Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454184
Xiaobo Li, Jianhua Zhang, Quan Zhou
To date a couple of lossless data hiding methods have been developed. However, the pure payload is still a little low in those proposed schemes. To solve this problem, a lossless data hiding method based on pixel differences histogram for multilevel embedding is proposed in the paper, which utilizes multiple pairs of peak points to embed more data, and also alternates the scan order to achieve the higher embedding capacity in every embedding layer. Our experimental results show that the proposed scheme has higher PSNR and high pure payload than that of other methods being considered in the paper. Besides, the output image visual quality lies within the acceptable range.
{"title":"Multilevel lossless data hiding using multi-peak based on pixel differences histogram","authors":"Xiaobo Li, Jianhua Zhang, Quan Zhou","doi":"10.1109/ICCPS.2015.7454184","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454184","url":null,"abstract":"To date a couple of lossless data hiding methods have been developed. However, the pure payload is still a little low in those proposed schemes. To solve this problem, a lossless data hiding method based on pixel differences histogram for multilevel embedding is proposed in the paper, which utilizes multiple pairs of peak points to embed more data, and also alternates the scan order to achieve the higher embedding capacity in every embedding layer. Our experimental results show that the proposed scheme has higher PSNR and high pure payload than that of other methods being considered in the paper. Besides, the output image visual quality lies within the acceptable range.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"18 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":"116806484","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.2015.7454092
Bing Liu, Y. Liu, Y. Zou, Ye Zhou
In this paper, synthesis and design of hybrid-shaped cavity filters using substrate integrated waveguide (SIW) technique is proposed. Both triangular - and rectangular SIW cavities are combined for the first time in the design of band pass filter. Cross-coupling structures are realized in both proposed filters via two or three propagation paths. Measured results are presented and compared to those simulated by Ansoft's High Frequency Structure Simulator (HFSS) software package. A good agreement between the simulated and measured results is observed, which has also validated the proposed filtering structure with hybrid-shaped SIW cavities.
{"title":"Design of band-pass filter using hybrid-shaped substrate integrated waveguide (SIW) cavity","authors":"Bing Liu, Y. Liu, Y. Zou, Ye Zhou","doi":"10.1109/ICCPS.2015.7454092","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454092","url":null,"abstract":"In this paper, synthesis and design of hybrid-shaped cavity filters using substrate integrated waveguide (SIW) technique is proposed. Both triangular - and rectangular SIW cavities are combined for the first time in the design of band pass filter. Cross-coupling structures are realized in both proposed filters via two or three propagation paths. Measured results are presented and compared to those simulated by Ansoft's High Frequency Structure Simulator (HFSS) software package. A good agreement between the simulated and measured results is observed, which has also validated the proposed filtering structure with hybrid-shaped SIW cavities.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"9 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":"123659006","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.2015.7454108
Xuejiao Wang, Ting Kuang, Xing Yin, Qiang Dong
This paper introduces a new kind of rectangular waveguide-microstrip transition structure with a trapezoidal probe and triangular transition section in Ka-band. While The printing structure is very easy to fabricate and doesn't need to test. This structure can replace fin-line transition and has a practical value. The measured results show that the return loss is below -9dB and the transmission loss is -1.1dB~-3.4dB when the frequency ranges from 26.5GHz to 37.5GHz.
{"title":"Design of waveguide-microstrip transition circuit in Ka-band","authors":"Xuejiao Wang, Ting Kuang, Xing Yin, Qiang Dong","doi":"10.1109/ICCPS.2015.7454108","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454108","url":null,"abstract":"This paper introduces a new kind of rectangular waveguide-microstrip transition structure with a trapezoidal probe and triangular transition section in Ka-band. While The printing structure is very easy to fabricate and doesn't need to test. This structure can replace fin-line transition and has a practical value. The measured results show that the return loss is below -9dB and the transmission loss is -1.1dB~-3.4dB when the frequency ranges from 26.5GHz to 37.5GHz.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"6 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":"123636326","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.2015.7454099
Y. Suen, S. Xiao, Yigao Xiong, Suming Hao, Xiaoxiang Zhao
We propose a new scheme to physically realize the short time Fourier transform of chirped optical pulses using time lens array that enables us to get time-frequency distribution without using FFT algorithm. The idea of Short-time Fourier transform (STFT) is physically realized in our scheme. The Fourier processor based upon a four-wave mixing time lens is used to perform the process of Fourier transformation. The ultra-short optical input signal is divided to multiple duplicates that is delayed in turn, and different short period of time of multiple duplicates are separately transformed into the frequency domain by multiple time lens. Pump pulse is both worked as the provider who has the quadratic phase and the window function of STFT. Simulations have been done to investigate performance of the time-frequency scheme compared with STFT using FFT algorithm.
{"title":"Time-frequency analysis system based on temporal Fourier transform","authors":"Y. Suen, S. Xiao, Yigao Xiong, Suming Hao, Xiaoxiang Zhao","doi":"10.1109/ICCPS.2015.7454099","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454099","url":null,"abstract":"We propose a new scheme to physically realize the short time Fourier transform of chirped optical pulses using time lens array that enables us to get time-frequency distribution without using FFT algorithm. The idea of Short-time Fourier transform (STFT) is physically realized in our scheme. The Fourier processor based upon a four-wave mixing time lens is used to perform the process of Fourier transformation. The ultra-short optical input signal is divided to multiple duplicates that is delayed in turn, and different short period of time of multiple duplicates are separately transformed into the frequency domain by multiple time lens. Pump pulse is both worked as the provider who has the quadratic phase and the window function of STFT. Simulations have been done to investigate performance of the time-frequency scheme compared with STFT using FFT algorithm.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"42 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":"124804302","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.2015.7454087
Chao‐An Lyu, Shiwen Yang, Hangyu Zhang, Z. Nie
A new type of tightly coupled tilted dipole array element (TTCDA) is proposed in this paper. The tilted dipole antenna, connected with interdigital capacitors, has stronger coupling than the one connected directly by the end. The antenna consists of two dipole arms and four cross-type parasitic striplines, and fed by an exponential parallel balun which transforms the input impedance from 50Ω to 200Ω. The antenna is simulated in the infinite*infinite conditions through periodic boundary and the antenna achieves an impedance bandwidth of 2.15GHz - 9.67GHz when scanning to ±45° for VSWR≤3 and low cross polarization of <;-20dB over the major of the band.
{"title":"A new type of tilted tightly coupled dipole arrays with two-dimensional scanning property","authors":"Chao‐An Lyu, Shiwen Yang, Hangyu Zhang, Z. Nie","doi":"10.1109/ICCPS.2015.7454087","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454087","url":null,"abstract":"A new type of tightly coupled tilted dipole array element (TTCDA) is proposed in this paper. The tilted dipole antenna, connected with interdigital capacitors, has stronger coupling than the one connected directly by the end. The antenna consists of two dipole arms and four cross-type parasitic striplines, and fed by an exponential parallel balun which transforms the input impedance from 50Ω to 200Ω. The antenna is simulated in the infinite*infinite conditions through periodic boundary and the antenna achieves an impedance bandwidth of 2.15GHz - 9.67GHz when scanning to ±45° for VSWR≤3 and low cross polarization of <;-20dB over the major of the band.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"52 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":"124043524","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.2015.7454225
Yung-Yi Wang, C. Chou
This study presents a carrier-frequency-offset (CFO) estimation algorithm for the orthogonal frequency division multiplexing (OFDM) system using a general inter-carrier-interference self-cancellation (ICI-SC) precoder. The proposed approach uses the time-shift-invariant property in the ICI-SC precoded signal to estimate the CFO through the multiple signal classfication (MUSIC) algorithm. Compared to conventional CFO estimation methods, in addition to having an estimation error approaching to the Cramer-Rao lower bound (CRLB), the proposed algorithm has an adjustable CFO estimation range linearly proportional to the order of the ICI-SC.
{"title":"On the CFO estimation for precoded OFDM","authors":"Yung-Yi Wang, C. Chou","doi":"10.1109/ICCPS.2015.7454225","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454225","url":null,"abstract":"This study presents a carrier-frequency-offset (CFO) estimation algorithm for the orthogonal frequency division multiplexing (OFDM) system using a general inter-carrier-interference self-cancellation (ICI-SC) precoder. The proposed approach uses the time-shift-invariant property in the ICI-SC precoded signal to estimate the CFO through the multiple signal classfication (MUSIC) algorithm. Compared to conventional CFO estimation methods, in addition to having an estimation error approaching to the Cramer-Rao lower bound (CRLB), the proposed algorithm has an adjustable CFO estimation range linearly proportional to the order of the ICI-SC.","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":"130590108","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.2015.7454114
Chunsheng Luo, Guanghua Lu
A new sparse frequency diverse multiple-input multiple-output (FD-MIMO) radar image reconstruction technique is proposed for off-grid targets in the Compressed sensing framework. We broaden the scope of sparse total least-squares with structured form (SS-TLS) capitalizing on prior information available about the perturbed matrix, and FoCal Underdetermined System Solver (FOCUSS) has low-computation complexity in sparse recovery. Based on SS-TLS and FOCUSS method, the present paper develops a more robust and accurate algorithm. The simulations illustrate the effectiveness of the proposed method.
{"title":"Off-grid sparse FD-MIMO image reconstruction by using improved FOCUSS technique","authors":"Chunsheng Luo, Guanghua Lu","doi":"10.1109/ICCPS.2015.7454114","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454114","url":null,"abstract":"A new sparse frequency diverse multiple-input multiple-output (FD-MIMO) radar image reconstruction technique is proposed for off-grid targets in the Compressed sensing framework. We broaden the scope of sparse total least-squares with structured form (SS-TLS) capitalizing on prior information available about the perturbed matrix, and FoCal Underdetermined System Solver (FOCUSS) has low-computation complexity in sparse recovery. Based on SS-TLS and FOCUSS method, the present paper develops a more robust and accurate algorithm. The simulations illustrate the effectiveness of the proposed method.","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":"128664516","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.2015.7454140
Yu Qiu, L. Xia, Linming Yang
This paper presents a compact bandpass filter(BFP) based on stepped impedance resonator(SIR) with multilayer liquid crystal polymer(LCP) technology. This filter has been designed using broadside coupled with SIR. Adjusting the impedance ratio and length of SIR ,the resonant points are distributed evenly in the passband of filter. The filter is fabricated using multilayer liquid crystal polymer(LCP) process. The bandpass filter presents good electrical performances by utilizing that technology. It showed that filter(5.2-7.7GHz) insertion is less than 1dB and return loss is less than 21dB by using a full-wave analysis software HFSS.
{"title":"A compact bandpass filter using multilayer LCP technology","authors":"Yu Qiu, L. Xia, Linming Yang","doi":"10.1109/ICCPS.2015.7454140","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454140","url":null,"abstract":"This paper presents a compact bandpass filter(BFP) based on stepped impedance resonator(SIR) with multilayer liquid crystal polymer(LCP) technology. This filter has been designed using broadside coupled with SIR. Adjusting the impedance ratio and length of SIR ,the resonant points are distributed evenly in the passband of filter. The filter is fabricated using multilayer liquid crystal polymer(LCP) process. The bandpass filter presents good electrical performances by utilizing that technology. It showed that filter(5.2-7.7GHz) insertion is less than 1dB and return loss is less than 21dB by using a full-wave analysis software HFSS.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"99 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":"128794419","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.2015.7454148
Xiao-feng Li
A new type of planar monopole antenna is presented in this paper. A choke circuit grounding and slot loaded method is applied in the design. Simulation shows the antenna has a stable omni-directional radiation pattern and small reflection coefficient in a wide band range. In the frequency band from 2.2 GHz to 5.0 GHz, The antenna VSWR is less than 2, and the gain is range from 2.3-3.5dBi.
{"title":"Design of a CPW-fed wideband planar monopole antenna with omni-directional pattern improvement","authors":"Xiao-feng Li","doi":"10.1109/ICCPS.2015.7454148","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454148","url":null,"abstract":"A new type of planar monopole antenna is presented in this paper. A choke circuit grounding and slot loaded method is applied in the design. Simulation shows the antenna has a stable omni-directional radiation pattern and small reflection coefficient in a wide band range. In the frequency band from 2.2 GHz to 5.0 GHz, The antenna VSWR is less than 2, and the gain is range from 2.3-3.5dBi.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"26 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":"127054941","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.2015.7454203
Mengkui Shen, Yang Huang, Z. Shao
In this paper, a novel tunable microwave bandpass filter (BPF) based on liquid crystal (LC) technology is presented. For ease of supplying ac voltages, the proposed filter is achieved by particular configuration schemes with low cost inverted-microstrip structure. Two open-circuited stubs are placed inside a meander loop resonator so as to form quarter wavelength resonators, which is good to keep the compact configuration. By taking advantage of the property of LC, central frequency tunability is induced by applying low ac voltages. In the LC default state, the proposed filter has three-pole, it operates at 4.7GHz with about 41% fractional bandwidth (1.94GHz).
{"title":"A tunable microstrip dual-mode bandpass filter based on liquid crystal technology","authors":"Mengkui Shen, Yang Huang, Z. Shao","doi":"10.1109/ICCPS.2015.7454203","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454203","url":null,"abstract":"In this paper, a novel tunable microwave bandpass filter (BPF) based on liquid crystal (LC) technology is presented. For ease of supplying ac voltages, the proposed filter is achieved by particular configuration schemes with low cost inverted-microstrip structure. Two open-circuited stubs are placed inside a meander loop resonator so as to form quarter wavelength resonators, which is good to keep the compact configuration. By taking advantage of the property of LC, central frequency tunability is induced by applying low ac voltages. In the LC default state, the proposed filter has three-pole, it operates at 4.7GHz with about 41% fractional bandwidth (1.94GHz).","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"12 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":"127187110","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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