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2007 Vol. 29, No. 10
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Display Method:
2007, 29(10): 2287-2291.
doi: 10.3724/SP.J.1146.2006.01751
Abstract:
Color can provide an efficient visual cue for tracking based on appearance models. However, the apparent color of an object depends upon the illumination conditions, the viewing geometry and the camera parameters, all of which can vary during trackin...
Color can provide an efficient visual cue for tracking based on appearance models. However, the apparent color of an object depends upon the illumination conditions, the viewing geometry and the camera parameters, all of which can vary during trackin...
2007, 29(10): 2292-2295.
doi: 10.3724/SP.J.1146.2006.00017
Abstract:
To solve the problem of data association in maneuvering target tracking, a new method of data association is proposed. Being different from the Probabilistic Data Association Filter (PDAF), the proposed method assumes that the current turn rate of a ...
To solve the problem of data association in maneuvering target tracking, a new method of data association is proposed. Being different from the Probabilistic Data Association Filter (PDAF), the proposed method assumes that the current turn rate of a ...
2007, 29(10): 2296-2300.
doi: 10.3724/SP.J.1146.2006.01367
Abstract:
With a method of series expansion for image reconstruction, there exists great difficulties in terms of slow reconstruction due to bulk data to deal with. This paper presents the symmetric structure of projection lines for image reconstruction and pr...
With a method of series expansion for image reconstruction, there exists great difficulties in terms of slow reconstruction due to bulk data to deal with. This paper presents the symmetric structure of projection lines for image reconstruction and pr...
2007, 29(10): 2301-2304.
doi: 10.3724/SP.J.1146.2006.00356
Abstract:
Brushlet is a novel tool for image orientation analysis, whose energy feature is adopted in texture segmentation, image classification and denoising. In this paper, the property of Brushlet is used: the transform is a complex value function with a ph...
Brushlet is a novel tool for image orientation analysis, whose energy feature is adopted in texture segmentation, image classification and denoising. In this paper, the property of Brushlet is used: the transform is a complex value function with a ph...
2007, 29(10): 2305-2308.
doi: 10.3724/SP.J.1146.2006.00396
Abstract:
Matched filter is the optimal detector of LFM echo under the Gaussian white noise background, and the estimation of target range can be achieved according to the peak position of the matched filters output. The colored reverberation background and th...
Matched filter is the optimal detector of LFM echo under the Gaussian white noise background, and the estimation of target range can be achieved according to the peak position of the matched filters output. The colored reverberation background and th...
2007, 29(10): 2309-2312.
doi: 10.3724/SP.J.1146.2006.00956
Abstract:
The problem of concern here was the two-dimensional (2-D) harmonic frequency estimation in colored non-Gaussian noise. The 2-D cumulant projection theorem of complex linear non-Gaussian process was presented. The noise auto-correlation estimation was...
The problem of concern here was the two-dimensional (2-D) harmonic frequency estimation in colored non-Gaussian noise. The 2-D cumulant projection theorem of complex linear non-Gaussian process was presented. The noise auto-correlation estimation was...
2007, 29(10): 2313-2315.
doi: 10.3724/SP.J.1146.2006.00464
Abstract:
The statistics of the multiplicative and additive noise included in the sampled data is changed with squaring the sampled data. Cubic nonlinear coupling problem in zero mean independent noise is studied using a special fourth-order time-average momen...
The statistics of the multiplicative and additive noise included in the sampled data is changed with squaring the sampled data. Cubic nonlinear coupling problem in zero mean independent noise is studied using a special fourth-order time-average momen...
2007, 29(10): 2316-2320.
doi: 10.3724/SP.J.1146.2006.01819
Abstract:
Based on the model of Pulse Coupled Neural Network (PCNN) and the model of Nonlinear Anisotropic Diffusion (NAD), an improved model named ADPCNN is proposed and analyzed in theory. The new model resolves the problems of diffusion number of NAD model ...
Based on the model of Pulse Coupled Neural Network (PCNN) and the model of Nonlinear Anisotropic Diffusion (NAD), an improved model named ADPCNN is proposed and analyzed in theory. The new model resolves the problems of diffusion number of NAD model ...
2007, 29(10): 2321-2324.
doi: 10.3724/SP.J.1146.2006.00292
Abstract:
Considering the bad effect of steering vector errors on speech enhancement performance, a new blind beamforming based speech enhancement method is introduced in this paper. The blind beamforming combines fourth-order cross cumulant and Linear Constra...
Considering the bad effect of steering vector errors on speech enhancement performance, a new blind beamforming based speech enhancement method is introduced in this paper. The blind beamforming combines fourth-order cross cumulant and Linear Constra...
2007, 29(10): 2325-2328.
doi: 10.3724/SP.J.1146.2006.00247
Abstract:
Multiple Unmanned Aerial Vehicles (UAVs) cooperative searching is an important research area in cooperative control. The objective is reducing the uncertainty of the search area and achieving the information about it. This paper presents an approach ...
Multiple Unmanned Aerial Vehicles (UAVs) cooperative searching is an important research area in cooperative control. The objective is reducing the uncertainty of the search area and achieving the information about it. This paper presents an approach ...
2007, 29(10): 2329-2332.
doi: 10.3724/SP.J.1146.2006.00291
Abstract:
The information of radar emitter acquired by reconnaissance equipment is partial and fuzzy under complicated electromagnetic environment. For this reason, this paper firstly analyzes the characteristics of modern radar ELINT, and then identifies rada...
The information of radar emitter acquired by reconnaissance equipment is partial and fuzzy under complicated electromagnetic environment. For this reason, this paper firstly analyzes the characteristics of modern radar ELINT, and then identifies rada...
2007, 29(10): 2333-2336.
doi: 10.3724/SP.J.1146.2006.00494
Abstract:
The baseline error and gain and phase error of satellites have a great influence on the clutter cancellation and moving target relocation. As for the measurement of satellite baselines, only an order of decimeter precision can be obtained just by ins...
The baseline error and gain and phase error of satellites have a great influence on the clutter cancellation and moving target relocation. As for the measurement of satellite baselines, only an order of decimeter precision can be obtained just by ins...
2007, 29(10): 2337-2340.
doi: 10.3724/SP.J.1146.2006.00314
Abstract:
Due to the motion of a target, radar return signals are usually LFM signals with unknown frequency and unknown frequency modulated rate. Fractional Fourier transform has recently attracted much attention in detection and parameter estimation of multi...
Due to the motion of a target, radar return signals are usually LFM signals with unknown frequency and unknown frequency modulated rate. Fractional Fourier transform has recently attracted much attention in detection and parameter estimation of multi...
2007, 29(10): 2341-2345.
doi: 10.3724/SP.J.1146.2006.00268
Abstract:
A novel approach of radar target recognition is proposed in this paper. For each target class, according to maximum likelihood rule and minimum classification error rate rule, an optimal factor analysis subspace is constructed by factor analysis on t...
A novel approach of radar target recognition is proposed in this paper. For each target class, according to maximum likelihood rule and minimum classification error rate rule, an optimal factor analysis subspace is constructed by factor analysis on t...
2007, 29(10): 2346-2349.
doi: 10.3724/SP.J.1146.2006.00415
Abstract:
There is a growing interest in the Frequency Modulated Continuous Wave (FM-CW) SAR for its small cubage, light weight, cost-effective and high resolution. In this paper, the principle of the de-chirped FM-CW SAR is analyzed in detail, the phenomena, ...
There is a growing interest in the Frequency Modulated Continuous Wave (FM-CW) SAR for its small cubage, light weight, cost-effective and high resolution. In this paper, the principle of the de-chirped FM-CW SAR is analyzed in detail, the phenomena, ...
2007, 29(10): 2350-2353.
doi: 10.3724/SP.J.1146.2006.00264
Abstract:
The methods of data collection and miss distance measurement based on impulse radar are presented in this paper. The impulse radar collects return signal by range gates, which gets the data of distance corresponding every range gate and difference of...
The methods of data collection and miss distance measurement based on impulse radar are presented in this paper. The impulse radar collects return signal by range gates, which gets the data of distance corresponding every range gate and difference of...
2007, 29(10): 2354-2358.
doi: 10.3724/SP.J.1146.2006.00450
Abstract:
This paper proposes an non-cooperative target imaging technique based on the distributed multi-channel radar system, which consists of multiple sparsely-located transmitters and receivers. By coherently processing the signals received in multiple rad...
This paper proposes an non-cooperative target imaging technique based on the distributed multi-channel radar system, which consists of multiple sparsely-located transmitters and receivers. By coherently processing the signals received in multiple rad...
2007, 29(10): 2359-2362.
doi: 10.3724/SP.J.1146.2006.00475
Abstract:
The ENVISAT ASAR can operate on Alternating Polarization (AP) mode, which can provide three different dual polarization combinations. This paper derives target detectors for three different dual polarization combinations. The detection performance is...
The ENVISAT ASAR can operate on Alternating Polarization (AP) mode, which can provide three different dual polarization combinations. This paper derives target detectors for three different dual polarization combinations. The detection performance is...
2007, 29(10): 2363-2366.
doi: 10.3724/SP.J.1146.2006.00444
Abstract:
Considering the statistical independent property between phase and amplitude of SAR raw data, a new method is provided that the amplitude and phase of raw data are compressed respectively based on wavelet transform after a thorough analysis on the de...
Considering the statistical independent property between phase and amplitude of SAR raw data, a new method is provided that the amplitude and phase of raw data are compressed respectively based on wavelet transform after a thorough analysis on the de...
2007, 29(10): 2367-2370.
doi: 10.3724/SP.J.1146.2006.00321
Abstract:
Phase unwrapping is one of the key steps for the processing of InSAR data. The quality of the unwrapping results affects the final DEM (Digital Elevation Model) directly. In this paper, a new quality map is proposed. This new quality map reduces the ...
Phase unwrapping is one of the key steps for the processing of InSAR data. The quality of the unwrapping results affects the final DEM (Digital Elevation Model) directly. In this paper, a new quality map is proposed. This new quality map reduces the ...
2007, 29(10): 2371-2374.
doi: 10.3724/SP.J.1146.2006.00300
Abstract:
Cylindrical array antennas have three merits relative to common planar array antennas such as all-orientation space scanning, flexible search and track mode and good beam bearing etc. In this paper, firstly the differences between cylindrical array a...
Cylindrical array antennas have three merits relative to common planar array antennas such as all-orientation space scanning, flexible search and track mode and good beam bearing etc. In this paper, firstly the differences between cylindrical array a...
2007, 29(10): 2375-2378.
doi: 10.3724/SP.J.1146.2006.00256
Abstract:
A new motion compensation algorithm dealing with spatially variant phase error in azimuth direction is purposed in this article. Traditionally, only the spatially invariant part of phase error can be compensated and the residual spatially variant par...
A new motion compensation algorithm dealing with spatially variant phase error in azimuth direction is purposed in this article. Traditionally, only the spatially invariant part of phase error can be compensated and the residual spatially variant par...
2007, 29(10): 2379-2383.
doi: 10.3724/SP.J.1146.2006.00255
Abstract:
Aiming at airborne dual-antenna InSAR imaging, the characteristics of wavenumber domain imaging algorithms for master and slave antennas are analyzed. By introducing a range shift factor and a range scaling factor in range direction, a wavenumber dom...
Aiming at airborne dual-antenna InSAR imaging, the characteristics of wavenumber domain imaging algorithms for master and slave antennas are analyzed. By introducing a range shift factor and a range scaling factor in range direction, a wavenumber dom...
2007, 29(10): 2384-2387.
doi: 10.3724/SP.J.1146.2006.00404
Abstract:
Air- or vehicle-borne Ultra-WideBand Synthetic Aperture Radar (UWB SAR) can detect landmines or minefields over large area quickly, which is a trend of landmine detection. Traditional image formations, based on even medium assumption, are not suitabl...
Air- or vehicle-borne Ultra-WideBand Synthetic Aperture Radar (UWB SAR) can detect landmines or minefields over large area quickly, which is a trend of landmine detection. Traditional image formations, based on even medium assumption, are not suitabl...
2007, 29(10): 2388-2391.
doi: 10.3724/SP.J.1146.2006.00002
Abstract:
A Kalman filter positioning algorithm applied in BeiDou and INS integrated navigation system is proposed. Then, the observability, controllability and stability of integrated navigation filter algorithm is analyzed. The observability of every state i...
A Kalman filter positioning algorithm applied in BeiDou and INS integrated navigation system is proposed. Then, the observability, controllability and stability of integrated navigation filter algorithm is analyzed. The observability of every state i...
2007, 29(10): 2392-2395.
doi: 10.3724/SP.J.1146.2006.00245
Abstract:
A CPW-fed slot-coupled millimeter wave (Ka band) patch antenna is discussed. The coupling slot is on the ground plane, hence there is no need for a couple slot layer. The presence of the coupling slot changes the current distribution on the ground pl...
A CPW-fed slot-coupled millimeter wave (Ka band) patch antenna is discussed. The coupling slot is on the ground plane, hence there is no need for a couple slot layer. The presence of the coupling slot changes the current distribution on the ground pl...
2007, 29(10): 2396-2400.
doi: 10.3724/SP.J.1146.2006.00455
Abstract:
Based on the fact that there exist several subband signals in the received bandwidth, whose number, band location and bandwidth are time-variant, this paper presents an efficient method of dynamic channelization based on nonuniform filterbanks. The n...
Based on the fact that there exist several subband signals in the received bandwidth, whose number, band location and bandwidth are time-variant, this paper presents an efficient method of dynamic channelization based on nonuniform filterbanks. The n...
2007, 29(10): 2401-2404.
doi: 10.3724/SP.J.1146.2006.00233
Abstract:
Focusing on the problem that existing Space-Time Frequency-Shift Keying (ST-FSK) incurs a spectral efficiency loss, this paper proposes a novel ST-FSK based on Hadamard matrix modulation coined as HST-FSK. HST-FSK uses the Hadamard matrix to expand a...
Focusing on the problem that existing Space-Time Frequency-Shift Keying (ST-FSK) incurs a spectral efficiency loss, this paper proposes a novel ST-FSK based on Hadamard matrix modulation coined as HST-FSK. HST-FSK uses the Hadamard matrix to expand a...
A Novel Algorithm Based on Asymmetric-Nash-Bargain-Solution for Spectrum Sharing in Cognitive Radios
2007, 29(10): 2405-2409.
doi: 10.3724/SP.J.1146.2006.01276
Abstract:
A new scheme to share spectrum employing MIMO-OFDMA-based Cognitive Radio (CR) is proposed. First an Asymmetric-Nash-Bargain-Solution (ANBS)-based utility function is developed. And a new spectrum sharing algorithm based on sensing contribution weigh...
A new scheme to share spectrum employing MIMO-OFDMA-based Cognitive Radio (CR) is proposed. First an Asymmetric-Nash-Bargain-Solution (ANBS)-based utility function is developed. And a new spectrum sharing algorithm based on sensing contribution weigh...
2007, 29(10): 2410-2413.
doi: 10.3724/SP.J.1146.2006.00588
Abstract:
Carrier Frequency offsets in OFDMA system will introduce InterCarrier Interference (ICI) and consequently degrade the system performance. A new frequency offset estimation algorithm for OFDMA system based on the combination of ESPRIT (Estimation of S...
Carrier Frequency offsets in OFDMA system will introduce InterCarrier Interference (ICI) and consequently degrade the system performance. A new frequency offset estimation algorithm for OFDMA system based on the combination of ESPRIT (Estimation of S...
2007, 29(10): 2414-2417.
doi: 10.3724/SP.J.1146.2006.00364
Abstract:
A calibration algorithm of two-slope propagation model based on the recursive LLSM is expatiated in this paper to improve the accuracy of the propagation loss prediction in wireless network planning, and to improve the practicability of the two-slope...
A calibration algorithm of two-slope propagation model based on the recursive LLSM is expatiated in this paper to improve the accuracy of the propagation loss prediction in wireless network planning, and to improve the practicability of the two-slope...
2007, 29(10): 2418-2421.
doi: 10.3724/SP.J.1146.2006.00367
Abstract:
In future mobile system some independent handsets can obtain the benefits of cooperative diversity by the way of cooperative transmission. At the same time, information exchange error will degrade the performance of cooperative transmission. Consider...
In future mobile system some independent handsets can obtain the benefits of cooperative diversity by the way of cooperative transmission. At the same time, information exchange error will degrade the performance of cooperative transmission. Consider...
2007, 29(10): 2422-2425.
doi: 10.3724/SP.J.1146.2006.00311
Abstract:
For construct a high-rate and low-delay Complex Orthogonal Space-Time Block Codes (COSTBC) matrix, this paper presents an iterative design method without linear processing of symbols to generate high-rate and low-delay COSTBC matrix. By the orthogona...
For construct a high-rate and low-delay Complex Orthogonal Space-Time Block Codes (COSTBC) matrix, this paper presents an iterative design method without linear processing of symbols to generate high-rate and low-delay COSTBC matrix. By the orthogona...
2007, 29(10): 2426-2430.
doi: 10.3724/SP.J.1146.2006.01440
Abstract:
This paper firstly introduces a new architecture of adding the relay function to cellular systems in the dead spots, and describes the systems analytical model under this environment. Then based on this model, the call outage probability of this cell...
This paper firstly introduces a new architecture of adding the relay function to cellular systems in the dead spots, and describes the systems analytical model under this environment. Then based on this model, the call outage probability of this cell...
2007, 29(10): 2431-2435.
doi: 10.3724/SP.J.1146.2006.00383
Abstract:
Reducing the Peak-to-Average Power Ratio(PAPR) is one of the key technologies in MC-CDMA system. This paper derived the PAPR properties of MC-CDMA signal using orthogonal complementary spreading codes, constructed the polyphase spreading codes for MC...
Reducing the Peak-to-Average Power Ratio(PAPR) is one of the key technologies in MC-CDMA system. This paper derived the PAPR properties of MC-CDMA signal using orthogonal complementary spreading codes, constructed the polyphase spreading codes for MC...
2007, 29(10): 2436-2440.
doi: 10.3724/SP.J.1146.2006.00265
Abstract:
The principle of multi-user chaotic sequence spread-spectrum communication system is introduced. Performances of balance and correlation properties of three different chaotic spread series (Chebyshev, Logistic and Tent) are analyzed. The dynamic visu...
The principle of multi-user chaotic sequence spread-spectrum communication system is introduced. Performances of balance and correlation properties of three different chaotic spread series (Chebyshev, Logistic and Tent) are analyzed. The dynamic visu...
2007, 29(10): 2441-2443.
doi: 10.3724/SP.J.1146.2006.00412
Abstract:
The analytical method of shift sequences is presented comparing to the traditional algorithm which is used to compute correlation values originally, so a new algorithm for computing correlation values is gotten. Using the algorithm, it is analysed th...
The analytical method of shift sequences is presented comparing to the traditional algorithm which is used to compute correlation values originally, so a new algorithm for computing correlation values is gotten. Using the algorithm, it is analysed th...
2007, 29(10): 2444-2447.
doi: 10.3724/SP.J.1146.2006.00232
Abstract:
A single-pass frame-level Constant-SNR Bit Allocation (CSNRBA) scheme is developed for video quality smoothing throughout the video sequence in this paper. A power series weighted actual SNR average of previous coded frames is adopted as the target S...
A single-pass frame-level Constant-SNR Bit Allocation (CSNRBA) scheme is developed for video quality smoothing throughout the video sequence in this paper. A power series weighted actual SNR average of previous coded frames is adopted as the target S...
2007, 29(10): 2448-2450.
doi: 10.3724/SP.J.1146.2006.00340
Abstract:
This paper analyzes the security of the Naccache-Stern public key cryptosystem by providing an attack. The basic idea of the attack is that the decryption of the cryptosystem can be viewed as a group factorization problem and the solution to the prob...
This paper analyzes the security of the Naccache-Stern public key cryptosystem by providing an attack. The basic idea of the attack is that the decryption of the cryptosystem can be viewed as a group factorization problem and the solution to the prob...
2007, 29(10): 2451-2454.
doi: 10.3724/SP.J.1146.2006.00397
Abstract:
This paper designs ffgg★protocol which is similar toffggprotocol constructed by Millen.They have cryptographic properties in commen. Then,the protocol is analyzed by using constructing attack based on generalized strand space model ,and it is proved ...
This paper designs ffgg★protocol which is similar toffggprotocol constructed by Millen.They have cryptographic properties in commen. Then,the protocol is analyzed by using constructing attack based on generalized strand space model ,and it is proved ...
2007, 29(10): 2455-2459.
doi: 10.3724/SP.J.1146.2006.00329
Abstract:
According to the multi-protected mechanism of the immune system and the immune principles, such as the antigen recognition, immune study, co-stimulation, clone selection and negative selection, an immunology-based multi-protected detection method of ...
According to the multi-protected mechanism of the immune system and the immune principles, such as the antigen recognition, immune study, co-stimulation, clone selection and negative selection, an immunology-based multi-protected detection method of ...
2007, 29(10): 2460-2465.
doi: 10.3724/SP.J.1146.2006.00308
Abstract:
Web Services-based Services Management Protocol(WSSMP) is proposed, through which, services across different management domains can be efficiently managed. With Petri net, a formalized description of the protocol model is given. Moreover, the logical...
Web Services-based Services Management Protocol(WSSMP) is proposed, through which, services across different management domains can be efficiently managed. With Petri net, a formalized description of the protocol model is given. Moreover, the logical...
2007, 29(10): 2466-2470.
doi: 10.3724/SP.J.1146.2006.00467
Abstract:
The 802.11MAC protocol has been used widely in static multihop wireless network. It reduces the effect of hidden terminal for TCP performance, but it does not remove the effect of hidden terminal fully. But, the fairness of middle links will be affec...
The 802.11MAC protocol has been used widely in static multihop wireless network. It reduces the effect of hidden terminal for TCP performance, but it does not remove the effect of hidden terminal fully. But, the fairness of middle links will be affec...
2007, 29(10): 2471-2476.
doi: 10.3724/SP.J.1146.2006.00270
Abstract:
In the IMS(IP Multimedia Subsystem) specification of UMTS(Universal Mobile Telecommunications System) R6, the user must register its location in its home registrar. The session signaling have to reach its home registrar when user is not in home netwo...
In the IMS(IP Multimedia Subsystem) specification of UMTS(Universal Mobile Telecommunications System) R6, the user must register its location in its home registrar. The session signaling have to reach its home registrar when user is not in home netwo...
2007, 29(10): 2477-2481.
doi: 10.3724/SP.J.1146.2006.00249
Abstract:
Secure multicast uses a group key shared by all group members to encrypt group communication. To ensure security, key server should update the group key (rekey) when an existing member leaves the group or a new member joins the group. Key tree approa...
Secure multicast uses a group key shared by all group members to encrypt group communication. To ensure security, key server should update the group key (rekey) when an existing member leaves the group or a new member joins the group. Key tree approa...
2007, 29(10): 2482-2486.
doi: 10.3724/SP.J.1146.2006.00260
Abstract:
A major application level task in wireless sensor network operation is the formation of an adaptive local network, and the sensing data from sensors are gathered at a central node for various cooperative signal processing functions. Based on mutual i...
A major application level task in wireless sensor network operation is the formation of an adaptive local network, and the sensing data from sensors are gathered at a central node for various cooperative signal processing functions. Based on mutual i...
2007, 29(10): 2487-2492.
doi: 10.3724/SP.J.1146.2006.00618
Abstract:
Identifying and measuring large flows is an important scalable solution for traffic measuring accurately on high-speed networks. A new algorithm based on LRU replacement scheme is proposed, which uses the policies of early dropping small flows and pr...
Identifying and measuring large flows is an important scalable solution for traffic measuring accurately on high-speed networks. A new algorithm based on LRU replacement scheme is proposed, which uses the policies of early dropping small flows and pr...
2007, 29(10): 2493-2497.
doi: 10.3724/SP.J.1146.2006.00384
Abstract:
For the description of the nondeterministic factors in the non-repudiation protocols, the Kailar logic system extended with the default negation and the corresponding reasoning mechanism is introduced. The extended system can be used to verify securi...
For the description of the nondeterministic factors in the non-repudiation protocols, the Kailar logic system extended with the default negation and the corresponding reasoning mechanism is introduced. The extended system can be used to verify securi...
2007, 29(10): 2498-2503.
doi: 10.3724/SP.J.1146.2006.00272
Abstract:
With boosting of stream media applications, content-based media information retrieval becomes hot topic of current academic research. Since news program is familiar and popular, topic retrieval of news program has important practical significance. Ba...
With boosting of stream media applications, content-based media information retrieval becomes hot topic of current academic research. Since news program is familiar and popular, topic retrieval of news program has important practical significance. Ba...
2007, 29(10): 2504-2507.
doi: 10.3724/SP.J.1146.2006.00353
Abstract:
In this paper a wireless packet transmission scheme over Multiple Input Multiple Output (MIMO) Gaussian Broadcast Channel (GBC) is proposed. Specifically, the transmission packet delay constraint and broadcast channel capacity are considered jointly,...
In this paper a wireless packet transmission scheme over Multiple Input Multiple Output (MIMO) Gaussian Broadcast Channel (GBC) is proposed. Specifically, the transmission packet delay constraint and broadcast channel capacity are considered jointly,...
2007, 29(10): 2508-2511.
doi: 10.3724/SP.J.1146.2006.00310
Abstract:
In this paper a newly-proposed Liu chaotic system(2004) is synchronized by using fuzzy feedback method. The structure of Liu chaotic system is different from other linear chaotic systems. Firstly based on T-S(Takagi-Sugeno) fuzzy model, Liu chaotic s...
In this paper a newly-proposed Liu chaotic system(2004) is synchronized by using fuzzy feedback method. The structure of Liu chaotic system is different from other linear chaotic systems. Firstly based on T-S(Takagi-Sugeno) fuzzy model, Liu chaotic s...
2007, 29(10): 2512-2516.
doi: 10.3724/SP.J.1146.2006.00263
Abstract:
A modeling of 2.45GHz low-power microwave plasma source based on a microstrip split-ring resonator is presented in this paper. According to characteristics of half-wavelength resonator with a open circuit at the end, the parameters such as discharge ...
A modeling of 2.45GHz low-power microwave plasma source based on a microstrip split-ring resonator is presented in this paper. According to characteristics of half-wavelength resonator with a open circuit at the end, the parameters such as discharge ...
2007, 29(10): 2517-2520.
doi: 10.3724/SP.J.1146.2006.00298
Abstract:
Coupling of higher order transverse magnetic modes TM310 in microwave coaxial cavity of klystron with TE10 mode of rectangular waveguide is analyzed based on power-voltage and LC equivalent-circuit methods respectively. Gap impedances of output cavit...
Coupling of higher order transverse magnetic modes TM310 in microwave coaxial cavity of klystron with TE10 mode of rectangular waveguide is analyzed based on power-voltage and LC equivalent-circuit methods respectively. Gap impedances of output cavit...
2007, 29(10): 2521-2524.
doi: 10.3724/SP.J.1146.2006.00296
Abstract:
Numerical simulation of mode conversion from the coaxial waveguide TE◎01 mode to the circular waveguide TE○02 mode is studied. The mode conversion of directly connecting a coaxial waveguide to a cylindrical guide is analyzed, and the effect of a sect...
Numerical simulation of mode conversion from the coaxial waveguide TE◎01 mode to the circular waveguide TE○02 mode is studied. The mode conversion of directly connecting a coaxial waveguide to a cylindrical guide is analyzed, and the effect of a sect...
2007, 29(10): 2525-2528.
doi: 10.3724/SP.J.1146.2006.00973
Abstract:
A new type of System-On-Chip (SOC) integrated with ISFET/REFET/PRE and their signal detection circuits is developed. Carring out the basic chip with commercial standard CMOS processes, the preparation technique of sensitivity membrane compatible with...
A new type of System-On-Chip (SOC) integrated with ISFET/REFET/PRE and their signal detection circuits is developed. Carring out the basic chip with commercial standard CMOS processes, the preparation technique of sensitivity membrane compatible with...
2007, 29(10): 2533-2536.
doi: 10.3724/SP.J.1146.2006.00358
Abstract:
This paper presents the speckle suppression technology which includes the soft threshold, the hard threshold and the Garrote function threshold method. It gives the contrast result of the three method. Analyzed the embedded zero-trees wavelet coding ...
This paper presents the speckle suppression technology which includes the soft threshold, the hard threshold and the Garrote function threshold method. It gives the contrast result of the three method. Analyzed the embedded zero-trees wavelet coding ...
2007, 29(10): 2537-2540.
doi: 10.3724/SP.J.1146.2006.00483
Abstract:
The efficiency problem on pre-regulation stage of EPC used in spaceborne TWTA is studied in details. Some advice on how to improve the efficiency is given and the simulation results of Zero-Voltage-Switching circuit (ZVS) are presented. The simulatio...
The efficiency problem on pre-regulation stage of EPC used in spaceborne TWTA is studied in details. Some advice on how to improve the efficiency is given and the simulation results of Zero-Voltage-Switching circuit (ZVS) are presented. The simulatio...
2007, 29(10): 2529-2532.
doi: 10.3724/SP.J.1146.2006.00414
Abstract:
The proxy signature with proxy signer privacy protection without a trusted third party put forward by Gu-Zhang-yang(2005), does not posses the strong unforgeability property because of not being able to avoid the suspending-factor. With this scheme, ...
The proxy signature with proxy signer privacy protection without a trusted third party put forward by Gu-Zhang-yang(2005), does not posses the strong unforgeability property because of not being able to avoid the suspending-factor. With this scheme, ...
