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2008 Vol. 30, No. 12
Display Method:
2008, 30(12): 2795-2799.
doi: 10.3724/SP.J.1146.2007.01974
Abstract:
In this paper, an improved baseline estimation approach based on the Fourier analysis of the interferometric phases is presented. Four improvements are made: a precise method to calculate the instant phase frequency is given; the rule of distributing...
In this paper, an improved baseline estimation approach based on the Fourier analysis of the interferometric phases is presented. Four improvements are made: a precise method to calculate the instant phase frequency is given; the rule of distributing...
2008, 30(12): 2800-2804.
doi: 10.3724/SP.J.1146.2007.00810
Abstract:
The bistatic configuration, when transmitter and receiver move along nonparallel tracks with unequal velocities, is called the general bistatic Synthetic Aperture Radar (SAR). This kind of bistatic SAR system has the potential for various application...
The bistatic configuration, when transmitter and receiver move along nonparallel tracks with unequal velocities, is called the general bistatic Synthetic Aperture Radar (SAR). This kind of bistatic SAR system has the potential for various application...
2008, 30(12): 2805-2808.
doi: 10.3724/SP.J.1146.2007.00916
Abstract:
Circular Trace Scanning Synthetic Aperture Radar (CTS-SAR) is a new operation mode radar, which can be used for wide observation. CTS-SAR have the characteristic of high time-space resolution, short repetition visit period and wide observation area. ...
Circular Trace Scanning Synthetic Aperture Radar (CTS-SAR) is a new operation mode radar, which can be used for wide observation. CTS-SAR have the characteristic of high time-space resolution, short repetition visit period and wide observation area. ...
2008, 30(12): 2809-2812.
doi: 10.3724/SP.J.1146.2007.01059
Abstract:
Based on the theory of scattering center, the difference of back-scattering characteristics between the mobile targets and natural terrains in high-resolution SAR imagery is investigated, and the principles of texture features of the two kind targets...
Based on the theory of scattering center, the difference of back-scattering characteristics between the mobile targets and natural terrains in high-resolution SAR imagery is investigated, and the principles of texture features of the two kind targets...
2008, 30(12): 2813-2817.
doi: 10.3724/SP.J.1146.2007.00894
Abstract:
To obtain the higher range resolution Inverse Synthetic Aperture Radar (ISAR) image, a method by combining the bandwidth of the Linearly Modulated Stepped Frequency (LMSF) radar signal in frequency domain is discussed. The model of high speed moving ...
To obtain the higher range resolution Inverse Synthetic Aperture Radar (ISAR) image, a method by combining the bandwidth of the Linearly Modulated Stepped Frequency (LMSF) radar signal in frequency domain is discussed. The model of high speed moving ...
2008, 30(12): 2818-2821.
doi: 10.3724/SP.J.1146.2007.00920
Abstract:
This paper presents an algorithm about SAR image matching based on target detection．According to the characteristics of SAR image, this method detects the strong scatterer targets firstly，and then calculates the centroid points of the strong scattere...
This paper presents an algorithm about SAR image matching based on target detection．According to the characteristics of SAR image, this method detects the strong scatterer targets firstly，and then calculates the centroid points of the strong scattere...
2008, 30(12): 2822-2826.
doi: 10.3724/SP.J.1146.2007.00928
Abstract:
A novel iterative algorithm to estimate the hidden states of wavelet coefficients of SAR images is proposed by combing the Hidden Markov Tree (HMT) and the Hidden Markov Random Field (HMRF) model. Inter-scale and intra-scale correlation of the coeffi...
A novel iterative algorithm to estimate the hidden states of wavelet coefficients of SAR images is proposed by combing the Hidden Markov Tree (HMT) and the Hidden Markov Random Field (HMRF) model. Inter-scale and intra-scale correlation of the coeffi...
2008, 30(12): 2827-2830.
doi: 10.3724/SP.J.1146.2007.00950
Abstract:
For improving the estimated precision and rationality of the scattering coherency matrixes of the class center of different terrain types among the unsupervised classification based on polarimetric target decomposition and the maximum likelihood clas...
For improving the estimated precision and rationality of the scattering coherency matrixes of the class center of different terrain types among the unsupervised classification based on polarimetric target decomposition and the maximum likelihood clas...
2008, 30(12): 2831-2834.
doi: 10.3724/SP.J.1146.2007.00923
Abstract:
This paper investigates the clutter suppression problem of airborne multi-channel SAR-GMTI system. A key problem for ground moving target indication is clutter suppression, which is sensitive to the correlation of channels. For the multi-channel syst...
This paper investigates the clutter suppression problem of airborne multi-channel SAR-GMTI system. A key problem for ground moving target indication is clutter suppression, which is sensitive to the correlation of channels. For the multi-channel syst...
2008, 30(12): 2835-2839.
doi: 10.3724/SP.J.1146.2007.00919
Abstract:
The imaging of ship targets is an active area in ISAR research field. Its key is to obtain the valuable side view and top view ship images. In this paper, by measuring the Doppler spreads and the centerline slopes of the ship from a sequence of sub-i...
The imaging of ship targets is an active area in ISAR research field. Its key is to obtain the valuable side view and top view ship images. In this paper, by measuring the Doppler spreads and the centerline slopes of the ship from a sequence of sub-i...
2008, 30(12): 2840-2843.
doi: 10.3724/SP.J.1146.2007.01375
Abstract:
In order to develop bistatic SAR ocean investigation, the first issue is the study of bistatic SAR ocean surface imaging mechanism. And velocity bunching mechanism is a SAR inherent modulation. Thus, the intensity expression in the bistatic SAR image...
In order to develop bistatic SAR ocean investigation, the first issue is the study of bistatic SAR ocean surface imaging mechanism. And velocity bunching mechanism is a SAR inherent modulation. Thus, the intensity expression in the bistatic SAR image...
2008, 30(12): 2844-2848.
doi: 10.3724/SP.J.1146.2007.00946
Abstract:
To solve the detection problem of high-speed accelerating targets in LFMCW (Linear Frequency- Modulated Continuous Wave) radar, a secondary mixing combined DPT (Discrete Polynomial-phase Transform) method is proposed. Utilizing the modulation symmetr...
To solve the detection problem of high-speed accelerating targets in LFMCW (Linear Frequency- Modulated Continuous Wave) radar, a secondary mixing combined DPT (Discrete Polynomial-phase Transform) method is proposed. Utilizing the modulation symmetr...
2008, 30(12): 2849-2853.
doi: 10.3724/SP.J.1146.2007.00803
Abstract:
In this paper, the ballistic trajectory model of cone-shaped spatial target is introduced. The RCS expression versus cosine of the aspect angle is derived based on the aspect angle expression of a precession target. The frequency transmission charact...
In this paper, the ballistic trajectory model of cone-shaped spatial target is introduced. The RCS expression versus cosine of the aspect angle is derived based on the aspect angle expression of a precession target. The frequency transmission charact...
2008, 30(12): 2854-2857.
doi: 10.3724/SP.J.1146.2007.00903
Abstract:
In this paper, a new criterion which is based on the statistical distinction to evaluate SAR jamming effect is proposed, according to the difference of the jamming signal with the target signal. Recurring to Independent Component Analysis (ICA) metho...
In this paper, a new criterion which is based on the statistical distinction to evaluate SAR jamming effect is proposed, according to the difference of the jamming signal with the target signal. Recurring to Independent Component Analysis (ICA) metho...
2008, 30(12): 2858-2861.
doi: 10.3724/SP.J.1146.2007.01220
Abstract:
For vegetation parameter inversion, the single baseline polarimetric SAR interferometry technique, such as the three-stage method and the ESPRIT algorithm, is limited by the observed data with the minimum ground to volume amplitude ratio, which effec...
For vegetation parameter inversion, the single baseline polarimetric SAR interferometry technique, such as the three-stage method and the ESPRIT algorithm, is limited by the observed data with the minimum ground to volume amplitude ratio, which effec...
2008, 30(12): 2862-2866.
doi: 10.3724/SP.J.1146.2007.00823
Abstract:
In this paper, a variational level set approach for segmentation of Regions Of Interest (ROI) is presented. Following the analysis of the SAR image characteristic, a new energy functional is defined by importing the statistical model of speckle noise...
In this paper, a variational level set approach for segmentation of Regions Of Interest (ROI) is presented. Following the analysis of the SAR image characteristic, a new energy functional is defined by importing the statistical model of speckle noise...
2008, 30(12): 2867-2870.
doi: 10.3724/SP.J.1146.2008.00414
Abstract:
This paper proposes a new method for automatic building recognition and mapping in remote sensing images. The method calculates the multiple feature of building first, and then selects the best feature list with PCA algorithm to segment the imagery i...
This paper proposes a new method for automatic building recognition and mapping in remote sensing images. The method calculates the multiple feature of building first, and then selects the best feature list with PCA algorithm to segment the imagery i...
2008, 30(12): 2871-2875.
doi: 10.3724/SP.J.1146.2007.00947
Abstract:
To tackle the problem of tracking a maneuvering emitter by a single passive observer, an algorithm of combining the Central Difference Filter(CDF) and Interacting Multiple-Model(IMM) method is proposed. The proposed algorithm is easy to implement due...
To tackle the problem of tracking a maneuvering emitter by a single passive observer, an algorithm of combining the Central Difference Filter(CDF) and Interacting Multiple-Model(IMM) method is proposed. The proposed algorithm is easy to implement due...
2008, 30(12): 2876-2880.
doi: 10.3724/SP.J.1146.2007.00939
Abstract:
In this paper, a new scheme based on multi-scale is presented to match multi-modal images, in the airborne autonomous navigation system. Pyramid structure is exploited，in the scheme from coarse to fine. In the coarsest scale, a stepwise elimination s...
In this paper, a new scheme based on multi-scale is presented to match multi-modal images, in the airborne autonomous navigation system. Pyramid structure is exploited，in the scheme from coarse to fine. In the coarsest scale, a stepwise elimination s...
2008, 30(12): 2881-2885.
doi: 10.3724/SP.J.1146.2007.01855
Abstract:
This paper discusses some redundancy steps of FRFT in signal detection based on the decomposition of FRFT, and puts forward a Reduced FRFT (RFRFT) algorithm. Then it discusses several important characters of RFRFT in detail. Combined with the phase d...
This paper discusses some redundancy steps of FRFT in signal detection based on the decomposition of FRFT, and puts forward a Reduced FRFT (RFRFT) algorithm. Then it discusses several important characters of RFRFT in detail. Combined with the phase d...
2008, 30(12): 2886-2889.
doi: 10.3724/SP.J.1146.2007.00804
Abstract:
In this paper, a Voice Activity Detection algorithm is developed, which uses a distance measure parameter parallel connection distance of probability density to improve detection. The algorithm is based on the determination of the speech/noise diverg...
In this paper, a Voice Activity Detection algorithm is developed, which uses a distance measure parameter parallel connection distance of probability density to improve detection. The algorithm is based on the determination of the speech/noise diverg...
2008, 30(12): 2890-2893.
doi: 10.3724/SP.J.1146.2007.01871
Abstract:
In this paper, the implement process and application in image processing of bidimensinal EMD are given. Two interpolation methods are analyed and comperad in arithmetic speed and visual efficiency with experiments and theory, Delaunay triangulation b...
In this paper, the implement process and application in image processing of bidimensinal EMD are given. Two interpolation methods are analyed and comperad in arithmetic speed and visual efficiency with experiments and theory, Delaunay triangulation b...
2008, 30(12): 2894-2897.
doi: 10.3724/SP.J.1146.2007.00973
Abstract:
The Finite Ridgelet Transform (FRIT) is a new image processing method which could conquer the defect of Wavelet in high dimension. The method changes the line singularity in the image into the point singularity via the Radon transform, deals the poin...
The Finite Ridgelet Transform (FRIT) is a new image processing method which could conquer the defect of Wavelet in high dimension. The method changes the line singularity in the image into the point singularity via the Radon transform, deals the poin...
2008, 30(12): 2898-2901.
doi: 10.3724/SP.J.1146.2007.00951
Abstract:
In image local elastic transformation, compact support radial basis functions are used to implement local elastic deformation transformation. The elastic deformation area is related to the support of radial basis function. However, how to choose the ...
In image local elastic transformation, compact support radial basis functions are used to implement local elastic deformation transformation. The elastic deformation area is related to the support of radial basis function. However, how to choose the ...
2008, 30(12): 2902-2905.
doi: 10.3724/SP.J.1146.2007.00864
Abstract:
A new supervised linear dimensionality reduction method called Discriminant Projection Embedding (DPE) is proposed. Compared with widely-used Linear Discriminant Analysis (LDA), DPE can preserve the within-class neighboring geometry and extract betwe...
A new supervised linear dimensionality reduction method called Discriminant Projection Embedding (DPE) is proposed. Compared with widely-used Linear Discriminant Analysis (LDA), DPE can preserve the within-class neighboring geometry and extract betwe...
2008, 30(12): 2906-2911.
doi: 10.3724/SP.J.1146.2007.00915
Abstract:
Asynchrony of speech and lip motion is a key issue of multi-model fusion Audio-Visual Speech Recognition (AVSR). In this paper, a Multi-Stream Asynchrony Dynamic Bayesian Network (MS-ADBN) model is introduced, which looses the asynchrony of audio and...
Asynchrony of speech and lip motion is a key issue of multi-model fusion Audio-Visual Speech Recognition (AVSR). In this paper, a Multi-Stream Asynchrony Dynamic Bayesian Network (MS-ADBN) model is introduced, which looses the asynchrony of audio and...
2008, 30(12): 2912-2915.
doi: 10.3724/SP.J.1146.2007.00817
Abstract:
Blind image restoration is to recover the original image form the observed degraded image with unknown the Point Spread Function (PSF). This paper proposes a blind image restoration algorithm iteratively using wavelet denoising and total variation re...
Blind image restoration is to recover the original image form the observed degraded image with unknown the Point Spread Function (PSF). This paper proposes a blind image restoration algorithm iteratively using wavelet denoising and total variation re...
2008, 30(12): 2916-2920.
doi: 10.3724/SP.J.1146.2007.00961
Abstract:
An effective segmentation and recognition method of Chinese handwritten address strings is proposed. Firstly, over-segmentation is applied to character string images by extracting stroke and merging them to obtain radical sequences. Next, the optimal...
An effective segmentation and recognition method of Chinese handwritten address strings is proposed. Firstly, over-segmentation is applied to character string images by extracting stroke and merging them to obtain radical sequences. Next, the optimal...
2008, 30(12): 2921-2925.
doi: 10.3724/SP.J.1146.2007.00876
Abstract:
Analyzing sentences selection in summarization, an approach based on deleting sentences in a sentences set to obtain summary is proposed, which differs from the traditional method of adding sentences to get the summary. It has two stages, one is the ...
Analyzing sentences selection in summarization, an approach based on deleting sentences in a sentences set to obtain summary is proposed, which differs from the traditional method of adding sentences to get the summary. It has two stages, one is the ...
2008, 30(12): 2926-2929.
doi: 10.3724/SP.J.1146.2007.00868
Abstract:
Word Sense Disambiguation (WSD) is one of the key issues and difficulties in natural language processing. WSD is usually considered as an issue about pattern classification to study, which feature selection, is an important component. In this paper, ...
Word Sense Disambiguation (WSD) is one of the key issues and difficulties in natural language processing. WSD is usually considered as an issue about pattern classification to study, which feature selection, is an important component. In this paper, ...
2008, 30(12): 2930-2933.
doi: 10.3724/SP.J.1146.2007.00800
Abstract:
A new method is presented in this paper for the calculation of waveguide invariant () with passive sonar lofargram image. The distributions of in two waveguides are studied with normal mode model. Concise formula for calculating is then derived by fi...
A new method is presented in this paper for the calculation of waveguide invariant () with passive sonar lofargram image. The distributions of in two waveguides are studied with normal mode model. Concise formula for calculating is then derived by fi...
2008, 30(12): 2934-2937.
doi: 10.3724/SP.J.1146.2007.00801
Abstract:
Unknown interference and noise are ubiquitous in the complexity multi-antennas environment. They not only reduce precision of signal detection in Multi-Input Multi-Output (MIMO) systems seriously but also make it difficult to obtain perfect Channel S...
Unknown interference and noise are ubiquitous in the complexity multi-antennas environment. They not only reduce precision of signal detection in Multi-Input Multi-Output (MIMO) systems seriously but also make it difficult to obtain perfect Channel S...
2008, 30(12): 2938-2942.
doi: 10.3724/SP.J.1146.2008.00137
Abstract:
A new fast decoding method of Quasi-Cyclic LDPC(QC-LDPC)codes, named semi-serial decoding algorithm, is presented through contraposing the shortcoming of flood decoding method.For the algorithm, the message was updated in a serial sequence of m subse...
A new fast decoding method of Quasi-Cyclic LDPC(QC-LDPC)codes, named semi-serial decoding algorithm, is presented through contraposing the shortcoming of flood decoding method.For the algorithm, the message was updated in a serial sequence of m subse...
2008, 30(12): 2943-2946.
doi: 10.3724/SP.J.1146.2007.00847
Abstract:
A sub-optimal resource allocation algorithm for broadcast/multicast OFDM system is presented in this paper. By proposed algorithm, the fairness and efficiency is improved based on taking the target rates of different services as Quality of Service (Q...
A sub-optimal resource allocation algorithm for broadcast/multicast OFDM system is presented in this paper. By proposed algorithm, the fairness and efficiency is improved based on taking the target rates of different services as Quality of Service (Q...
2008, 30(12): 2947-2950.
doi: 10.3724/SP.J.1146.2007.00844
Abstract:
A novel Block Iterative (BI) and Adaptive Block Iterative (ABI) based schemes of Partial Transmit Sequence (PTS) for Peak to Average Power Ratio (PAPR) reduction in Orthogonal Frequency-Division Multiplexing (OFDM) are proposed, which can effectively...
A novel Block Iterative (BI) and Adaptive Block Iterative (ABI) based schemes of Partial Transmit Sequence (PTS) for Peak to Average Power Ratio (PAPR) reduction in Orthogonal Frequency-Division Multiplexing (OFDM) are proposed, which can effectively...
2008, 30(12): 2951-2954.
doi: 10.3724/SP.J.1146.2007.00911
Abstract:
MIMO is a main capacity improving technique in wireless communication. In slowly fading channel MIMO receiver can feedback the Channel State Information (CSI) to transmitter for the purpose of improving system performance. Traditional feedback-precod...
MIMO is a main capacity improving technique in wireless communication. In slowly fading channel MIMO receiver can feedback the Channel State Information (CSI) to transmitter for the purpose of improving system performance. Traditional feedback-precod...
2008, 30(12): 2955-2958.
doi: 10.3724/SP.J.1146.2007.00857
Abstract:
A space-time double iterative Sequential Monte Carlo (SMC) sampling-based detection algorithm is proposed for flat fading MIMO channel，based on traditional algorithms which only focus on time sampling or space sampling. A space-time multidimensional ...
A space-time double iterative Sequential Monte Carlo (SMC) sampling-based detection algorithm is proposed for flat fading MIMO channel，based on traditional algorithms which only focus on time sampling or space sampling. A space-time multidimensional ...
2008, 30(12): 2959-2962.
doi: 10.3724/SP.J.1146.2007.00813
Abstract:
In this paper, a novel and simple simulation model for the generation of Rayleigh waveforms with various autocorrelation properties is proposed. Based on this model, the method for generating the Rayleigh fading waveforms in wireless channels is give...
In this paper, a novel and simple simulation model for the generation of Rayleigh waveforms with various autocorrelation properties is proposed. Based on this model, the method for generating the Rayleigh fading waveforms in wireless channels is give...
Nash Fairness Based Resource Allocation Algorithm for Dirty-Paper Coded Multi-user MIMO-OFDM Systems
2008, 30(12): 2963-2966.
doi: 10.3724/SP.J.1146.2007.00969
Abstract:
MIMO-OFDM has been one of the most promising techniques for high data rate wireless transmission. In multi-user systems, how to guarantee the fairness among users while achieving large system throughput is an important issue for practical system desi...
MIMO-OFDM has been one of the most promising techniques for high data rate wireless transmission. In multi-user systems, how to guarantee the fairness among users while achieving large system throughput is an important issue for practical system desi...
2008, 30(12): 2967-2971.
doi: 10.3724/SP.J.1146.2008.00383
Abstract:
A Differential Jamming Rejection (DJR) receiver in FFH/MFSK systems is introduced under a worst-case band multi-tone jamming. This method, based on ahead spectrum detection using apriority knowledge of FHP (Frequency Hopping Pattern) and FH rate, imp...
A Differential Jamming Rejection (DJR) receiver in FFH/MFSK systems is introduced under a worst-case band multi-tone jamming. This method, based on ahead spectrum detection using apriority knowledge of FHP (Frequency Hopping Pattern) and FH rate, imp...
2008, 30(12): 2972-2975.
doi: 10.3724/SP.J.1146.2007.01848
Abstract:
Dynamic resource allocation algorithms are investigated for downlink multiuser Multiple Input Multiple Output Orthogonal Frequency Division Multiple Access and Space Division Multiple Access (MIMO-OFDMA/SDMA) systems. Firstly, a mathematical formulat...
Dynamic resource allocation algorithms are investigated for downlink multiuser Multiple Input Multiple Output Orthogonal Frequency Division Multiple Access and Space Division Multiple Access (MIMO-OFDMA/SDMA) systems. Firstly, a mathematical formulat...
2008, 30(12): 2976-2979.
doi: 10.3724/SP.J.1146.2007.00822
Abstract:
A Minimum Output Energy (MOE) noise suppression linear conjugate multiuser detection algorithm based on Recursive Least-Squares (RLS) is proposed for MC-CDMA system. The proposed algorithm defines a new cost function based on the MOE criterion and us...
A Minimum Output Energy (MOE) noise suppression linear conjugate multiuser detection algorithm based on Recursive Least-Squares (RLS) is proposed for MC-CDMA system. The proposed algorithm defines a new cost function based on the MOE criterion and us...
2008, 30(12): 2980-2983.
doi: 10.3724/SP.J.1146.2008.00035
Abstract:
In the pseudo-target geometrical constraint method, which aims at location using single observer in NLOS environment, the area of the target feasible region has direct effect on the speed and accuracy of the location algorithm. An optimal path planni...
In the pseudo-target geometrical constraint method, which aims at location using single observer in NLOS environment, the area of the target feasible region has direct effect on the speed and accuracy of the location algorithm. An optimal path planni...
2008, 30(12): 2984-2986.
doi: 10.3724/SP.J.1146.2006.02096
Abstract:
Conventional Bell-labs Layered Space Time (BLAST) receivers based on ZF or MMSE algorithm are of great complexity which can not be utilized in the mobile. This paper proposed a transmitter design which combined BLAST and eigenbeamforming with multipl...
Conventional Bell-labs Layered Space Time (BLAST) receivers based on ZF or MMSE algorithm are of great complexity which can not be utilized in the mobile. This paper proposed a transmitter design which combined BLAST and eigenbeamforming with multipl...
2008, 30(12): 2987-2990.
doi: 10.3724/SP.J.1146.2007.00935
Abstract:
When the chaotic systems are divided into linear and nonlinear parts, a new approach is presented to realize generalized synchronization of chaotic systems, by using feedback control and parameter commutation. Based on linear transform, the question ...
When the chaotic systems are divided into linear and nonlinear parts, a new approach is presented to realize generalized synchronization of chaotic systems, by using feedback control and parameter commutation. Based on linear transform, the question ...
2008, 30(12): 2991-2995.
doi: 10.3724/SP.J.1146.2007.00907
Abstract:
In this paper, the multi-output plateaued functions are constructed by methods of affine transformation, concatenation, injective sets and the state transform matrix of m-sequences. The variety of order is ascertained, and generalized Walsh cyclic sp...
In this paper, the multi-output plateaued functions are constructed by methods of affine transformation, concatenation, injective sets and the state transform matrix of m-sequences. The variety of order is ascertained, and generalized Walsh cyclic sp...
2008, 30(12): 2996-2998.
doi: 10.3724/SP.J.1146.2007.00873
Abstract:
A broadcast encryption scheme based on the interpolating polynomial is proposed. It allows the sender to designate multi-receivers to the Authority Center (AC). The interpolating polynomial is constructed and the related information is proclaimed by ...
A broadcast encryption scheme based on the interpolating polynomial is proposed. It allows the sender to designate multi-receivers to the Authority Center (AC). The interpolating polynomial is constructed and the related information is proclaimed by ...
2008, 30(12): 2999-3004.
doi: 10.3724/SP.J.1146.2008.00220
Abstract:
This paper specifies a Proxy Mobile IPv6 based Global Mobility Management architecture and protocol procedure, named PMIPGMM. In PMIPGMM, the mobility management is performed by network entity other than mobile node itself. The other benefit is the e...
This paper specifies a Proxy Mobile IPv6 based Global Mobility Management architecture and protocol procedure, named PMIPGMM. In PMIPGMM, the mobility management is performed by network entity other than mobile node itself. The other benefit is the e...
2008, 30(12): 3005-3008.
doi: 10.3724/SP.J.1146.2007.00889
Abstract:
In this paper, with uncertain demands, a robust optimization strategy is proposed to optimally solve the splitter placement problem for multicast in all-optical networks. The test in the paper shows that using robust strategy, the resource provisioni...
In this paper, with uncertain demands, a robust optimization strategy is proposed to optimally solve the splitter placement problem for multicast in all-optical networks. The test in the paper shows that using robust strategy, the resource provisioni...
2008, 30(12): 3009-3012.
doi: 10.3724/SP.J.1146.2007.00869
Abstract:
Based on the broad band multiplex system which provides real time VBR services with a complete sharing policy and best effort service, this paper focuses its attention on the average residual capacity, packet loss probability of real time services an...
Based on the broad band multiplex system which provides real time VBR services with a complete sharing policy and best effort service, this paper focuses its attention on the average residual capacity, packet loss probability of real time services an...
2008, 30(12): 3013-3017.
doi: 10.3724/SP.J.1146.2007.00821
Abstract:
Efficient energy conservation plays an important role in the performance of wireless Ad hoc networks because the nodes in such networks are usually equipped with battery. In order to reduce energy consumption in the network, a TPR (Topology-based Pow...
Efficient energy conservation plays an important role in the performance of wireless Ad hoc networks because the nodes in such networks are usually equipped with battery. In order to reduce energy consumption in the network, a TPR (Topology-based Pow...
2008, 30(12): 3018-3022.
doi: 10.3724/SP.J.1146.2007.01993
Abstract:
Batching is a simple but efficient scheduling mechanism for streaming media. An optimization model for average access delay is formulated to obtain the key aspects affecting the performance of Batching. Based on the analytical results, the maximum ur...
Batching is a simple but efficient scheduling mechanism for streaming media. An optimization model for average access delay is formulated to obtain the key aspects affecting the performance of Batching. Based on the analytical results, the maximum ur...
2008, 30(12): 3023-3026.
doi: 10.3724/SP.J.1146.2008.00067
Abstract:
Most of the existing protocols construct P2P topologies based on the history of P2P nodes actions, however, they can not ensure the efficiency of the topologies in time, when facing the complexity and turbulence of P2P nodes strategies. This paper fi...
Most of the existing protocols construct P2P topologies based on the history of P2P nodes actions, however, they can not ensure the efficiency of the topologies in time, when facing the complexity and turbulence of P2P nodes strategies. This paper fi...
2008, 30(12): 3027-3030.
doi: 10.3724/SP.J.1146.2007.00922
Abstract:
An enhanced DCF scheme, called U-DCF, based on logarithm utility function is proposed in this paper, since bandwidth resource can not be utilized efficiently in the chosen backoff parameters of 802.11 DCF. The users utility is a function of his data ...
An enhanced DCF scheme, called U-DCF, based on logarithm utility function is proposed in this paper, since bandwidth resource can not be utilized efficiently in the chosen backoff parameters of 802.11 DCF. The users utility is a function of his data ...
2008, 30(12): 3031-3034.
doi: 10.3724/SP.J.1146.2007.00586
Abstract:
Based on the linear stability theory, a new simple nonlinear feedback control method is proposed. The technique can be applied to drive the generalized projective synchronization for two new same hyper-chaotic systems or two different hyper-chaotic s...
Based on the linear stability theory, a new simple nonlinear feedback control method is proposed. The technique can be applied to drive the generalized projective synchronization for two new same hyper-chaotic systems or two different hyper-chaotic s...
