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1999 Vol. 21, No. 1
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1999, 21(1): 1-7.
Abstract:
This paper first gives a SCP abstract model, then SCP s overload detection and maximum processing capability are discussed quantitatively. Based upon dynamic adjustment, a new two-level SCP overload control algorithm is proposed. Theoretical analysis...
This paper first gives a SCP abstract model, then SCP s overload detection and maximum processing capability are discussed quantitatively. Based upon dynamic adjustment, a new two-level SCP overload control algorithm is proposed. Theoretical analysis...
1999, 21(1): 8-15.
Abstract:
This paper presents several protocols without receiver collisions for WDM networks with tunable transmitter/tunable receiver architecture. These protocols include the simple non-receiver -collision protocol (called TS), the optimized scheduling (call...
This paper presents several protocols without receiver collisions for WDM networks with tunable transmitter/tunable receiver architecture. These protocols include the simple non-receiver -collision protocol (called TS), the optimized scheduling (call...
1999, 21(1): 16-21.
Abstract:
A single sever queueing system with multiple discrete periodic train arrivals and definite service time, which cames from a worst traffic status in intermediate nodes of ATM networks and nodes where wired ATM networks access wireless ones under CBR t...
A single sever queueing system with multiple discrete periodic train arrivals and definite service time, which cames from a worst traffic status in intermediate nodes of ATM networks and nodes where wired ATM networks access wireless ones under CBR t...
1999, 21(1): 22-29.
Abstract:
The queuing models of three typical implementation schemes of selfhealing function in VP switches for backup-VP selfhealing algorithm are given. Computer simulations are made, and detailed analyses of the effect of implementation schemes of selfheali...
The queuing models of three typical implementation schemes of selfhealing function in VP switches for backup-VP selfhealing algorithm are given. Computer simulations are made, and detailed analyses of the effect of implementation schemes of selfheali...
1999, 21(1): 30-36.
Abstract:
This article deals with the reverse channel of IS-95 based cellular CDMA system. The M-ary OQPSK(Offset Quadrature Phase Shift Keying) modulation process and the RAKE receiver are described. Bit error rate over Nakagami(m) multi-path fading channel i...
This article deals with the reverse channel of IS-95 based cellular CDMA system. The M-ary OQPSK(Offset Quadrature Phase Shift Keying) modulation process and the RAKE receiver are described. Bit error rate over Nakagami(m) multi-path fading channel i...
1999, 21(1): 37-41.
Abstract:
In this paper, the continuous-time systems of the random access channel are analyzed by using the average cycle method. Analytic formulae for mean values of a successful period and a colliding period and an idle period are derived. Also, the upper bo...
In this paper, the continuous-time systems of the random access channel are analyzed by using the average cycle method. Analytic formulae for mean values of a successful period and a colliding period and an idle period are derived. Also, the upper bo...
1999, 21(1): 42-49.
Abstract:
Chaotic system is extremely unstable. Can it be used for measuring signal? This paper proves that it can be either theoretically or experimentally. This measuring method is completely different from one of the linear system. Acconding to the analysis...
Chaotic system is extremely unstable. Can it be used for measuring signal? This paper proves that it can be either theoretically or experimentally. This measuring method is completely different from one of the linear system. Acconding to the analysis...
1999, 21(1): 50-54.
Abstract:
This paper presents a new fuzzy K-nearest neighbor codebook design algorithm of vector quantization, the algorithm can eliminate the effect of initial codebook selection on the quality of clustering, is not trapped in local minimum, has a good conver...
This paper presents a new fuzzy K-nearest neighbor codebook design algorithm of vector quantization, the algorithm can eliminate the effect of initial codebook selection on the quality of clustering, is not trapped in local minimum, has a good conver...
1999, 21(1): 55-59.
Abstract:
In order to implement the symbol-logic-based neural network system, a model of logical neuron is denned in this paper. The logical neuron circuits and all kinds of logic -function circuits have been realized by using current-mode CMOS VLSI implementa...
In order to implement the symbol-logic-based neural network system, a model of logical neuron is denned in this paper. The logical neuron circuits and all kinds of logic -function circuits have been realized by using current-mode CMOS VLSI implementa...
1999, 21(1): 60-65.
Abstract:
Bidirectional associativ memory models with axonal signal transmission delays are two-layer heteroassociative networks. In this paper, existence and uniqueness of periodic solutions are emphatically discussed for BAM with axonal signal transmission d...
Bidirectional associativ memory models with axonal signal transmission delays are two-layer heteroassociative networks. In this paper, existence and uniqueness of periodic solutions are emphatically discussed for BAM with axonal signal transmission d...
1999, 21(1): 66-71.
Abstract:
In this paper, the global asymptotic stability of equilibrium point for asymmetric Hopfield neural networks with time-delay is discussed, and the sufficient conditions for global asymptotic stability of the equilibrium point are obtained. Finally, th...
In this paper, the global asymptotic stability of equilibrium point for asymmetric Hopfield neural networks with time-delay is discussed, and the sufficient conditions for global asymptotic stability of the equilibrium point are obtained. Finally, th...
1999, 21(1): 72-77.
Abstract:
In this paper, a method, which uses the new hybrid Pi-Sigma neural network to realize the Sugeno-Takagi fuzzy system, is presented. And then it is used for modelling the data association computation problem. Experimental results show that this method...
In this paper, a method, which uses the new hybrid Pi-Sigma neural network to realize the Sugeno-Takagi fuzzy system, is presented. And then it is used for modelling the data association computation problem. Experimental results show that this method...
1999, 21(1): 78-82.
Abstract:
This paper presents a data fusion method of multiple hypotheses testing with distributed detection system. The data fusion algorithm is expanded to more general case. This paper describes the data fusion algorithm, the decision rule of system, the ca...
This paper presents a data fusion method of multiple hypotheses testing with distributed detection system. The data fusion algorithm is expanded to more general case. This paper describes the data fusion algorithm, the decision rule of system, the ca...
1999, 21(1): 83-90.
Abstract:
The paper analyses the improvement of track loss in clutter with multisensor data fusion. By adetemination of the transition probability desity function for the fusion prediction error, one can study the mechanism of track loss analytically. For near...
The paper analyses the improvement of track loss in clutter with multisensor data fusion. By adetemination of the transition probability desity function for the fusion prediction error, one can study the mechanism of track loss analytically. For near...
1999, 21(1): 91-96.
Abstract:
This paper presents fuzzy synthetic track correlation algorithms by using the synthetic analysis method in modern mathematics. In this paper, the computation and evaluation methods of the fuzzy synthetic measure of similarity between two state estima...
This paper presents fuzzy synthetic track correlation algorithms by using the synthetic analysis method in modern mathematics. In this paper, the computation and evaluation methods of the fuzzy synthetic measure of similarity between two state estima...
1999, 21(1): 97-103.
Abstract:
A novel neural network model---Linear Interpolation Neural Network(LINN) has been presented, which is used for radar target identification. And the 1-D range profiles of targets are used as identification feature. It is well known that the 1-D range ...
A novel neural network model---Linear Interpolation Neural Network(LINN) has been presented, which is used for radar target identification. And the 1-D range profiles of targets are used as identification feature. It is well known that the 1-D range ...
1999, 21(1): 104-109.
Abstract:
A nvoel method,time-domain variational iterative method(TVIM),for microwave imaging of two-dimensional lossless electromagnetic target buried in half space using time-domain scattering data is presented in this paper.It is an iterative method derived...
A nvoel method,time-domain variational iterative method(TVIM),for microwave imaging of two-dimensional lossless electromagnetic target buried in half space using time-domain scattering data is presented in this paper.It is an iterative method derived...
1999, 21(1): 110-114.
Abstract:
The scattering characteristics of Ⅱ- Ⅵ semiconductor materials with tensor conductivity resulting of the Hall-effect,filled in waveguide with gaps are analyzed with 3-D edge-element.Some useful curves are given and the procedure of determining mobili...
The scattering characteristics of Ⅱ- Ⅵ semiconductor materials with tensor conductivity resulting of the Hall-effect,filled in waveguide with gaps are analyzed with 3-D edge-element.Some useful curves are given and the procedure of determining mobili...
1999, 21(1): 115-120.
Abstract:
This paper deals with the profile reconstruction of the Array induction Imager Tool(AIT) measurement using the Distorted Born Iterative Method(DBIM) and an efficient Numerical Mode-Matching(NMM) method for the conductivity distribution in a two-dimen...
This paper deals with the profile reconstruction of the Array induction Imager Tool(AIT) measurement using the Distorted Born Iterative Method(DBIM) and an efficient Numerical Mode-Matching(NMM) method for the conductivity distribution in a two-dimen...
1999, 21(1): 121-123.
Abstract:
A new coding scheme for medical images is presented in this paper on the basis of discussion on the similarity between the radiological images of sequential slices of the same human organs or of the same positions of different human bodies. The exper...
A new coding scheme for medical images is presented in this paper on the basis of discussion on the similarity between the radiological images of sequential slices of the same human organs or of the same positions of different human bodies. The exper...
AUTOMATIC SEGMENTATION OF MEDICAL ULTRASONIC IMAGE USING SELF-CREATING AND ORGANIZING NEURAL NETWORK
1999, 21(1): 124-127.
Abstract:
The automatic segmentation of ultrasonic heart image using self-creating and organizing neural network has been studied. This kind of unsupervised clustering method can search for the optimal number of output nodes automatically to get the number of ...
The automatic segmentation of ultrasonic heart image using self-creating and organizing neural network has been studied. This kind of unsupervised clustering method can search for the optimal number of output nodes automatically to get the number of ...
1999, 21(1): 128-131.
Abstract:
In this paper, the Cauchy function is taken as a new target function of neural network accordings to the robustness theorem of statistics. Under the same network parameter conditions the BP net is trained using both mean squresand Cauchy target funct...
In this paper, the Cauchy function is taken as a new target function of neural network accordings to the robustness theorem of statistics. Under the same network parameter conditions the BP net is trained using both mean squresand Cauchy target funct...
1999, 21(1): 132-135.
Abstract:
In this paper, a timing-driven placement algorithm using Kohonen self-organizing is proposed. The object function of the algorithm is to minimize the critical nets. In the algorithm, net-based similarity vector is presented. Compared with the cell-ba...
In this paper, a timing-driven placement algorithm using Kohonen self-organizing is proposed. The object function of the algorithm is to minimize the critical nets. In the algorithm, net-based similarity vector is presented. Compared with the cell-ba...
1999, 21(1): 136-140.
Abstract:
In this paper, theoretical analyses and simulations are carried out to show that there are signal cancellation phenomena in the DED method proposed by Kumar (1996) for wide-band array processing in unknown noise, and new method is suggested to perfor...
In this paper, theoretical analyses and simulations are carried out to show that there are signal cancellation phenomena in the DED method proposed by Kumar (1996) for wide-band array processing in unknown noise, and new method is suggested to perfor...
1999, 21(1): 141-144.
Abstract:
The BDD (Binary Decision Diagram) is very important for representing synchronous circuits. After analyzing and reducing the BDD, the state traversing is proposed on the basis of collapsing of input, routes and states on STG. Finally, the verification...
The BDD (Binary Decision Diagram) is very important for representing synchronous circuits. After analyzing and reducing the BDD, the state traversing is proposed on the basis of collapsing of input, routes and states on STG. Finally, the verification...
