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2013 Vol. 35, No. 2
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2013, 35(2): 255-260.
doi: 10.3724/SP.J.1146.2012.00862
Abstract:
Compressed Sensing (CS) technology paves the way for quick wideband spectrum detection and the WSN based on CS can provide Cognitive Radio (CR) users with the spectrum information. For the spectrum data detected in WSN, a two-dimensional compression ...
Compressed Sensing (CS) technology paves the way for quick wideband spectrum detection and the WSN based on CS can provide Cognitive Radio (CR) users with the spectrum information. For the spectrum data detected in WSN, a two-dimensional compression ...
2013, 35(2): 261-266.
doi: 10.3724/SP.J.1146.2012.00805
Abstract:
Because of the problem of the Minimum Mean Square Error with Successive Detection (MMSE-SD) algorithm with high computational complexity for OFDM systems in the presence of frequency and time double selective channels, an improved low-complexity MMSE...
Because of the problem of the Minimum Mean Square Error with Successive Detection (MMSE-SD) algorithm with high computational complexity for OFDM systems in the presence of frequency and time double selective channels, an improved low-complexity MMSE...
2013, 35(2): 267-272.
doi: 10.3724/SP.J.1146.2012.00787
Abstract:
Dynamic channel sharing policy is the key technology to improve the spectrum utilization in cognitive radio networks. First, the scenario is considered that several cognitive networks with finite user population coexist. Then, a three-dimensional Mar...
Dynamic channel sharing policy is the key technology to improve the spectrum utilization in cognitive radio networks. First, the scenario is considered that several cognitive networks with finite user population coexist. Then, a three-dimensional Mar...
2013, 35(2): 273-279.
doi: 10.3724/SP.J.1146.2012.00609
Abstract:
An improved multimodulus blind equalization algorithm for QAM signal is presented. The real part (imaginary part) information is used to construct cost function. Moreover, conjugate gradient algorithm is proposed to optimize the equalizer coefficient...
An improved multimodulus blind equalization algorithm for QAM signal is presented. The real part (imaginary part) information is used to construct cost function. Moreover, conjugate gradient algorithm is proposed to optimize the equalizer coefficient...
2013, 35(2): 280-284.
doi: 10.3724/SP.J.1146.2012.01186
Abstract:
Considering the issue of In-phase and Quadrature-phase (IQ) imbalances in MIMO-OFDM systems with sparse multipath channels, a method jointing IQ imbalance with sparse channel estimation is proposed. The time-domain model for joint IQ imbalance and sp...
Considering the issue of In-phase and Quadrature-phase (IQ) imbalances in MIMO-OFDM systems with sparse multipath channels, a method jointing IQ imbalance with sparse channel estimation is proposed. The time-domain model for joint IQ imbalance and sp...
2013, 35(2): 285-290.
doi: 10.3724/SP.J.1146.2012.00813
Abstract:
Introducing relay to wireless networks results in severer energy consumption. The circuit power consumption of devices can not be neglected in energy efficient problem. In this paper, Orthogonal Frequency Division Multiplexing (OFDM)-based frequency-...
Introducing relay to wireless networks results in severer energy consumption. The circuit power consumption of devices can not be neglected in energy efficient problem. In this paper, Orthogonal Frequency Division Multiplexing (OFDM)-based frequency-...
2013, 35(2): 291-296.
doi: 10.3724/SP.J.1146.2012.01085
Abstract:
Distributed power control algorithms for systems with hard SINR (Signal-to-Interference plus Noise Satio) constraints may diverge when infeasibility arises. Non-cooperative game-theoretic approach is applied to model the power control of the transmit...
Distributed power control algorithms for systems with hard SINR (Signal-to-Interference plus Noise Satio) constraints may diverge when infeasibility arises. Non-cooperative game-theoretic approach is applied to model the power control of the transmit...
2013, 35(2): 297-302.
doi: 10.3724/SP.J.1146.2012.00403
Abstract:
The construction of non-binary quasi-cyclic low-density parity-check codes are investigated. Important factors that influence the performance of non-binary LDPC codes are discussed in detail. The circle length and connectivity are taken into account ...
The construction of non-binary quasi-cyclic low-density parity-check codes are investigated. Important factors that influence the performance of non-binary LDPC codes are discussed in detail. The circle length and connectivity are taken into account ...
2013, 35(2): 303-309.
doi: 10.3724/SP.J.1146.2012.00725
Abstract:
An attack on f9 algorithm based on 4-round KASUMI is given with a single-key method. The meet-in -the-middle thought is applied into the attack and the based key set and the exhaustive key set are chosen. Then f9 algorithm is attacked with the linear...
An attack on f9 algorithm based on 4-round KASUMI is given with a single-key method. The meet-in -the-middle thought is applied into the attack and the based key set and the exhaustive key set are chosen. Then f9 algorithm is attacked with the linear...
2013, 35(2): 310-313.
doi: 10.3724/SP.J.1146.2012.00629
Abstract:
In order to solve the data integrality issue in the cloud computing, a new interactive integrality checking scheme is proposed. This scheme firstly constructs a perfect cartesian message authentication function type I and its equivalent function, the...
In order to solve the data integrality issue in the cloud computing, a new interactive integrality checking scheme is proposed. This scheme firstly constructs a perfect cartesian message authentication function type I and its equivalent function, the...
2013, 35(2): 314-319.
doi: 10.3724/SP.J.1146.2012.00984
Abstract:
The restriction of the network performance such as the processing delay of control plane, the utilization probability and the burst collision probability on the assembling algorithm is analyzed and studied. The results verify that the data plane is m...
The restriction of the network performance such as the processing delay of control plane, the utilization probability and the burst collision probability on the assembling algorithm is analyzed and studied. The results verify that the data plane is m...
2013, 35(2): 320-327.
doi: 10.3724/SP.J.1146.2012.00795
Abstract:
Because the resources in cognitive wireless networks are high dynamic, there must be a special transmission control mechanism to coordinate the transmission of each node. A novel backpressure transmission control mechanism is proposed to supply an ef...
Because the resources in cognitive wireless networks are high dynamic, there must be a special transmission control mechanism to coordinate the transmission of each node. A novel backpressure transmission control mechanism is proposed to supply an ef...
2013, 35(2): 328-334.
doi: 10.3724/SP.J.1146.2012.00723
Abstract:
In order to remove the vast information redundancy in dense Wireless Sensor Networks (WSN), a distributed source coding algorithm for clustering WSN is proposed. The algorithm uses the correlation among the sources to define the coding sequence and t...
In order to remove the vast information redundancy in dense Wireless Sensor Networks (WSN), a distributed source coding algorithm for clustering WSN is proposed. The algorithm uses the correlation among the sources to define the coding sequence and t...
2013, 35(2): 335-340.
doi: 10.3724/SP.J.1146.2012.00854
Abstract:
An instruction set extension for Counter mode with Cipher block chaining Message authentication code protocol using Advanced Encryption Standard algorithm (AES-CCM) protocol in IEEE802.15.4 is presented based on AES fast algorithms and NiosII process...
An instruction set extension for Counter mode with Cipher block chaining Message authentication code protocol using Advanced Encryption Standard algorithm (AES-CCM) protocol in IEEE802.15.4 is presented based on AES fast algorithms and NiosII process...
2013, 35(2): 341-348.
doi: 10.3724/SP.J.1146.2012.00654
Abstract:
A low latency router architecture based Pre-Allocated Path Router (PAPR) is proposed for the Network-on-Chip (NoC). The advanced-routing algorithm and pre-allocated path are implemented to reduce the depth of the pipeline. The pre-allocated virtual c...
A low latency router architecture based Pre-Allocated Path Router (PAPR) is proposed for the Network-on-Chip (NoC). The advanced-routing algorithm and pre-allocated path are implemented to reduce the depth of the pipeline. The pre-allocated virtual c...
2013, 35(2): 349-354.
doi: 10.3724/SP.J.1146.2012.00946
Abstract:
Current Quality of Service (QoS)-based service selection approaches pay little attention to personal properties and characteristics of service requesters. However, Collaborative Filtering (CF)-based service selection approaches fail to consider the t...
Current Quality of Service (QoS)-based service selection approaches pay little attention to personal properties and characteristics of service requesters. However, Collaborative Filtering (CF)-based service selection approaches fail to consider the t...
2013, 35(2): 355-360.
doi: 10.3724/SP.J.1146.2012.00711
Abstract:
As mathematical fundamental of stochastic computing system, transfer function of variance and expected value based on Bernoulli distribution is not accurate and general in system analysis. A novel mathematic method, hypergeometric decomposition is pr...
As mathematical fundamental of stochastic computing system, transfer function of variance and expected value based on Bernoulli distribution is not accurate and general in system analysis. A novel mathematic method, hypergeometric decomposition is pr...
2013, 35(2): 361-367.
doi: 10.3724/SP.J.1146.2012.00790
Abstract:
A novel hybrid multi-valued Discrete Particle Swarm Optimization (DPSO) algorithm for Mixed- Polarity Reed-Muller (MPRM) minimization of Boolean function system is proposed. To solve the problem of diversity loss, improve the optimized result and bal...
A novel hybrid multi-valued Discrete Particle Swarm Optimization (DPSO) algorithm for Mixed- Polarity Reed-Muller (MPRM) minimization of Boolean function system is proposed. To solve the problem of diversity loss, improve the optimized result and bal...
2013, 35(2): 368-375.
doi: 10.3724/SP.J.1146.2012.00897
Abstract:
An analytic solution to the Non-Negative Eigenvalue Decomposition (NNED) in the non-reflection symmetry case is derived for the first time, which is named as NNED with non-reflection symmetry. It is applied to the Freeman decomposition, and then a Fr...
An analytic solution to the Non-Negative Eigenvalue Decomposition (NNED) in the non-reflection symmetry case is derived for the first time, which is named as NNED with non-reflection symmetry. It is applied to the Freeman decomposition, and then a Fr...
2013, 35(2): 376-380.
doi: 10.3724/SP.J.1146.2012.00840
Abstract:
The problem of detecting a weak target in dynamic clutter scenarios is analyzed with a polarimetric high-resolution radar. The heavy-tailed clutter is modeled by the compound-Gaussian process with inverse Gamma distributed texture. With training data...
The problem of detecting a weak target in dynamic clutter scenarios is analyzed with a polarimetric high-resolution radar. The heavy-tailed clutter is modeled by the compound-Gaussian process with inverse Gamma distributed texture. With training data...
2013, 35(2): 381-387.
doi: 10.3724/SP.J.1146.2012.00843
Abstract:
Detecting high-speed multi-target is affected by range migration, Doppler spread and velocity ambiguity in the linear frequency modulation pulse compression radar. In order to solve these problems, the joint frequency-domain scaling pulse compression...
Detecting high-speed multi-target is affected by range migration, Doppler spread and velocity ambiguity in the linear frequency modulation pulse compression radar. In order to solve these problems, the joint frequency-domain scaling pulse compression...
2013, 35(2): 388-393.
doi: 10.3724/SP.J.1146.2012.00238
Abstract:
The sparse signal reconstruction with Compressed Sensing (CS) is actually solving a system of underdetermined linear equations within the signal sparsity, of which one focus is to reduce recovery errors by the type of iteratively weightedLp(001,p=2) ...
The sparse signal reconstruction with Compressed Sensing (CS) is actually solving a system of underdetermined linear equations within the signal sparsity, of which one focus is to reduce recovery errors by the type of iteratively weightedLp(001,p=2) ...
2013, 35(2): 394-400.
doi: 10.3724/SP.J.1146.2012.00920
Abstract:
Due to the ambiguities in Direction Of Arrival (DOA) estimation for an interferometric array VHF radar, a novel ambiguity-resolution algorithm based on matrix completion is proposed. The algorithm with additional elements for ambiguity resolution in ...
Due to the ambiguities in Direction Of Arrival (DOA) estimation for an interferometric array VHF radar, a novel ambiguity-resolution algorithm based on matrix completion is proposed. The algorithm with additional elements for ambiguity resolution in ...
2013, 35(2): 401-405.
doi: 10.3724/SP.J.1146.2012.00846
Abstract:
Skywave over-the-horizon radar usually detects targets over the sea surface using Range-Doppler (RD) processing. RD processing can obtain the slant range and Doppler frequency of the target, but the altitude can not be derived. An algorithm based on ...
Skywave over-the-horizon radar usually detects targets over the sea surface using Range-Doppler (RD) processing. RD processing can obtain the slant range and Doppler frequency of the target, but the altitude can not be derived. An algorithm based on ...
2013, 35(2): 406-412.
doi: 10.3724/SP.J.1146.2012.00567
Abstract:
Integration of radar and communication on the electronic war platform is an effective method to reduce their volume, electromagnetic interference. In allusion to mutual interference and incompatible issue between suitable wareforms design of integrat...
Integration of radar and communication on the electronic war platform is an effective method to reduce their volume, electromagnetic interference. In allusion to mutual interference and incompatible issue between suitable wareforms design of integrat...
2013, 35(2): 413-418.
doi: 10.3724/SP.J.1146.2012.01060
Abstract:
In order to analyze the micro-movement component of the ballistic targets at the middle trajectory, the accurate estimation and compensation of the high-speed translational component from the radar echo are needed. The ultra-wideband signal model und...
In order to analyze the micro-movement component of the ballistic targets at the middle trajectory, the accurate estimation and compensation of the high-speed translational component from the radar echo are needed. The ultra-wideband signal model und...
2013, 35(2): 419-425.
doi: 10.3724/SP.J.1146.2012.00780
Abstract:
The electromagnetic scattering mechanism of radar target in high frequency domain can be characterized exactly by Geometrical Theory of Diffraction (GTD) model. In this paper, a novel parameter estimating method for 2D GTD model is proposed based on ...
The electromagnetic scattering mechanism of radar target in high frequency domain can be characterized exactly by Geometrical Theory of Diffraction (GTD) model. In this paper, a novel parameter estimating method for 2D GTD model is proposed based on ...
2013, 35(2): 426-431.
doi: 10.3724/SP.J.1146.2012.00879
Abstract:
The ship radiated noise is provided with a stable part of line-spectrum, and the underwater target can be effectively detected by using the line-spectrum signal. The technology of Passive Synthetic Aperture Sonar (PSAS), processing for space gain exc...
The ship radiated noise is provided with a stable part of line-spectrum, and the underwater target can be effectively detected by using the line-spectrum signal. The technology of Passive Synthetic Aperture Sonar (PSAS), processing for space gain exc...
2013, 35(2): 432-437.
doi: 10.3724/SP.J.1146.2012.00781
Abstract:
Effective channel order estimation is a critical step of blind channel identification. A blind channel effective order estimation algorithm based on SubSpace Channel Matrix Recursion (SS-CMR) is proposed. On the basis of the special structure of Q ma...
Effective channel order estimation is a critical step of blind channel identification. A blind channel effective order estimation algorithm based on SubSpace Channel Matrix Recursion (SS-CMR) is proposed. On the basis of the special structure of Q ma...
2013, 35(2): 438-444.
doi: 10.3724/SP.J.1146.2012.00517
Abstract:
A new adaptive digital beamforming in receiving end based on compressed sensing is proposed. In the case of sparse array antenna, receiving signal from absence elements can be reconstructed by using the theory of compressed sensing. Adaptive digital ...
A new adaptive digital beamforming in receiving end based on compressed sensing is proposed. In the case of sparse array antenna, receiving signal from absence elements can be reconstructed by using the theory of compressed sensing. Adaptive digital ...
2013, 35(2): 445-450.
doi: 10.3724/SP.J.1146.2012.00598
Abstract:
The lowest compressive sampling rate for non-uniform block sparse signals and the decay property of restricted isometry constant of measure matrix is theoretically analyzed. A blind recovery algorithm without knowing the order and distribution of blo...
The lowest compressive sampling rate for non-uniform block sparse signals and the decay property of restricted isometry constant of measure matrix is theoretically analyzed. A blind recovery algorithm without knowing the order and distribution of blo...
2013, 35(2): 451-456.
doi: 10.3724/SP.J.1146.2012.01087
Abstract:
This paper presents a novel integro-differential equation approach for removing Poisson noise. The classical Total Variational (TV) minimization model is discussed, and then the novel hierarchical multiscale variational image representation model is ...
This paper presents a novel integro-differential equation approach for removing Poisson noise. The classical Total Variational (TV) minimization model is discussed, and then the novel hierarchical multiscale variational image representation model is ...
A Transformation of Basic Probability Assignment to Probability Based on Conservation of Information
2013, 35(2): 457-462.
doi: 10.3724/SP.J.1146.2012.00208
Abstract:
The existing transform methods of basic probability assignment to probability are widespread lack?of?objective criteria and with much subjectivity. A linear weighted probability conversion method is presented. First, the?normalized priori information...
The existing transform methods of basic probability assignment to probability are widespread lack?of?objective criteria and with much subjectivity. A linear weighted probability conversion method is presented. First, the?normalized priori information...
2013, 35(2): 463-467.
doi: 10.3724/SP.J.1146.2012.00601
Abstract:
A novel supervised linear method based on Locality Preserving Projection (LPP) of reducing dimensionality is proposed for face recognition. In this study, the nearest neighbor graph of LPP is split into within-class graph and between-class graph acco...
A novel supervised linear method based on Locality Preserving Projection (LPP) of reducing dimensionality is proposed for face recognition. In this study, the nearest neighbor graph of LPP is split into within-class graph and between-class graph acco...
2013, 35(2): 468-473.
doi: 10.3724/SP.J.1146.2012.00791
Abstract:
Transformation electromagnetics, which has become a hotspot in the research areas recently, provides a new way to manipulate electromagnetic waves with coordinate transformation method. Combined with metamaterials, several new kinds of electromagneti...
Transformation electromagnetics, which has become a hotspot in the research areas recently, provides a new way to manipulate electromagnetic waves with coordinate transformation method. Combined with metamaterials, several new kinds of electromagneti...
2013, 35(2): 484-488.
doi: 10.3724/SP.J.1146.2012.00695
Abstract:
In order to assess multi distorted types of image quality effectively, a new no reference image quality assessment method is proposed, which uses General Regression Neural Network (GRNN) model to predict image quality score by learning phase congruen...
In order to assess multi distorted types of image quality effectively, a new no reference image quality assessment method is proposed, which uses General Regression Neural Network (GRNN) model to predict image quality score by learning phase congruen...
2013, 35(2): 489-493.
doi: 10.3724/SP.J.1146.2012.00812
Abstract:
A hyper-spectral image compression algorithm based on nonnegative tensor factorizations is proposed in this paper. First, every band of hyper-spectral images is decomposed by 2D 5/3 discrete wavelet transform to reduce the space redundancy of hyper-s...
A hyper-spectral image compression algorithm based on nonnegative tensor factorizations is proposed in this paper. First, every band of hyper-spectral images is decomposed by 2D 5/3 discrete wavelet transform to reduce the space redundancy of hyper-s...
2013, 35(2): 494-498.
doi: 10.3724/SP.J.1146.2012.00648
Abstract:
In order to improve the axial resolution and satisfy the contrast resolution of medical ultrasound imaging, a predistorted Linear Frequency Modulation (LFM) coded excitation new method based on amplitude weighting is proposed. Combining the amplitude...
In order to improve the axial resolution and satisfy the contrast resolution of medical ultrasound imaging, a predistorted Linear Frequency Modulation (LFM) coded excitation new method based on amplitude weighting is proposed. Combining the amplitude...
2013, 35(2): 499-503.
doi: 10.3724/SP.J.1146.2012.00869
Abstract:
A new Gray map is defined fromR=F2+uF2+u2F2+u3F2 toF42 with u4=0. It is proved that the Gray image of a linear (1+u+u2+u3)-cyclic code of lengthn over R is a distance-invariant linear cyclic code of length4n over F2. Further more, the generator polyn...
A new Gray map is defined fromR=F2+uF2+u2F2+u3F2 toF42 with u4=0. It is proved that the Gray image of a linear (1+u+u2+u3)-cyclic code of lengthn over R is a distance-invariant linear cyclic code of length4n over F2. Further more, the generator polyn...
2013, 35(2): 504-508.
doi: 10.3724/SP.J.1146.2012.00870
Abstract:
A resistanceR*out is in parallel with the output gap of the cavity by settingdiscrete portsin the three- dimensional microwave simulation software, the relationship between the resistance R*outand the gap-impedance real part in the klystron overall d...
A resistanceR*out is in parallel with the output gap of the cavity by settingdiscrete portsin the three- dimensional microwave simulation software, the relationship between the resistance R*outand the gap-impedance real part in the klystron overall d...
2013, 35(2): 474-483.
doi: 10.3724/SP.J.1146.2012.00931
Abstract:
Recently, a great number of interests have been attracted to perceptual video coding. In this paper, perceptual video coding and especially perceptual three-dimensional video coding are reviewed. Firstly, single-view video coding is analyzed by utili...
Recently, a great number of interests have been attracted to perceptual video coding. In this paper, perceptual video coding and especially perceptual three-dimensional video coding are reviewed. Firstly, single-view video coding is analyzed by utili...
