Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454185
Weilong Liang, Y. Jiao, Li Zhang
A novel approach based on the modified differential evolution (MDE) algorithm is proposed to suppress the sideband radiation of the time-modulated arrays (TMA). In the modified differential evolution algorithm, an adaptive adjustment strategy of parameter CR is used to improve the population diversity and to avoid frapping in local optima. Benchmark functions have been provided to verify the MDE algorithm. By optimizing the static excitation amplitudes as well as the switch-on time sequences through the MDE, the sideband level and sidelobe level of a time modulated linear array can be reduced significantly. The approach is illustrated through a 32-element linear array.
{"title":"Sideband suppression in time-modulated linear array by modified differential evolution algorithm","authors":"Weilong Liang, Y. Jiao, Li Zhang","doi":"10.1109/ICCPS.2015.7454185","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454185","url":null,"abstract":"A novel approach based on the modified differential evolution (MDE) algorithm is proposed to suppress the sideband radiation of the time-modulated arrays (TMA). In the modified differential evolution algorithm, an adaptive adjustment strategy of parameter CR is used to improve the population diversity and to avoid frapping in local optima. Benchmark functions have been provided to verify the MDE algorithm. By optimizing the static excitation amplitudes as well as the switch-on time sequences through the MDE, the sideband level and sidelobe level of a time modulated linear array can be reduced significantly. The approach is illustrated through a 32-element linear array.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"745 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117011342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454130
Weiping Hu, Rifeng Wang
Facial aging characteristics synthesis is useful for face recognition system. After analyzing characteristics of human face images, image enhancement technology was used to strengthen the details of high frequency part of face image decomposed by wavelet, and Butterworth high-pass filter was used to extract high frequency details of low frequency part, thereby reducing details lost. Experiment results show that aging effect is obvious, and that the algorithm has good robustness, real-time performance and accuracy.
{"title":"Research on face aging characteristics synthesis based on wavelet and image enhancement","authors":"Weiping Hu, Rifeng Wang","doi":"10.1109/ICCPS.2015.7454130","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454130","url":null,"abstract":"Facial aging characteristics synthesis is useful for face recognition system. After analyzing characteristics of human face images, image enhancement technology was used to strengthen the details of high frequency part of face image decomposed by wavelet, and Butterworth high-pass filter was used to extract high frequency details of low frequency part, thereby reducing details lost. Experiment results show that aging effect is obvious, and that the algorithm has good robustness, real-time performance and accuracy.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122952594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454105
W. Cao, J. Jin, T. Yang, Q. Wang
One novel microstrip antenna with triple-band triple-mode (TBTM) is proposed in this paper. In the lower frequency band, the antenna operates in the dipole mode with omnidirectional radiation pattern along the YOZ plane. In the middle frequency band, the antenna operates in the dipole mode with omnidirectional radiation pattern along the XOY plane. While in the upper frequency band, the antenna works in the patch mode with directional radiation patterns along the Z-axis direction. Due to the mutual-coupling periodical circular patches and inductance metal pins connecting the upper and lower patches, the three modes can be excited in three different bands. The surface current distribution is introduced to analyze the antenna working principle. This single-feed single-layer patch antenna has potential application value in wireless communications for its compact structure, multi-band function and diversified radiation patterns.
{"title":"Compact microstrip antenna with triple-band triple-mode characteristics","authors":"W. Cao, J. Jin, T. Yang, Q. Wang","doi":"10.1109/ICCPS.2015.7454105","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454105","url":null,"abstract":"One novel microstrip antenna with triple-band triple-mode (TBTM) is proposed in this paper. In the lower frequency band, the antenna operates in the dipole mode with omnidirectional radiation pattern along the YOZ plane. In the middle frequency band, the antenna operates in the dipole mode with omnidirectional radiation pattern along the XOY plane. While in the upper frequency band, the antenna works in the patch mode with directional radiation patterns along the Z-axis direction. Due to the mutual-coupling periodical circular patches and inductance metal pins connecting the upper and lower patches, the three modes can be excited in three different bands. The surface current distribution is introduced to analyze the antenna working principle. This single-feed single-layer patch antenna has potential application value in wireless communications for its compact structure, multi-band function and diversified radiation patterns.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115439704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454194
Dingkun Ma, Xinquan Yang, Yin Kuang
In order to raise the adapbility of SVM classification to the specific dataset, a composite kernel is proposed and introduced into SVM, and the parameters are optimized according to “Fisher Discriminant” and “Kernel Alignment”, to maximize the class separability in the empirical feature space and, make composite kernel to be more relevant for the dataset and adapt itself by adjusting its composed coefficient parameters, thus allowing more flexibility in the kernel choice. The performance of support vector machines based composite kernel (CK-SVM) is extensively evaluated on five UCI standard datasets, at the same time, we compare CK-SVM with other existing method and get convincing results, which reveal that the proposed method is a robust and promising classifier.
{"title":"Support vector machines based composite kernel","authors":"Dingkun Ma, Xinquan Yang, Yin Kuang","doi":"10.1109/ICCPS.2015.7454194","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454194","url":null,"abstract":"In order to raise the adapbility of SVM classification to the specific dataset, a composite kernel is proposed and introduced into SVM, and the parameters are optimized according to “Fisher Discriminant” and “Kernel Alignment”, to maximize the class separability in the empirical feature space and, make composite kernel to be more relevant for the dataset and adapt itself by adjusting its composed coefficient parameters, thus allowing more flexibility in the kernel choice. The performance of support vector machines based composite kernel (CK-SVM) is extensively evaluated on five UCI standard datasets, at the same time, we compare CK-SVM with other existing method and get convincing results, which reveal that the proposed method is a robust and promising classifier.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132548224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454161
Ting Kuang, Xuejiao Wang, Xing Yin, Yuliang Dong
A broad-band microstrip amplitude equalizer with spurline resonators is proposed. The resonator is composed of an open stub and a resistance. As a result of using this new structure, the equalizer not only supports broad-band performance with large equilibrium, but also exhibits an ultra-reduced size compared with the traditional microstrip equalizer. Through numerous simulation experiments by HFSS (High Frequency System Simulator), a broad-band (6 GHz~18 GHz) equalizer has been designed, fabricated and measured. The measurement data generally matches well with the simulated results. It shows that this structure is an effective method of designing microstrip equalizer.
提出了一种带脉冲线谐振器的宽带微带幅度均衡器。谐振器由一个开路短管和一个电阻组成。由于采用这种新结构，均衡器不仅支持大平衡的宽带性能，而且与传统的微带均衡器相比，具有超小的尺寸。通过HFSS (High Frequency System Simulator)的大量仿真实验，设计、制作并测量了一个宽带(6 GHz~18 GHz)均衡器。测量数据与仿真结果基本吻合。结果表明，这种结构是设计微带均衡器的一种有效方法。
{"title":"Design of wide band microstrip equalizer using spurline","authors":"Ting Kuang, Xuejiao Wang, Xing Yin, Yuliang Dong","doi":"10.1109/ICCPS.2015.7454161","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454161","url":null,"abstract":"A broad-band microstrip amplitude equalizer with spurline resonators is proposed. The resonator is composed of an open stub and a resistance. As a result of using this new structure, the equalizer not only supports broad-band performance with large equilibrium, but also exhibits an ultra-reduced size compared with the traditional microstrip equalizer. Through numerous simulation experiments by HFSS (High Frequency System Simulator), a broad-band (6 GHz~18 GHz) equalizer has been designed, fabricated and measured. The measurement data generally matches well with the simulated results. It shows that this structure is an effective method of designing microstrip equalizer.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130880721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454128
Yang Kuo, Wei Yu, H. Ao, Zhang Xiao Qin
Composite structures of dual-band metamaterials in the terahertz regime are proposed, which are based on the H shape and double splitting resonator (DSRR) structure. Simulation results show that it can perform absorption peaks at one resonant frequency 0.43 THz with the absorption more than 95%, and at two distinct resonant frequencies 0.84 THz with the absorption more than 85%. Furthermore, the resonance mechanism is studied using equivalent circuits, which is well agree with the simulation results. These models have the advantages of simple structure and strong resonance, which indicate potentially application in the design of multiband terahertz devices.
{"title":"Dual-band terahertz metamaterial absorber based on H-shape and double-SRR structure","authors":"Yang Kuo, Wei Yu, H. Ao, Zhang Xiao Qin","doi":"10.1109/ICCPS.2015.7454128","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454128","url":null,"abstract":"Composite structures of dual-band metamaterials in the terahertz regime are proposed, which are based on the H shape and double splitting resonator (DSRR) structure. Simulation results show that it can perform absorption peaks at one resonant frequency 0.43 THz with the absorption more than 95%, and at two distinct resonant frequencies 0.84 THz with the absorption more than 85%. Furthermore, the resonance mechanism is studied using equivalent circuits, which is well agree with the simulation results. These models have the advantages of simple structure and strong resonance, which indicate potentially application in the design of multiband terahertz devices.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128478301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454224
Y. Ouyang, Hungkai Ding
Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is a very attractive technique with high spectrum utilization and robust immunity against multi-path interference. However, one of the main problems of MIMO-OFDM is the high peak-to-average power ratio (PAPR) in the transmit signals. In this paper, we propose novel structures with more degrees of freedom to reduce PAPR, based on space-time block code (STBC) and space-frequency block code (SFBC). From the simulation results, we can see that the proposed scheme has better PAPR reduction performance of approximately 1dB then other traditional method. The BER simulation results also show that the proposed combining scheme is suitable for all proposed STBC/SFBC patterns, and performs as well as Alamouti combining scheme.
{"title":"Peak-to-average power ratio reduction techniques for MIMO-OFDM systems with STBC/SFBC","authors":"Y. Ouyang, Hungkai Ding","doi":"10.1109/ICCPS.2015.7454224","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454224","url":null,"abstract":"Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is a very attractive technique with high spectrum utilization and robust immunity against multi-path interference. However, one of the main problems of MIMO-OFDM is the high peak-to-average power ratio (PAPR) in the transmit signals. In this paper, we propose novel structures with more degrees of freedom to reduce PAPR, based on space-time block code (STBC) and space-frequency block code (SFBC). From the simulation results, we can see that the proposed scheme has better PAPR reduction performance of approximately 1dB then other traditional method. The BER simulation results also show that the proposed combining scheme is suitable for all proposed STBC/SFBC patterns, and performs as well as Alamouti combining scheme.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123723300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454155
Fangzhou Guo, L. Xia, R. Xu
This paper presents a dual-band bandpass compact low temperature co-fired ceramic (LTCC) filter using folded resonators. The passband of the proposed filter centred at 2.45 GHz and 5.2 GHz, and three transmission zeroes are generated. It is easy to couple the Π-type resonators of the proposed structure compared with the planar form. The filter is miniaturized by using the LTCC multilayers structure, and the size of the circuit is 5.5× 5.1 × 2.3 mm3.
{"title":"Compact dual-band LTCC filter using folded resonators","authors":"Fangzhou Guo, L. Xia, R. Xu","doi":"10.1109/ICCPS.2015.7454155","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454155","url":null,"abstract":"This paper presents a dual-band bandpass compact low temperature co-fired ceramic (LTCC) filter using folded resonators. The passband of the proposed filter centred at 2.45 GHz and 5.2 GHz, and three transmission zeroes are generated. It is easy to couple the Π-type resonators of the proposed structure compared with the planar form. The filter is miniaturized by using the LTCC multilayers structure, and the size of the circuit is 5.5× 5.1 × 2.3 mm3.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126758209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454151
Yong-qi Wang, Xing Jiang, Xiao-lei Zhao, Xin Liao
An angle measurement antenna system, which consists of one transmitter antenna and three receiving antennas on the same substrate, is designed for the automotive anti-collision radar working in the K-band. For antenna design, Dolph-Tchebyscheff weighting method is used for its perfect balance between low side-lobe and high antenna gain. Besides, the dual-baseline method is adopted in the layout of four antennas to improve the angle measurement accuracy and widen the angle measurement range. At last, the antenna system is simulated and optimized, and the simulated results show that the transmitting antenna works correctly without coupling interference from receiving antennas.
{"title":"Design of microstrip array antenna for angle measurement based on dual-baseline method","authors":"Yong-qi Wang, Xing Jiang, Xiao-lei Zhao, Xin Liao","doi":"10.1109/ICCPS.2015.7454151","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454151","url":null,"abstract":"An angle measurement antenna system, which consists of one transmitter antenna and three receiving antennas on the same substrate, is designed for the automotive anti-collision radar working in the K-band. For antenna design, Dolph-Tchebyscheff weighting method is used for its perfect balance between low side-lobe and high antenna gain. Besides, the dual-baseline method is adopted in the layout of four antennas to improve the angle measurement accuracy and widen the angle measurement range. At last, the antenna system is simulated and optimized, and the simulated results show that the transmitting antenna works correctly without coupling interference from receiving antennas.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114132864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454181
Xiaohan Du, Xiangqin Ou
P2P (Peer-to-Peer) flow classification is very meaningful for network management, performance analysis, quality of service (QoS) melioration, and so on, since P2P applications occupy most traffic of current Internet. Machine learning classification methods have attracted wide attention because of high classification accuracy, and the capability of classifying unknown P2P traffic. Existing machine learning methods mainly use the time domain characters of flows to classify P2P traffic. Experiment results show that this kind of methods has high classification accuracy if the training data and test data are captured from the same network environment. Otherwise, the classification accuracy bears great instability. The main reason is that some time domain characters of flows are instable and sensitive with the change of network environment. To improve the stability of machine learning classification methods, in this paper we carry out a framework of time domain and frequency domain characters based machine learning classification method. In addition to the existing time domain characters, we adopt wavelet transform based frequency domain characters of flows to machine learning classification method. Experiment results show that the proposed framework is sufficiently stable no matter the training data and test data are captured from the same network environment or not.
{"title":"P2P flow classification based on wavelet transform","authors":"Xiaohan Du, Xiangqin Ou","doi":"10.1109/ICCPS.2015.7454181","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454181","url":null,"abstract":"P2P (Peer-to-Peer) flow classification is very meaningful for network management, performance analysis, quality of service (QoS) melioration, and so on, since P2P applications occupy most traffic of current Internet. Machine learning classification methods have attracted wide attention because of high classification accuracy, and the capability of classifying unknown P2P traffic. Existing machine learning methods mainly use the time domain characters of flows to classify P2P traffic. Experiment results show that this kind of methods has high classification accuracy if the training data and test data are captured from the same network environment. Otherwise, the classification accuracy bears great instability. The main reason is that some time domain characters of flows are instable and sensitive with the change of network environment. To improve the stability of machine learning classification methods, in this paper we carry out a framework of time domain and frequency domain characters based machine learning classification method. In addition to the existing time domain characters, we adopt wavelet transform based frequency domain characters of flows to machine learning classification method. Experiment results show that the proposed framework is sufficiently stable no matter the training data and test data are captured from the same network environment or not.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114379413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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