Email alert
2014 Vol. 36, No. 9
Display Method:
2014, 36(9): 2033-2040.
doi: 10.3724/SP.J.1146.2013.01562
Abstract:
A Generalized Discriminant Analysis (GDA) based method is proposed to find the optimal chroma-like channel for image splicing detection. The channel design scheme is modeled as an optimization problem in which the objective function is the discrimina...
A Generalized Discriminant Analysis (GDA) based method is proposed to find the optimal chroma-like channel for image splicing detection. The channel design scheme is modeled as an optimization problem in which the objective function is the discrimina...
2014, 36(9): 2041-2046.
doi: 10.3724/SP.J.1146.2013.01598
Abstract:
Symmetry detection plays an important role in image analysis and pattern recognition. Based on phase symmetry and principal component analysis, a new image symmetry detection method is proposed. Firstly, phase symmetry is computed on different scales...
Symmetry detection plays an important role in image analysis and pattern recognition. Based on phase symmetry and principal component analysis, a new image symmetry detection method is proposed. Firstly, phase symmetry is computed on different scales...
2014, 36(9): 2047-2052.
doi: 10.3724/SP.J.1146.2013.01763
Abstract:
Color-based moving object detection performs poorly when illumination changes or shadow exists. Depth-based moving object detection is affected by the high level of depth-data noise at object boundaries, and it fails when foreground objects move clos...
Color-based moving object detection performs poorly when illumination changes or shadow exists. Depth-based moving object detection is affected by the high level of depth-data noise at object boundaries, and it fails when foreground objects move clos...
2014, 36(9): 2053-2060.
doi: 10.3724/SP.J.1146.2013.01534
Abstract:
In order to solve the thorny cerebrovascular segmentation problems about cerebral vessels of many branches, small shape, special position and complex patterns, this paper presents a novel statistical method to achieve effectively the accurate segment...
In order to solve the thorny cerebrovascular segmentation problems about cerebral vessels of many branches, small shape, special position and complex patterns, this paper presents a novel statistical method to achieve effectively the accurate segment...
2014, 36(9): 2061-2067.
doi: 10.3724/SP.J.1146.2013.01506
Abstract:
In this paper, a novel salient image edge detection technique that is based on Ant Colony Optimization (ACO) is presented. Firstly, the proposed method designs a new edge saliency description called Support Region Area (SRA) using phase grouping algo...
In this paper, a novel salient image edge detection technique that is based on Ant Colony Optimization (ACO) is presented. Firstly, the proposed method designs a new edge saliency description called Support Region Area (SRA) using phase grouping algo...
2014, 36(9): 2068-2074.
doi: 10.3724/SP.J.1146.2013.01488
Abstract:
Mostly, some traces of digital tamper may be left in the image during the manipulation, which result in the inconsistency of the natural images and provide some clues for image forgeries. This paper proposes a novel double compression probability mod...
Mostly, some traces of digital tamper may be left in the image during the manipulation, which result in the inconsistency of the natural images and provide some clues for image forgeries. This paper proposes a novel double compression probability mod...
2014, 36(9): 2075-2080.
doi: 10.3724/SP.J.1146.2013.01756
Abstract:
A parameter estimation algorithm based on the power spectral Discrete Cosine Transform (DCT) is proposed to estimate the parameters of Binary Phase Shift Keying (BPSK) signals under low Signal-to-Noise Ratio (SNR) environment. According to DCTs and e...
A parameter estimation algorithm based on the power spectral Discrete Cosine Transform (DCT) is proposed to estimate the parameters of Binary Phase Shift Keying (BPSK) signals under low Signal-to-Noise Ratio (SNR) environment. According to DCTs and e...
2014, 36(9): 2081-2085.
doi: 10.3724/SP.J.1146.2013.01697
Abstract:
New constructions of perfect Gaussian integer sequence with even period are proposed. According to the parity of the multilevel perfect sequences over integer, different mappings and combined methods are used for constructing perfect Gaussian integer...
New constructions of perfect Gaussian integer sequence with even period are proposed. According to the parity of the multilevel perfect sequences over integer, different mappings and combined methods are used for constructing perfect Gaussian integer...
2014, 36(9): 2086-2092.
doi: 10.3724/SP.J.1146.2013.01609
Abstract:
Based on binary Zero Correlation Zone (ZCZ) periodic complementary sequence sets with even period, new quaternary ZCZ periodic complementary sequence sets are researched by using inverse Gray mapping. The optimality of the sequence sets is improved, ...
Based on binary Zero Correlation Zone (ZCZ) periodic complementary sequence sets with even period, new quaternary ZCZ periodic complementary sequence sets are researched by using inverse Gray mapping. The optimality of the sequence sets is improved, ...
2014, 36(9): 2093-2097.
doi: 10.3724/SP.J.1146.2013.01622
Abstract:
Recently, based on Belief-Propagation (BP), Min-Sum (MS) and Normalized MS (NMS) algorithms, three corresponding Weighted Bit Flipping (WBF) decoding algorithms are proposed for LDPC codes. However, not only the strict physical significance but also ...
Recently, based on Belief-Propagation (BP), Min-Sum (MS) and Normalized MS (NMS) algorithms, three corresponding Weighted Bit Flipping (WBF) decoding algorithms are proposed for LDPC codes. However, not only the strict physical significance but also ...
2014, 36(9): 2098-2103.
doi: 10.3724/SP.J.1146.2013.01692
Abstract:
With focus on blind estimation of the Pseudo-Noise (PN) sequence of a Direct Sequence Spread Spectrum (DSSS) signal in non-cooperative spread spectrum communications, a blind estimation approach of PN sequence and information sequence is proposed bas...
With focus on blind estimation of the Pseudo-Noise (PN) sequence of a Direct Sequence Spread Spectrum (DSSS) signal in non-cooperative spread spectrum communications, a blind estimation approach of PN sequence and information sequence is proposed bas...
2014, 36(9): 2104-2110.
doi: 10.3724/SP.J.1146.2013.01661
Abstract:
This paper focuses on the resource allocation problem in OFDM-based Decode-and-Forward (DF) relay link to maximize Energy Efficiency (EE). Different from the exiting researches that minimizing the transmission power under constant date rate or maximi...
This paper focuses on the resource allocation problem in OFDM-based Decode-and-Forward (DF) relay link to maximize Energy Efficiency (EE). Different from the exiting researches that minimizing the transmission power under constant date rate or maximi...
2014, 36(9): 2111-2116.
doi: 10.3724/SP.J.1146.2013.01711
Abstract:
Conventionally, linear precoding methods in a Cognitive Radio (CR) Multiple Input Multiple Output (MIMO) network mainly aim to limit or completely cancel the interference between Secondary Users (SUs) while achieving superior performance of the CR sy...
Conventionally, linear precoding methods in a Cognitive Radio (CR) Multiple Input Multiple Output (MIMO) network mainly aim to limit or completely cancel the interference between Secondary Users (SUs) while achieving superior performance of the CR sy...
2014, 36(9): 2117-2123.
doi: 10.3724/SP.J.1146.2013.01492
Abstract:
This paper addresses the spatial correlation of MIMO channel with application to indoor Visible Light Communication (VLC). This study establishes a model for indoor VLC MIMO channel based on the Lambert radiation model, and then analyzes the effect o...
This paper addresses the spatial correlation of MIMO channel with application to indoor Visible Light Communication (VLC). This study establishes a model for indoor VLC MIMO channel based on the Lambert radiation model, and then analyzes the effect o...
2014, 36(9): 2124-2130.
doi: 10.3724/SP.J.1146.2013.01666
Abstract:
Truncated differential cryptanalysis is a variant of differential cryptanalysis. In order to evaluate the ability of a block cipher against the truncated differential cryptanalysis, it is needed to give out the upper bound of the probability of the t...
Truncated differential cryptanalysis is a variant of differential cryptanalysis. In order to evaluate the ability of a block cipher against the truncated differential cryptanalysis, it is needed to give out the upper bound of the probability of the t...
2014, 36(9): 2131-2137.
doi: 10.3724/SP.J.1146.2014.00002
Abstract:
In order to get the efficient resource utilization in wireless network, this paper introduces a novel- Coverage and Capacity Proportional Fairness (-CCPF) scheduling algorithm for network Coverage and Capacity Optimization (CCO) on the basis of enhan...
In order to get the efficient resource utilization in wireless network, this paper introduces a novel- Coverage and Capacity Proportional Fairness (-CCPF) scheduling algorithm for network Coverage and Capacity Optimization (CCO) on the basis of enhan...
2014, 36(9): 2138-2144.
doi: 10.3724/SP.J.1146.2013.01481
Abstract:
In order to comprehensively and effectively assess the vulnerability of power communication network, which is an important supporting network of smart gird, a cross-layer assessment method based on the information entropy is proposed. Firstly, a calc...
In order to comprehensively and effectively assess the vulnerability of power communication network, which is an important supporting network of smart gird, a cross-layer assessment method based on the information entropy is proposed. Firstly, a calc...
2014, 36(9): 2145-2151.
doi: 10.3724/SP.J.1146.2013.01585
Abstract:
In ubiquitous stub environments, the limited network resources and device capabilities are always causing the conflict of multi-user utilities allocation. To deal with this problem, a Device Composition Mechanism of Multi-service Equilibrium (DCMME) ...
In ubiquitous stub environments, the limited network resources and device capabilities are always causing the conflict of multi-user utilities allocation. To deal with this problem, a Device Composition Mechanism of Multi-service Equilibrium (DCMME) ...
2014, 36(9): 2152-2157.
doi: 10.3724/SP.J.1146.2013.01777
Abstract:
The pros and cons of load balancing among multi cells has a big impact on the network performance. Due to the trade-off of the existing methods, they are difficult to ensure the key performance indicators (e.g. the call blocking rate) to obtain best ...
The pros and cons of load balancing among multi cells has a big impact on the network performance. Due to the trade-off of the existing methods, they are difficult to ensure the key performance indicators (e.g. the call blocking rate) to obtain best ...
2014, 36(9): 2158-2165.
doi: 10.3724/SP.J.1146.2013.01600
Abstract:
Two novel methods based on hosts behavior analysis are proposed for encrypted packet-based Internet traffic classification. Combined with traffic matrix and network structure entropy, some new exponents for in-degree and out-degree are introduced to ...
Two novel methods based on hosts behavior analysis are proposed for encrypted packet-based Internet traffic classification. Combined with traffic matrix and network structure entropy, some new exponents for in-degree and out-degree are introduced to ...
2014, 36(9): 2166-2172.
doi: 10.3724/SP.J.1146.2013.01645
Abstract:
In this paper a sparse array SAR 3D imaging for continuous scene based on Compressed Sensing (CS) is proposed. It exploits the sparsity property of the SAR image under multi-aperture observation structure which supposes that SAR images become sparse ...
In this paper a sparse array SAR 3D imaging for continuous scene based on Compressed Sensing (CS) is proposed. It exploits the sparsity property of the SAR image under multi-aperture observation structure which supposes that SAR images become sparse ...
2014, 36(9): 2173-2179.
doi: 10.3724/SP.J.1146.2013.01590
Abstract:
As Inverse SAR (ISAR) imaging utilizes synthetic aperture with aspects changes related to the Radar Line of Sight (RLOS) to acquire azimuth resolution, the accurate estimation of rotated velocity is pivotal for the geometric scaling of ISAR images to...
As Inverse SAR (ISAR) imaging utilizes synthetic aperture with aspects changes related to the Radar Line of Sight (RLOS) to acquire azimuth resolution, the accurate estimation of rotated velocity is pivotal for the geometric scaling of ISAR images to...
2014, 36(9): 2180-2186.
doi: 10.3724/SP.J.1146.2013.01558
Abstract:
In order to jointly use the MIMO-ISAR space-time sampling signals for imaging, a novel method based on 2D frequency estimation is proposed for the rearrangement of MIMO-ISAR space-time echo. Firstly, the ratio of the frequencies of space and time sam...
In order to jointly use the MIMO-ISAR space-time sampling signals for imaging, a novel method based on 2D frequency estimation is proposed for the rearrangement of MIMO-ISAR space-time echo. Firstly, the ratio of the frequencies of space and time sam...
2014, 36(9): 2187-2193.
doi: 10.3724/SP.J.1146.2013.01486
Abstract:
A common problem in Inverse Synthetic Aperture Radar (ISAR) imaging is to estimate the rotating parameters for uniformly accelerated rotation target. At first, the radar echo model for uniformly accelerated rotation target is introduced. Then, the re...
A common problem in Inverse Synthetic Aperture Radar (ISAR) imaging is to estimate the rotating parameters for uniformly accelerated rotation target. At first, the radar echo model for uniformly accelerated rotation target is introduced. Then, the re...
2014, 36(9): 2194-2200.
doi: 10.3724/SP.J.1146.2013.01451
Abstract:
In order to solve the occlusion issue in SAR image target recognition, a new classification method is proposed based on non-negative sparse representation. The difference between L0-norm and L1-norm minimization in solving non-negative sparse represe...
In order to solve the occlusion issue in SAR image target recognition, a new classification method is proposed based on non-negative sparse representation. The difference between L0-norm and L1-norm minimization in solving non-negative sparse represe...
2014, 36(9): 2201-2206.
doi: 10.3724/SP.J.1146.2013.01792
Abstract:
This paper proposes a new mono-pulse radar beam sharpening method with multichannel L1 regularization. First, a multi-channel L1 regularization model is derived for mono-pulse radar beam sharpening based on the maximum a posteriori probability criter...
This paper proposes a new mono-pulse radar beam sharpening method with multichannel L1 regularization. First, a multi-channel L1 regularization model is derived for mono-pulse radar beam sharpening based on the maximum a posteriori probability criter...
2014, 36(9): 2207-2213.
doi: 10.3724/SP.J.1146.2013.01582
Abstract:
Along-Track Interferometric Synthetic Aperture Radar (ATI-SAR) has the potential to measure the radial velocities of slowly moving targets. The accuracy of the radial velocity is limited by the accuracy of the interferometric parameters. Sensitivity ...
Along-Track Interferometric Synthetic Aperture Radar (ATI-SAR) has the potential to measure the radial velocities of slowly moving targets. The accuracy of the radial velocity is limited by the accuracy of the interferometric parameters. Sensitivity ...
2014, 36(9): 2214-2219.
doi: 10.3724/SP.J.1146.2013.01709
Abstract:
Non-side-looking airborne radar can induce variation of clutter signature with range and the conventional method for space time adaptive processing has significant performance degradation. To deal with this problem, this paper presents an adaptive su...
Non-side-looking airborne radar can induce variation of clutter signature with range and the conventional method for space time adaptive processing has significant performance degradation. To deal with this problem, this paper presents an adaptive su...
2014, 36(9): 2220-2226.
doi: 10.3724/SP.J.1146.2013.01670
Abstract:
The mainbeam is difficult to maintain in adaptive beamforming for conformal array, and even worse, the sidelobe is very high. To alleviate these problems, an adaptive beamforming method is proposed based on the response vector optimization. Through a...
The mainbeam is difficult to maintain in adaptive beamforming for conformal array, and even worse, the sidelobe is very high. To alleviate these problems, an adaptive beamforming method is proposed based on the response vector optimization. Through a...
2014, 36(9): 2227-2231.
doi: 10.3724/SP.J.1146.2013.01688
Abstract:
For expanding the passband, two Antipodal Sinusoidally Tapered Slot Antennas (ASTSAs) with high gain and wide bandwidth are proposed based on the conventional ALTSA and fed by Substrate Integrated Waveguide (SIW). The Half Mode Substrate Integrated W...
For expanding the passband, two Antipodal Sinusoidally Tapered Slot Antennas (ASTSAs) with high gain and wide bandwidth are proposed based on the conventional ALTSA and fed by Substrate Integrated Waveguide (SIW). The Half Mode Substrate Integrated W...
2014, 36(9): 2232-2237.
doi: 10.3724/SP.J.1146.2013.01807
Abstract:
In view of the weakness of millimeter wave radiation signals energy, a calibration method for linear array with the presence of sensor gain, phase and position errors is presented. Based on the array distortion model at low Signal-to Noise Ratio (SNR...
In view of the weakness of millimeter wave radiation signals energy, a calibration method for linear array with the presence of sensor gain, phase and position errors is presented. Based on the array distortion model at low Signal-to Noise Ratio (SNR...
2014, 36(9): 2238-2243.
doi: 10.3724/SP.J.1146.2013.01737
Abstract:
Time Reversal (TR) is a new method for wave propagation and control with electromagnetic environment adaptability. Time reversal method can simplify the pattern design of antenna arrays with complicated structures. In this paper, a time reversal meth...
Time Reversal (TR) is a new method for wave propagation and control with electromagnetic environment adaptability. Time reversal method can simplify the pattern design of antenna arrays with complicated structures. In this paper, a time reversal meth...
2014, 36(9): 2244-2250.
doi: 10.3724/SP.J.1146.2013.01623
Abstract:
The spaceborne scatterometers which are in operation with a general resolution of 25km are already challenged by the higher resolution requirement in some applications, such as polar ice mapping, rainforest mapping and the research of coastal wind. T...
The spaceborne scatterometers which are in operation with a general resolution of 25km are already challenged by the higher resolution requirement in some applications, such as polar ice mapping, rainforest mapping and the research of coastal wind. T...
2014, 36(9): 2251-2257.
doi: 10.3724/SP.J.1146.2013.01646
Abstract:
Interconnection network plays an important role in Coarse-Grained Reconfigurable Arrays (CGRAs), and it has a significant influence on the performance, area cost and power consumption. To reduce the area cost and power consumption caused by the inter...
Interconnection network plays an important role in Coarse-Grained Reconfigurable Arrays (CGRAs), and it has a significant influence on the performance, area cost and power consumption. To reduce the area cost and power consumption caused by the inter...
2014, 36(9): 2258-2264.
doi: 10.3724/SP.J.1146.2013.01536
Abstract:
With the deficiency of the published tabular techniques based algorithms which can only handle small functions in the conversion from AND/OR forms to the Fixed Polarity Reed-Mull (FPRM) forms, a novel parallel tabular technique using the disjoint pro...
With the deficiency of the published tabular techniques based algorithms which can only handle small functions in the conversion from AND/OR forms to the Fixed Polarity Reed-Mull (FPRM) forms, a novel parallel tabular technique using the disjoint pro...
2014, 36(9): 2265-2271.
doi: 10.3724/SP.J.1146.2013.01693
Abstract:
Considering the issue of the large output voltage ripple of Pulse Skip Modulation (PSM) controlled switching DC-DC converter, a novel control technique named Pulse Skip with Adaptive Duty ratio (ADPS) is proposed in this paper. In ADPS converter with...
Considering the issue of the large output voltage ripple of Pulse Skip Modulation (PSM) controlled switching DC-DC converter, a novel control technique named Pulse Skip with Adaptive Duty ratio (ADPS) is proposed in this paper. In ADPS converter with...
2014, 36(9): 2278-2282.
doi: 10.3724/SP.J.1146.2013.00343
Abstract:
With the requirements of pulsed-triggered Flip-Flop and the threshold-arithmetic algebraic system, a novel universal structure of current-mode CMOS pulsed-triggered D Flip-Flop is proposed for binary and multi-valued current-mode CMOS pulsed-triggere...
With the requirements of pulsed-triggered Flip-Flop and the threshold-arithmetic algebraic system, a novel universal structure of current-mode CMOS pulsed-triggered D Flip-Flop is proposed for binary and multi-valued current-mode CMOS pulsed-triggere...
2014, 36(9): 2283-2286.
doi: 10.3724/SP.J.1146.2013.00881
Abstract:
Generally, sequential equivalence circuit checking is to expand the sequential circuit into combinational circuit for verification. While in two sequential circuit to be verified, flip-flops is correspondent, identifying and matching corresponding fl...
Generally, sequential equivalence circuit checking is to expand the sequential circuit into combinational circuit for verification. While in two sequential circuit to be verified, flip-flops is correspondent, identifying and matching corresponding fl...
2014, 36(9): 2272-2277.
doi: 10.3724/SP.J.1146.2013.01783
Abstract:
The effects of various coupling factors on resonant frequency and mode separation of magnetrons should be investigated to improve the stability of the magnetrons. The resonant frequency and the mode separation of the unstrapped magnetron with capacit...
The effects of various coupling factors on resonant frequency and mode separation of magnetrons should be investigated to improve the stability of the magnetrons. The resonant frequency and the mode separation of the unstrapped magnetron with capacit...
