Pub Date : 2013-12-01DOI: 10.1109/TENCON.2013.6718950
Shu-Mei Guo, Chih-Yuan Hsu, J. Tsai
In the last two decades, there exist many high-performance prediction-based methods that use different coefficients of causal neighbors in order to exploit the relationship of spatial energy to produce a less error image. Besides, more and more researches focus on the accuracy of predictor; nevertheless, the predictor spends a lot of time on finding the best coefficients of causal neighbors. The objective of our research is to propose an efficient and implementable method to improve compression ratio, without increasing extra computation complexity. Here, we present an improved lossless image compression based on the prediction method, by the proposed application of efficient error value centralization by sign bits. The contribution of this paper is to centralize error values in a novel way to improves coding performance. Experimental results show that our proposed method achieves higher compression ratio than the context-based, adaptive, and lossless image codec (CALIC) method for the images with many details or slightly regular texture.
{"title":"Efficient image compression based on error value centralization by sign bits","authors":"Shu-Mei Guo, Chih-Yuan Hsu, J. Tsai","doi":"10.1109/TENCON.2013.6718950","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6718950","url":null,"abstract":"In the last two decades, there exist many high-performance prediction-based methods that use different coefficients of causal neighbors in order to exploit the relationship of spatial energy to produce a less error image. Besides, more and more researches focus on the accuracy of predictor; nevertheless, the predictor spends a lot of time on finding the best coefficients of causal neighbors. The objective of our research is to propose an efficient and implementable method to improve compression ratio, without increasing extra computation complexity. Here, we present an improved lossless image compression based on the prediction method, by the proposed application of efficient error value centralization by sign bits. The contribution of this paper is to centralize error values in a novel way to improves coding performance. Experimental results show that our proposed method achieves higher compression ratio than the context-based, adaptive, and lossless image codec (CALIC) method for the images with many details or slightly regular texture.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129823608","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 : 2013-12-01DOI: 10.1109/TENCON.2013.6718852
Xin Yang, Wei Wang, Kangyang Xu, T. Shibata, T. Yoshimasu
This paper presents novel sub-harmonic mixer topologies for W-band automotive radar applications in 65nm CMOS technology. Working principle and performance of three kinds of topologies are analyzed and discussed with physical layout and EM simulation. The simulated performance shows a double side band noise figure of 20.8 dB and a voltage conversion gain of -8.7 dB at an RF frequency of 79.0001 GHz and a LO frequency of 39.5 GHz. The dc power consumption is only 10.4μW.
{"title":"W-band ultra-low-power sub-harmonic mixer for automotive radar in 65nm CMOS","authors":"Xin Yang, Wei Wang, Kangyang Xu, T. Shibata, T. Yoshimasu","doi":"10.1109/TENCON.2013.6718852","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6718852","url":null,"abstract":"This paper presents novel sub-harmonic mixer topologies for W-band automotive radar applications in 65nm CMOS technology. Working principle and performance of three kinds of topologies are analyzed and discussed with physical layout and EM simulation. The simulated performance shows a double side band noise figure of 20.8 dB and a voltage conversion gain of -8.7 dB at an RF frequency of 79.0001 GHz and a LO frequency of 39.5 GHz. The dc power consumption is only 10.4μW.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114966355","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 : 2013-12-01DOI: 10.1109/TENCON.2013.6718449
Shoichiro Tsukamoto, Naoto Iizasa, K. Yoshitomi, R. Pokharel, K. Yoshida, R. Hattori, H. Kanaya, D. Kanemoto
This paper describes the design of a rectenna for batteryless electronic paper. The rectenna is composed of a one-sided directional flexible antenna and a booster rectifying circuit that is composed of a series resonant circuit and a Cockcroft-Walton circuit. The proposed one-sided directional flexible antenna has a bottom floating metal layer that enables one-sided radiation. The booster rectifying circuit has an output of 3.5 V DC for an input of 200 mV and a 50-Ω power source at 920 MHz.
本文介绍了一种无电池电子纸整流天线的设计。整流天线由单侧定向柔性天线和升压整流电路组成，升压整流电路由串联谐振电路和Cockcroft-Walton电路组成。所提出的单侧定向柔性天线具有使单侧辐射成为可能的底部浮动金属层。升压整流电路的输出为3.5 V DC，输入为200 mV，电源为50-Ω，频率为920 MHz。
{"title":"Development of a rectenna for batteryless electronic paper","authors":"Shoichiro Tsukamoto, Naoto Iizasa, K. Yoshitomi, R. Pokharel, K. Yoshida, R. Hattori, H. Kanaya, D. Kanemoto","doi":"10.1109/TENCON.2013.6718449","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6718449","url":null,"abstract":"This paper describes the design of a rectenna for batteryless electronic paper. The rectenna is composed of a one-sided directional flexible antenna and a booster rectifying circuit that is composed of a series resonant circuit and a Cockcroft-Walton circuit. The proposed one-sided directional flexible antenna has a bottom floating metal layer that enables one-sided radiation. The booster rectifying circuit has an output of 3.5 V DC for an input of 200 mV and a 50-Ω power source at 920 MHz.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125053938","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 : 2013-12-01DOI: 10.1109/TENCON.2013.6719078
N. M. Anas, S. Yusof, R. Mohamad
This paper describes the performance of singular value decomposition (SVD) estimation techniques for multiband orthogonal frequency-division multiplexing (OFDM) of ultra-wideband (UWB) system in Saleh-Valenzuela channel modelling. The performance of SVD estimation is compared against LS and MMSE methods corresponding to zero-padded of a UWB system. The crucial limitation in UWB system is strictly low power transmission leads to many challenges in designing the system. However, most of the conventional channel estimation in frequency domain requires either pre-storing a large matrix or performing real-time matrix inversion, which should be avoided for UWB low complexity implementation. The intuition of this paper is to analyse further the complexity of SVD techniques against least squares (LS) and minimum mean square error (MMSE) estimation method. Consequently, this work implies that the SVD method gives an improvement of 3-5 dB if compared to the LS method while a significant complexity reduction of 57.8% as compared to MMSE methods.
{"title":"On the performance of SVD estimation in Saleh-Valenzuela channel for UWB system","authors":"N. M. Anas, S. Yusof, R. Mohamad","doi":"10.1109/TENCON.2013.6719078","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6719078","url":null,"abstract":"This paper describes the performance of singular value decomposition (SVD) estimation techniques for multiband orthogonal frequency-division multiplexing (OFDM) of ultra-wideband (UWB) system in Saleh-Valenzuela channel modelling. The performance of SVD estimation is compared against LS and MMSE methods corresponding to zero-padded of a UWB system. The crucial limitation in UWB system is strictly low power transmission leads to many challenges in designing the system. However, most of the conventional channel estimation in frequency domain requires either pre-storing a large matrix or performing real-time matrix inversion, which should be avoided for UWB low complexity implementation. The intuition of this paper is to analyse further the complexity of SVD techniques against least squares (LS) and minimum mean square error (MMSE) estimation method. Consequently, this work implies that the SVD method gives an improvement of 3-5 dB if compared to the LS method while a significant complexity reduction of 57.8% as compared to MMSE methods.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127691481","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 : 2013-12-01DOI: 10.1109/TENCON.2013.6719076
F. Itami, E. Watanabe
This paper provides a study on a practical digital filter bank based on a conventional filter bank framework for the reconstruction of uniformly sampled signals from nonuniform samples. The digital filter bank structure is studied in an implementation and design point of view, and its reconstruction performance is compared with a least squares scheme.
{"title":"A study on digital filter banks for reconstruction of uniformly sampled signals from nonuniform samples","authors":"F. Itami, E. Watanabe","doi":"10.1109/TENCON.2013.6719076","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6719076","url":null,"abstract":"This paper provides a study on a practical digital filter bank based on a conventional filter bank framework for the reconstruction of uniformly sampled signals from nonuniform samples. The digital filter bank structure is studied in an implementation and design point of view, and its reconstruction performance is compared with a least squares scheme.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115470787","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 : 2013-12-01DOI: 10.1109/TENCON.2013.6718451
K. Miyahara, D. Kanemoto, R. Pokharel, K. Yoshida, H. Kanaya
This paper presents a digitally controlled oscillator (DCO) in inductor-capacitor (LC) topology with dual -band and fine frequency tuning steps. Using special Fibonacci sequence method and additional capacitor in the capacitor bank, this DCO operates two differential frequency bands and achieves finer tuning range than that of a conventional binary sequence DCO. The proposed circuit is implemented in 0.18 um CMOS technology and tested. It has a high-band frequency of 4.01-4.54 GHz and low-band frequency of 3.41-3.74 GHz. The measured phase noise is -119.3 and -104.5 (dBc/Hz at 1MHz offset) at carrier frequency at 4.54 GHz and 3.41 GHz.
本文提出了一种采用电感-电容(LC)拓扑结构的双频段精细频率调谐数字振荡器(DCO)。该DCO采用特殊的斐波那契数列方法，并在电容组中增加电容，可在两个差分频段工作，比传统的二进制序列DCO实现更精细的调谐范围。该电路采用0.18 um CMOS技术实现，并进行了测试。高频段频率为4.01-4.54 GHz，低频段频率为3.41-3.74 GHz。在4.54 GHz和3.41 GHz载波频率下，测得的相位噪声分别为-119.3和-104.5 (dBc/Hz, 1MHz偏移)。
{"title":"Development of dual band digitally controlled oscillator using Fibonacci sequence in 0.18 um CMOS process","authors":"K. Miyahara, D. Kanemoto, R. Pokharel, K. Yoshida, H. Kanaya","doi":"10.1109/TENCON.2013.6718451","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6718451","url":null,"abstract":"This paper presents a digitally controlled oscillator (DCO) in inductor-capacitor (LC) topology with dual -band and fine frequency tuning steps. Using special Fibonacci sequence method and additional capacitor in the capacitor bank, this DCO operates two differential frequency bands and achieves finer tuning range than that of a conventional binary sequence DCO. The proposed circuit is implemented in 0.18 um CMOS technology and tested. It has a high-band frequency of 4.01-4.54 GHz and low-band frequency of 3.41-3.74 GHz. The measured phase noise is -119.3 and -104.5 (dBc/Hz at 1MHz offset) at carrier frequency at 4.54 GHz and 3.41 GHz.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"86 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128879872","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 : 2013-10-01DOI: 10.1109/TENCON.2013.6718937
Zhi-yong Liu
In this paper, a relay selection scheme for cooperative communication with amplify-and-forward (AF) under frequency selective channels is proposed. In the scheme, to tackle with the difficulty caused by frequency selective channel, the output SNR of equalization detector is used as the end-to-end SNR to order the relays. According to relay ordering, one or multiple relay can be sequentially selected out from N relays. The numerical results verify the method of relay ordering and show that the multiple relay selection scheme outperforms conventional optimal single relay selection scheme.
{"title":"Single and multiple relay selection for cooperative communication under frequency selective channels","authors":"Zhi-yong Liu","doi":"10.1109/TENCON.2013.6718937","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6718937","url":null,"abstract":"In this paper, a relay selection scheme for cooperative communication with amplify-and-forward (AF) under frequency selective channels is proposed. In the scheme, to tackle with the difficulty caused by frequency selective channel, the output SNR of equalization detector is used as the end-to-end SNR to order the relays. According to relay ordering, one or multiple relay can be sequentially selected out from N relays. The numerical results verify the method of relay ordering and show that the multiple relay selection scheme outperforms conventional optimal single relay selection scheme.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116635725","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 : 2013-10-01DOI: 10.1109/TENCON.2013.6718893
M. Masek, Frank E. B. Ophelders, Sushil Pangeni, A. Boeing, T. Braunl
Simulation is an essential early evaluation tool for mobile robot research and development, and different stages of development have individual simulator needs. In this paper, we document details of two simulation tools that were developed for an entry into the MAGIC 2010 challenge, an autonomous ground vehicle competition. In developing the entry, simulators were used in two domains: problem analysis and solution testing. The problem analysis simulator was built using a commercial 3D game engine, whilst the simulator aimed at testing of the solution was built using a standard robotics library. By leveraging existing technologies appropriate for each domain, the task of simulator construction was simplified. The split allowed problem exploration independent of selected hardware, allowing for early simulation. These simulators allowed a team composed mostly of part-time volunteers to construct a complex distributed, multi-robot system and proved essential to our team's success in the MAGIC 2010 challenge.
{"title":"WAMbot: Simulation and modelling of a team of autonomous mobile robots","authors":"M. Masek, Frank E. B. Ophelders, Sushil Pangeni, A. Boeing, T. Braunl","doi":"10.1109/TENCON.2013.6718893","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6718893","url":null,"abstract":"Simulation is an essential early evaluation tool for mobile robot research and development, and different stages of development have individual simulator needs. In this paper, we document details of two simulation tools that were developed for an entry into the MAGIC 2010 challenge, an autonomous ground vehicle competition. In developing the entry, simulators were used in two domains: problem analysis and solution testing. The problem analysis simulator was built using a commercial 3D game engine, whilst the simulator aimed at testing of the solution was built using a standard robotics library. By leveraging existing technologies appropriate for each domain, the task of simulator construction was simplified. The split allowed problem exploration independent of selected hardware, allowing for early simulation. These simulators allowed a team composed mostly of part-time volunteers to construct a complex distributed, multi-robot system and proved essential to our team's success in the MAGIC 2010 challenge.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116927724","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 : 2013-10-01DOI: 10.1109/TENCON.2013.6718850
Cai-Zhong Li, Xie Wenxian
In this paper, a new lattice Boltzmann model with a first order amending term is offered to solve the specialized Kuramoto-Sivashinsky equation. The governing equation can be recovered generally from the proposed Boltzmann equation based on the Chapman-Enskog expansion. The numerical results agree well with the exact solutions and it verifies that the presented lattice Boltzmann method is suitable for solving the specialized Kuramoto-Sivashinsky equation.
{"title":"Efficient lattice Boltzmann method for specialized Kuramoto-Sivashinsky equation","authors":"Cai-Zhong Li, Xie Wenxian","doi":"10.1109/TENCON.2013.6718850","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6718850","url":null,"abstract":"In this paper, a new lattice Boltzmann model with a first order amending term is offered to solve the specialized Kuramoto-Sivashinsky equation. The governing equation can be recovered generally from the proposed Boltzmann equation based on the Chapman-Enskog expansion. The numerical results agree well with the exact solutions and it verifies that the presented lattice Boltzmann method is suitable for solving the specialized Kuramoto-Sivashinsky equation.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116984268","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 : 2013-10-01DOI: 10.1109/TENCON.2013.6718888
Jun Ding, X. Kang, Liming Yang, M. Hojo
The zero-sequence directional protection on parallel lines will mal-operate for zero-sequence mutual inductance. An inductance model for an internal fault is established and a model error function is defined on model recognition theory by analyzing the fault equivalent circuit. The model error is small for an internal fault while large and oscillating for an external fault. To solve the problem caused by the high-frequency components in the transient waveform on the set threshold value of the proposed method, the power frequency component is used for the model error function in this paper. A new phasor extracting method named fast phasor extracting algorithm is introduced to extract the power frequency component during the transient period. Simulation results from EMTP prove the high quality of the improved zero-sequence directional element and its validity to pick up speed to remove the fault.
{"title":"An improved zero-sequence directional element for parallel lines based on fast phasor extracting algorithm","authors":"Jun Ding, X. Kang, Liming Yang, M. Hojo","doi":"10.1109/TENCON.2013.6718888","DOIUrl":"https://doi.org/10.1109/TENCON.2013.6718888","url":null,"abstract":"The zero-sequence directional protection on parallel lines will mal-operate for zero-sequence mutual inductance. An inductance model for an internal fault is established and a model error function is defined on model recognition theory by analyzing the fault equivalent circuit. The model error is small for an internal fault while large and oscillating for an external fault. To solve the problem caused by the high-frequency components in the transient waveform on the set threshold value of the proposed method, the power frequency component is used for the model error function in this paper. A new phasor extracting method named fast phasor extracting algorithm is introduced to extract the power frequency component during the transient period. Simulation results from EMTP prove the high quality of the improved zero-sequence directional element and its validity to pick up speed to remove the fault.","PeriodicalId":425023,"journal":{"name":"2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116993323","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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