Email alert
2012 Vol. 34, No. 12
Display Method:
2012, 34(12): 2795-2801.
doi: 10.3724/SP.J.1146.2012.00863
Abstract:
In order to achieve sparse representation and capture more geometrical features of visual measuring image, a predicted method of edge information based on gray gradient direction is proposed first. Due to the precise positioning of edge, the method o...
In order to achieve sparse representation and capture more geometrical features of visual measuring image, a predicted method of edge information based on gray gradient direction is proposed first. Due to the precise positioning of edge, the method o...
2012, 34(12): 2802-2808.
doi: 10.3724/SP.J.1146.2012.00450
Abstract:
A new efficient technique using the compatible hardware framework to realize the integer 5/3 wavelet transform and 9/7 wavelet transform is proposed. The bit depth of the temp coefficients in the wavelet transform is based on the Bounded Input Bounde...
A new efficient technique using the compatible hardware framework to realize the integer 5/3 wavelet transform and 9/7 wavelet transform is proposed. The bit depth of the temp coefficients in the wavelet transform is based on the Bounded Input Bounde...
2012, 34(12): 2809-2815.
doi: 10.3724/SP.J.1146.2012.00727
Abstract:
Traditional video error concealment techniques perform poorly in handling loss MacroBlocks(MBs) with intense or complicated motion. Based on the statistic analysis of stereoscopic video coding prediction mode, this paper classifies the loss MBs into ...
Traditional video error concealment techniques perform poorly in handling loss MacroBlocks(MBs) with intense or complicated motion. Based on the statistic analysis of stereoscopic video coding prediction mode, this paper classifies the loss MBs into ...
2012, 34(12): 2816-2822.
doi: 10.3724/SP.J.1146.2012.00583
Abstract:
Interference is one of the key performance metrics in the design of cellular networks; Interference Alignment (IA) can eliminate the impact of interference and improve the capacity performance of cellular networks. In classic IA algorithms for downli...
Interference is one of the key performance metrics in the design of cellular networks; Interference Alignment (IA) can eliminate the impact of interference and improve the capacity performance of cellular networks. In classic IA algorithms for downli...
2012, 34(12): 2823-2829.
doi: 10.3724/SP.J.1146.2012.00744
Abstract:
In Long Term Evolution (LTE) heterogeneous networks, the gap between the power of Macro base station and Pico base station makes some users access to Macrocell even if they are closer to Picocell. Under this circumstance, Picocell may suffer severe u...
In Long Term Evolution (LTE) heterogeneous networks, the gap between the power of Macro base station and Pico base station makes some users access to Macrocell even if they are closer to Picocell. Under this circumstance, Picocell may suffer severe u...
Research on Power Allocation Scheme Based on Water-filling Algorithm in Cooperative Diversity System
2012, 34(12): 2830-2836.
doi: 10.3724/SP.J.1146.2012.00682
Abstract:
In order to increase the capacity of cooperative diversity system, a novel power allocation scheme based on water-filling algorithm is proposed under the background of multiple-relay cooperation. First, a novel node index mapping scheme is provided t...
In order to increase the capacity of cooperative diversity system, a novel power allocation scheme based on water-filling algorithm is proposed under the background of multiple-relay cooperation. First, a novel node index mapping scheme is provided t...
2012, 34(12): 2837-2842.
doi: 10.3724/SP.J.1146.2012.00434
Abstract:
Based on the property that the equivalent binary block codes of Reed-Solomon (RS) codes are quasi- cyclic codes, a new blind recognition method of RS codes is proposed. The intercepted binary sequence is regarded as linear codes over a ring. Then, th...
Based on the property that the equivalent binary block codes of Reed-Solomon (RS) codes are quasi- cyclic codes, a new blind recognition method of RS codes is proposed. The intercepted binary sequence is regarded as linear codes over a ring. Then, th...
2012, 34(12): 2843-2849.
doi: 10.3724/SP.J.1146.2012.00326
Abstract:
The resource allocation issue in multi-services OFDMA systems is formulated by taking Quality of Service (QoS) requirement, data arrival process, system constraints into account. The relations among the traffic rate constraint, latency constraint and...
The resource allocation issue in multi-services OFDMA systems is formulated by taking Quality of Service (QoS) requirement, data arrival process, system constraints into account. The relations among the traffic rate constraint, latency constraint and...
2012, 34(12): 2850-2854.
doi: 10.3724/SP.J.1146.2012.00670
Abstract:
In multiple-input multiple-output interference channels, Interference alignment suffers from performance loss at low Signal-to-Noise Ratio (SNR) due to it neglecting the desired signal power. An algorithm is proposed that iteratively minimizes weight...
In multiple-input multiple-output interference channels, Interference alignment suffers from performance loss at low Signal-to-Noise Ratio (SNR) due to it neglecting the desired signal power. An algorithm is proposed that iteratively minimizes weight...
2012, 34(12): 2855-2861.
doi: 10.3724/SP.J.1146.2012.00619
Abstract:
High data rate communication over limited bandwidth or multi-path channels suffers severe distortion due to the Inter-Symbol Interference (ISI). Constant Modulus blind equalization Algorithms (CMA) are widely used for mitigating this phenomenon. But ...
High data rate communication over limited bandwidth or multi-path channels suffers severe distortion due to the Inter-Symbol Interference (ISI). Constant Modulus blind equalization Algorithms (CMA) are widely used for mitigating this phenomenon. But ...
2012, 34(12): 2862-2868.
doi: 10.3724/SP.J.1146.2012.00816
Abstract:
The multipath effects of the HF channel make the BER of non-sinusodial HF communication based on Prolate Spheroidal Wave Function (PSWF) increasing. An new equalizer scheme is proposed on the base of analysising the factors reducing the quality of de...
The multipath effects of the HF channel make the BER of non-sinusodial HF communication based on Prolate Spheroidal Wave Function (PSWF) increasing. An new equalizer scheme is proposed on the base of analysising the factors reducing the quality of de...
2012, 34(12): 2869-2875.
doi: 10.3724/SP.J.1146.2012.00633
Abstract:
To separate the Paired Carrier Multiple Access (PCMA) signals, a joint linear Minimum Mean-Square Error (MMSE) equalization and soft decoding iteration demodulation/decoding algorithm is proposed in this paper, which is based on the realization of th...
To separate the Paired Carrier Multiple Access (PCMA) signals, a joint linear Minimum Mean-Square Error (MMSE) equalization and soft decoding iteration demodulation/decoding algorithm is proposed in this paper, which is based on the realization of th...
2012, 34(12): 2876-2880.
doi: 10.3724/SP.J.1146.2012.00187
Abstract:
A construction of multiple Zero Correlation Zone (ZCZ) sequence sets is presented. The new ZCZ sequence set consists of several subsets, each subset is a ZCZ sequence set by itself and the cross-correlation function between sequences belonging to dif...
A construction of multiple Zero Correlation Zone (ZCZ) sequence sets is presented. The new ZCZ sequence set consists of several subsets, each subset is a ZCZ sequence set by itself and the cross-correlation function between sequences belonging to dif...
2012, 34(12): 2881-2884.
doi: 10.3724/SP.J.1146.2012.00804
Abstract:
The construction of the generalized cyclotomic sequence with lengthpn for a prime p and a positive integern given by Liu Fang et al. (2010) is generalized in this paper. The linear complexity and the autocorrelation values of the new defined sequence...
The construction of the generalized cyclotomic sequence with lengthpn for a prime p and a positive integern given by Liu Fang et al. (2010) is generalized in this paper. The linear complexity and the autocorrelation values of the new defined sequence...
2012, 34(12): 2885-2890.
doi: 10.3724/SP.J.1146.2012.00300
Abstract:
Considering the information loss during sharing multiple secrets, a definition of (n, n) lossless multi- secret sharing visual cryptography is proposed. In addition, based on ring shares, an (n, n) multi-secret visual cryptography scheme, which share...
Considering the information loss during sharing multiple secrets, a definition of (n, n) lossless multi- secret sharing visual cryptography is proposed. In addition, based on ring shares, an (n, n) multi-secret visual cryptography scheme, which share...
2012, 34(12): 2891-2897.
doi: 10.3724/SP.J.1146.2012.00730
Abstract:
An Efficient Asynchronous Probing Scheme (EAPS) is proposed to solve issues of the low discovery radio and high probing energy cost for Delay Tolerant Mobility Sensor Network (DTMSN). By analyzing nodes contact properties in the Random Way-Point (RWP...
An Efficient Asynchronous Probing Scheme (EAPS) is proposed to solve issues of the low discovery radio and high probing energy cost for Delay Tolerant Mobility Sensor Network (DTMSN). By analyzing nodes contact properties in the Random Way-Point (RWP...
2012, 34(12): 2898-2904.
doi: 10.3724/SP.J.1146.2012.00101
Abstract:
Virtual network service persistence will be impacted by substrate node or link failure, so how to achieve the reliable mapping of virtual network is recently an important problem to be solved. In this paper, a virtual network mapping problem is model...
Virtual network service persistence will be impacted by substrate node or link failure, so how to achieve the reliable mapping of virtual network is recently an important problem to be solved. In this paper, a virtual network mapping problem is model...
2012, 34(12): 2905-2912.
doi: 10.3724/SP.J.1146.2012.00924
Abstract:
In order to reduce the probe cost and improve the accuracy of the inference algorithm of the link loss rate, a novel link loss rate inference algorithm is proposed based on minimal cover set. This algorithm reduces the number of the end-to-end paths ...
In order to reduce the probe cost and improve the accuracy of the inference algorithm of the link loss rate, a novel link loss rate inference algorithm is proposed based on minimal cover set. This algorithm reduces the number of the end-to-end paths ...
2012, 34(12): 2913-2919.
doi: 10.3724/SP.J.1146.2012.00562
Abstract:
Multi-channel SAR in azimuth, which can be used to suppress the Doppler ambiguity to get the High-Resolution Wide-Swath (HRWS) SAR images, suffers from the amplitude and phase mismatch among the channels, as well as the position measurement inaccurac...
Multi-channel SAR in azimuth, which can be used to suppress the Doppler ambiguity to get the High-Resolution Wide-Swath (HRWS) SAR images, suffers from the amplitude and phase mismatch among the channels, as well as the position measurement inaccurac...
2012, 34(12): 2920-2926.
doi: 10.3724/SP.J.1146.2012.00496
Abstract:
It is valuable to extract multi-aspect SAR feature for radar object recognition. The Gapped-data Amplitude and Phase EStimation (GAPES) are modified to extract multi-aspect SAR feature. Multi-aspect SAR Feature Extraction is a parameter estimation is...
It is valuable to extract multi-aspect SAR feature for radar object recognition. The Gapped-data Amplitude and Phase EStimation (GAPES) are modified to extract multi-aspect SAR feature. Multi-aspect SAR Feature Extraction is a parameter estimation is...
2012, 34(12): 2927-2933.
doi: 10.3724/SP.J.1146.2012.00655
Abstract:
In the ISAR imaging of targets with rotating parts, the image of the targets main body may be shadowed by the micro-Doppler effect induced by the rotating parts. To solve this problem, an algorithm utilizing complex local mean decomposition is resear...
In the ISAR imaging of targets with rotating parts, the image of the targets main body may be shadowed by the micro-Doppler effect induced by the rotating parts. To solve this problem, an algorithm utilizing complex local mean decomposition is resear...
2012, 34(12): 2934-2941.
doi: 10.3724/SP.J.1146.2012.00720
Abstract:
In ultra-wideband radar imaging applications, there exist non-orthogonal sidelobes which would affect the image. The relationship between point spread function and spatial spectrum supporting region is analyzed in this paper. To improve the image qua...
In ultra-wideband radar imaging applications, there exist non-orthogonal sidelobes which would affect the image. The relationship between point spread function and spatial spectrum supporting region is analyzed in this paper. To improve the image qua...
2012, 34(12): 2942-2947.
doi: 10.3724/SP.J.1146.2012.00718
Abstract:
A novel joint 4-Dimensional (4-D) angle and Doppler frequency estimation algorithm is proposed for bistatic MIMO radar with L-shaped arrays. The DOA matrix method is used to construct the date model and then the close-form solution of the two dimensi...
A novel joint 4-Dimensional (4-D) angle and Doppler frequency estimation algorithm is proposed for bistatic MIMO radar with L-shaped arrays. The DOA matrix method is used to construct the date model and then the close-form solution of the two dimensi...
2012, 34(12): 2948-2953.
doi: 10.3724/SP.J.1146.2012.00642
Abstract:
Both the spatial property and the temporal property should be considered in MIMO radar waveform design. It is a challenge to reduce the temporal sidelobe efficiently by designing the waveform in a single pulse, when the spatial property should be gua...
Both the spatial property and the temporal property should be considered in MIMO radar waveform design. It is a challenge to reduce the temporal sidelobe efficiently by designing the waveform in a single pulse, when the spatial property should be gua...
2012, 34(12): 2954-2958.
doi: 10.3724/SP.J.1146.2012.00717
Abstract:
To deal with low sidelobe transmit pattern design problem for MIMO radar, a new minimum peak-sidelobe or integrated-sidelobe transmit pattern optimization algorithm is proposed in this paper. Due to the optimization problem of minimizing peak-sidelob...
To deal with low sidelobe transmit pattern design problem for MIMO radar, a new minimum peak-sidelobe or integrated-sidelobe transmit pattern optimization algorithm is proposed in this paper. Due to the optimization problem of minimizing peak-sidelob...
2012, 34(12): 2959-2965.
doi: 10.3724/SP.J.1146.2012.00122
Abstract:
There exist bound gravity-capillary waves that move at the speed of the dominate waves on the ocean surface, apart from free gravity-capillary waves that satisfy the linear dispersion relation. Based on the Bound\Free wave composite surface model (BF...
There exist bound gravity-capillary waves that move at the speed of the dominate waves on the ocean surface, apart from free gravity-capillary waves that satisfy the linear dispersion relation. Based on the Bound\Free wave composite surface model (BF...
2012, 34(12): 2966-2971.
doi: 10.3724/SP.J.1146.2012.00437
Abstract:
The issue of angle estimation in Multiple-Input Multiple-Output (MIMO) radar is discussed without knowledge of waveforms correlated matrix, and an improved MUltiple SIgnal Classification (MUSIC) algorithm is proposed for Direction Of Arrival (DOA) es...
The issue of angle estimation in Multiple-Input Multiple-Output (MIMO) radar is discussed without knowledge of waveforms correlated matrix, and an improved MUltiple SIgnal Classification (MUSIC) algorithm is proposed for Direction Of Arrival (DOA) es...
2012, 34(12): 2972-2977.
doi: 10.3724/SP.J.1146.2012.00656
Abstract:
Based on the equivalent scatter center model, the relationship between the micro-Doppler frequencies and the motion parameters of the space cone target with precession or nutation is analyzed. Due to the complicated form of the micro-Doppler frequenc...
Based on the equivalent scatter center model, the relationship between the micro-Doppler frequencies and the motion parameters of the space cone target with precession or nutation is analyzed. Due to the complicated form of the micro-Doppler frequenc...
2012, 34(12): 2978-2984.
doi: 10.3724/SP.J.1146.2012.00766
Abstract:
An interference suppression method based on joint fractional Fourier domain and time domain is proposed in this paper, to solve the problem of co-channel interference caused by homo-type radars working in ship formation. The interferences with differ...
An interference suppression method based on joint fractional Fourier domain and time domain is proposed in this paper, to solve the problem of co-channel interference caused by homo-type radars working in ship formation. The interferences with differ...
2012, 34(12): 2985-2991.
doi: 10.3724/SP.J.1146.2012.00615
Abstract:
Traditional object extraction methods encounter new challenges as the spatial resolution of remote sensing image increases. For the purpose of building extraction in that circumstance, a new method combining both attribute filtering and context analy...
Traditional object extraction methods encounter new challenges as the spatial resolution of remote sensing image increases. For the purpose of building extraction in that circumstance, a new method combining both attribute filtering and context analy...
2012, 34(12): 2992-2998.
doi: 10.3724/SP.J.1146.2012.00750
Abstract:
The information of targets scale is an important factor for small target detection in two-dimensional image. This paper presents a small target detection method based on second order directional derivative scale-space, chooses directly the interest t...
The information of targets scale is an important factor for small target detection in two-dimensional image. This paper presents a small target detection method based on second order directional derivative scale-space, chooses directly the interest t...
2012, 34(12): 2999-3005.
doi: 10.3724/SP.J.1146.2012.00160
Abstract:
A novel hybrid higher order Finite Difference Time Domain (FDTD) (2,4) and Modified Nodal Analysis (MNA) method for transient response of transmission line network is proposed. By constructing a hybrid single-port network model, the distributed param...
A novel hybrid higher order Finite Difference Time Domain (FDTD) (2,4) and Modified Nodal Analysis (MNA) method for transient response of transmission line network is proposed. By constructing a hybrid single-port network model, the distributed param...
2012, 34(12): 3006-3012.
doi: 10.3724/SP.J.1146.2012.00504
Abstract:
Because of existing Compressed-Sensing (CS) reconstruction algorithms have high computing complexity, a fast algorithm based on best linear estimate is proposed. It adaptively measures image data with a block-by-block manner at encoder, and reconstru...
Because of existing Compressed-Sensing (CS) reconstruction algorithms have high computing complexity, a fast algorithm based on best linear estimate is proposed. It adaptively measures image data with a block-by-block manner at encoder, and reconstru...
2012, 34(12): 3013-3020.
doi: 10.3724/SP.J.1146.2012.00652
Abstract:
High resolution terrain Digital Elevation Model (DEM) and orthophoto bring severely load including data storage, schedule and real-time rendering, etc.. A high performance terrain data compression method is proposed based on lifting wavelet transform...
High resolution terrain Digital Elevation Model (DEM) and orthophoto bring severely load including data storage, schedule and real-time rendering, etc.. A high performance terrain data compression method is proposed based on lifting wavelet transform...
2012, 34(12): 3021-3026.
doi: 10.3724/SP.J.1146.2012.00779
Abstract:
Compressive sensing theory is efficient to sampling and reconstruction for sparse signal. In this paper, acoustic signals carried less information are sampled deploying compressive sensing and a new impact-acoustics non-destructive test method is pro...
Compressive sensing theory is efficient to sampling and reconstruction for sparse signal. In this paper, acoustic signals carried less information are sampled deploying compressive sensing and a new impact-acoustics non-destructive test method is pro...
2012, 34(12): 3027-3033.
doi: 10.3724/SP.J.1146.2012.00557
Abstract:
In order to overcome the problem that the noise suppression ability of traditional small microphone arrays speech enhancement algorithm is limited, this paper proposes coherence spectral estimation based on the variable coefficients noise filter algo...
In order to overcome the problem that the noise suppression ability of traditional small microphone arrays speech enhancement algorithm is limited, this paper proposes coherence spectral estimation based on the variable coefficients noise filter algo...
2012, 34(12): 3034-3039.
doi: 10.3724/SP.J.1146.2012.00639
Abstract:
Due to the local ambiguities of images containing repetitive-patterns, it is difficult to match feature points reliably only by comparing similarity between local descriptors even if the disparity of viewpoint is not very large. Thus, a novel represe...
Due to the local ambiguities of images containing repetitive-patterns, it is difficult to match feature points reliably only by comparing similarity between local descriptors even if the disparity of viewpoint is not very large. Thus, a novel represe...
2012, 34(12): 3040-3045.
doi: 10.3724/SP.J.1146.2012.00701
Abstract:
A novel algorithm for incomplete fingerprint recognition is proposed in this paper using fusion features and pattern entropy based similarity measure. Because of incomplete fingerprints unique characteristic of information loss, the recognition perfo...
A novel algorithm for incomplete fingerprint recognition is proposed in this paper using fusion features and pattern entropy based similarity measure. Because of incomplete fingerprints unique characteristic of information loss, the recognition perfo...
2012, 34(12): 3046-3050.
doi: 10.3724/SP.J.1146.2012.00535
Abstract:
Video forgeries can be effectively detected by discriminating double MPEG compression, in order to authenticate the truism and reliability of digital videos. Through delving into the fitting results of the first digit distribution of Alternating Curr...
Video forgeries can be effectively detected by discriminating double MPEG compression, in order to authenticate the truism and reliability of digital videos. Through delving into the fitting results of the first digit distribution of Alternating Curr...
