrays consisting of two cylinders per unit periodic cell are studied *** analysis is based on the efficient algorithm for calculating lattice sums and the recursive T-matrix *** cylindrical objects in the unit cell can be dielectric,metallic or mixture of both and different *** numerical examples demonstrate interesting resonance profiles which are different from those of the array of single cylinder.
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