Several multiuser detectors for Code-Division Multiple-Access(CDMA) system have be'n studied recently. In this paper we propose the orthogonal decision-feedback detector. It combines the decorrelating decisionfeed...Several multiuser detectors for Code-Division Multiple-Access(CDMA) system have be'n studied recently. In this paper we propose the orthogonal decision-feedback detector. It combines the decorrelating decisionfeedback detector with the orthogonal detector, and has the merit of good performance of the decorrelating decisionfeedback detector and simple structure of the orthogonal detector The performance of the new multiuser detector is close to the decorrelating decision-feedback detector but its construction is simpler. Because of the similarities betWeen the multiuser detection problem and the decoding of the convolutional code, a tree search algorithm is taken on the detector which makes its performance improved. and approaches the single user bound.展开更多
The neural network for solving quadratic programming problem is further investigated, and theavailable stable testing condition of this method is purposed. We prove that the network, under proposed con-ditton, has a b...The neural network for solving quadratic programming problem is further investigated, and theavailable stable testing condition of this method is purposed. We prove that the network, under proposed con-ditton, has a behavtor of the global convergence. Hinally, numerical simulation examtaples aregiven.展开更多
A dynamical system for computing the elliptic boundary problem is presented.It is shown that the proposed system is globally asymptotically stable.The system can be simulated by a neural network.Simulation results are...A dynamical system for computing the elliptic boundary problem is presented.It is shown that the proposed system is globally asymptotically stable.The system can be simulated by a neural network.Simulation results are valid and satisfactory.展开更多
Dynamic channel allocation can reduce the blocking probability of cellular networks. This paper aims atestimating the blocking probability for cellular networki with dynamic channel allocation. Traffic analysis models...Dynamic channel allocation can reduce the blocking probability of cellular networks. This paper aims atestimating the blocking probability for cellular networki with dynamic channel allocation. Traffic analysis modelsare presented to evaluate performance of cellular networkS, The blocking probabilities versus traffic offered to eachcell are analyzed and simulated Comparisons between analysis and simulation results are made.展开更多
In this paper, we present an algorithm for solving a class of transportation problems and show that it is globally convergent. The proposed algorithm is simple to implement and easy to parallelize. The numerical resul...In this paper, we present an algorithm for solving a class of transportation problems and show that it is globally convergent. The proposed algorithm is simple to implement and easy to parallelize. The numerical results indicate that the proposed algorithm is effective for this class of problems.展开更多
The international standard for High Definition Television( HDTV ) in MPEG 2 has been established for a few years. Some industrialized modern countries are positively developing HDTV products. However, there...The international standard for High Definition Television( HDTV ) in MPEG 2 has been established for a few years. Some industrialized modern countries are positively developing HDTV products. However, there are few profound analyses of the HDTV luminance signal's three dimensional (3 D ) spectrum. The authors make a detailed study of them and sum up the features of the (3 D ) HDTV luminance signal's spectrums and their mathematical expressions. Based on them, the authors draw their spectral figures.展开更多
In this paper a fuzzy logic-based system is presented to deal with the congestion control and policing problem in ATM networks. We combine the modified Leaky Bucket (LB) technique with the moving window mechanism to i...In this paper a fuzzy logic-based system is presented to deal with the congestion control and policing problem in ATM networks. We combine the modified Leaky Bucket (LB) technique with the moving window mechanism to identify the traffic parameters. The Fuzzy Leaky Bucket (FLB ) modifies the token rate according to the peak rate and the burst time which characterize the source behavior Simulation results show that our system is transparent to sources with respect to the parameter values negotiated at the call setup and effective in detecting source violation with low response time.展开更多
The paper makes a detailed analysis and design of the Vega application software based on Windows NT platform. It includes object oriented software analysis and design, design patterns and Windows kernel mechanism...The paper makes a detailed analysis and design of the Vega application software based on Windows NT platform. It includes object oriented software analysis and design, design patterns and Windows kernel mechanism. The paper brings forward a design pattern, a fence pattern, and depends on this pattern. Windows NT memory mapped files adopted, the paper presents a Vega application solution based on the multi process technique. Although the design solution is developing under a real time simulation system, it is established at the clear analysis of the Vega system, therefore, the solution has extensive practicability and many uses.展开更多
文摘Several multiuser detectors for Code-Division Multiple-Access(CDMA) system have be'n studied recently. In this paper we propose the orthogonal decision-feedback detector. It combines the decorrelating decisionfeedback detector with the orthogonal detector, and has the merit of good performance of the decorrelating decisionfeedback detector and simple structure of the orthogonal detector The performance of the new multiuser detector is close to the decorrelating decision-feedback detector but its construction is simpler. Because of the similarities betWeen the multiuser detection problem and the decoding of the convolutional code, a tree search algorithm is taken on the detector which makes its performance improved. and approaches the single user bound.
文摘The neural network for solving quadratic programming problem is further investigated, and theavailable stable testing condition of this method is purposed. We prove that the network, under proposed con-ditton, has a behavtor of the global convergence. Hinally, numerical simulation examtaples aregiven.
文摘A dynamical system for computing the elliptic boundary problem is presented.It is shown that the proposed system is globally asymptotically stable.The system can be simulated by a neural network.Simulation results are valid and satisfactory.
文摘Dynamic channel allocation can reduce the blocking probability of cellular networks. This paper aims atestimating the blocking probability for cellular networki with dynamic channel allocation. Traffic analysis modelsare presented to evaluate performance of cellular networkS, The blocking probabilities versus traffic offered to eachcell are analyzed and simulated Comparisons between analysis and simulation results are made.
文摘In this paper, we present an algorithm for solving a class of transportation problems and show that it is globally convergent. The proposed algorithm is simple to implement and easy to parallelize. The numerical results indicate that the proposed algorithm is effective for this class of problems.
文摘The international standard for High Definition Television( HDTV ) in MPEG 2 has been established for a few years. Some industrialized modern countries are positively developing HDTV products. However, there are few profound analyses of the HDTV luminance signal's three dimensional (3 D ) spectrum. The authors make a detailed study of them and sum up the features of the (3 D ) HDTV luminance signal's spectrums and their mathematical expressions. Based on them, the authors draw their spectral figures.
文摘In this paper a fuzzy logic-based system is presented to deal with the congestion control and policing problem in ATM networks. We combine the modified Leaky Bucket (LB) technique with the moving window mechanism to identify the traffic parameters. The Fuzzy Leaky Bucket (FLB ) modifies the token rate according to the peak rate and the burst time which characterize the source behavior Simulation results show that our system is transparent to sources with respect to the parameter values negotiated at the call setup and effective in detecting source violation with low response time.
文摘The paper makes a detailed analysis and design of the Vega application software based on Windows NT platform. It includes object oriented software analysis and design, design patterns and Windows kernel mechanism. The paper brings forward a design pattern, a fence pattern, and depends on this pattern. Windows NT memory mapped files adopted, the paper presents a Vega application solution based on the multi process technique. Although the design solution is developing under a real time simulation system, it is established at the clear analysis of the Vega system, therefore, the solution has extensive practicability and many uses.
