{"title":"Design for multiband monopole antenna with parasitic elements for in-building mobile communication","authors":"Sung-min Kim, K. Min, Seong-yong Gang","doi":"10.1109/APWIMOB.2014.6920292","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920292","url":null,"abstract":"This paper presents a design for multiband monopole antenna with parasitic elements to realize the multi resonance by control of parasitic pole number for the in-building mobile communication. Especially, the firefighting radio band which is operated at 445 MHz of low frequency band is considered in this study. In order to satisfy for the mobile communication service such as LTE (890 MHz band), PCS (1.8 GHz band), W-CDMA (2.0 GHz band) and Wi-Fi (2.45 GHz band) as well as firefighting radio system (445 MHz band), a monopole radiator and many parasitic elements on a circular disc ground plane are designed. The measured results were observed a reasonable agreement with the simulated results of a proposed antenna.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114197832","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}
N. E. Ghazali, S. Ariffin, N. H. Wahab, Amiruddin, N. Fisal
{"title":"Handover threshold analysis using velocity for Proxy Mobile IPv6","authors":"N. E. Ghazali, S. Ariffin, N. H. Wahab, Amiruddin, N. Fisal","doi":"10.1109/APWIMOB.2014.6920257","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920257","url":null,"abstract":"IP mobility becomes more important with the emergence of various wireless communication technologies. Users move within the same wireless communication technologies or between different wireless communication technologies. Therefore, Internet Engineering Task Force (IETF) introduced Proxy Mobile IPv6 (PMIPv6) to cope with the IP mobility problem. PMIPv6 is a network-based mobility management where handover does not involve in Layer 3 (L3) handover signaling. It is aimed to give mobility to the users in its domain without changing its IP address. However PMIPv6 introduces high handover latency. This paper proposed an algorithm for hybrid handover threshold for PMIPv6. The handover threshold varies based on user's velocity. The user's velocity is divided into three groups which are slow speed, medium speed and fast speed. Simulations are conducted to analyze the relationship of the handover latency with the user's speed. The results shows an improvement compare with other 2 methods.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122464158","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}
{"title":"Iterative receiver design with CFO, SFO, channel estimation and equalization for OFDM systems","authors":"Kuang-Min Lin, Juinn-Horng Deng, Yi-Shin Lin","doi":"10.1109/APWIMOB.2014.6920307","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920307","url":null,"abstract":"Orthogonal Frequency Division Multiplexing (OFDM) is a popular technique in modern wireless communications. There are many systems adopting the OFDM technique, such as IEEE 802.11 a/g/n, IEEE 802.16, Digital Video Broadcasting, etc. Since the subcarriers in an OFDM system are mutually orthogonal in the frequency domain, it is quite sensitive to synchronization errors. In wireless communications, sampling frequency offset (SFO) and carry frequency offset (CFO) will induce inter-carrier interference (ICI) and they are fatal to OFDM system. In this paper, we propose a scheme to deal with ICI. An iterative receiver design which joins SFO, CFO and channel estimation is presented. It can bear normalized CFO about ±0.25 from computer simulations, and the new receiver designs which can effectively combat the synchronizaton problem of OFDM is proved.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125913768","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}
{"title":"Performance capacity of MIMO heterogeneous LTE-advanced network","authors":"Z. Mansor, A. Nix, J. McGeehan","doi":"10.1109/APWIMOB.2014.6920299","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920299","url":null,"abstract":"This paper evaluates the user capacity performance analysis of pico-cells and macro-cells in multiple-input multiple-output heterogeneous LTE-Advanced networks. The analysis makes use of state-of-the-art 3D ray-tracing for a large number of pico and macro-cell base station and user locations. A baseband 2×2 MIMO LTE-A link level simulator via 3D extended channel model was designed and implemented in MATLAB to determine the user performance in pico-cells and macro-cells for line-of-sight links and non-line-of-sight link. The received bit mutual information rate abstraction method is used to determine the optimum physical layer throughput based on analysis of all available modulation and coding schemes. Packet error rate and optimum capacity per meter squared are evaluated for pico-cellular and macro-cellular users. Results show that the deployment of pico-cells can be used to improve existing macro network capacity and performance in an LTE-Advanced network.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129205600","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}
Erfan Shaghaghi, A. Jalooli, Rozita Aboki, Ali Marefat, R. M. Noor
{"title":"Intelligent traffic signal control for urban central using Vehicular Ad-Hoc Network","authors":"Erfan Shaghaghi, A. Jalooli, Rozita Aboki, Ali Marefat, R. M. Noor","doi":"10.1109/APWIMOB.2014.6920297","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920297","url":null,"abstract":"The current study proposes a novel real-time traffic signal controlling system which takes advantage of Vehicular Ad-hoc Network (VANET). The proposed system comprises two main phases. The first phase includes estimation of vehicles' density in road segment leading to intersection by utilizing the combination of Vehicle-to-Vehicle (V2V) communication and Vehicle-to-Infrastructure (V2I) communication for transferring the acquired information to the Traffic Controller. The second phase contains assessment and analysis of obtained data from the first part to create various adaptive traffic signal cycles to control the traffic congestion. The most distinct capability of this approach which makes it more effective in comparison with its rival approaches, is controlling the traffic flow of vehicles in adjacent intersections by considering the future destination of vehicles and anticipation in traffic signal timing of contiguous intersections. The simulation results demonstrate the efficiency of proposed method in comparison with one of the known VANET-based traffic signal controlling systems methods named MC_DRIVE from the matter of reduction in communication overhead, relative delay of the vehicles in the intersection and accuracy of vehicles' density estimation.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131001316","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}
{"title":"WiFi-assisted human activity recognition","authors":"Yu Gu, Lianghu Quan, Fuji Ren","doi":"10.1109/APWIMOB.2014.6920266","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920266","url":null,"abstract":"This paper investigates the indoor activity recognition issue and proposes a novel recognition framework by exploring WiFi ambient signals. The key idea is to use data mining techniques to abstract footprints of different activities on the radio signal strength (RSS) data. Our experiments show that even using a single feature and the common k-NN classifier activities such as walking, sitting and standing can be recognized with a high accuracy, i.e. 75%. To further improve the performance, a new feature has been abstracted to represent the fluctuation of sampled data and a novel algorithm named fusion algorithm has been specifically designed based on the classification tree. Experiments show that the proposed fusion algorithm significantly outperforms the k-NN classifier in terms of both the average recognition ratio (from 75% to 92.58%) and the computational complexity. Compared to previous solutions relying on either special hardware or the cooperation of tested subjects, the proposed recognition framework is a passive and device-free solution that could be integrated into any WLAN network with low overheads.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133007931","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}
Kazuhiro Yamaguchi, Mitsumasa Saito, Kohei Miyasaka, H. Matsue
{"title":"Design and performance of a 24 GHz band FM-CW radar system and its application","authors":"Kazuhiro Yamaguchi, Mitsumasa Saito, Kohei Miyasaka, H. Matsue","doi":"10.1109/APWIMOB.2014.6920270","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920270","url":null,"abstract":"This paper describes a design and performance of a FM-CW (Frequency Modulated Continuous Wave) radar system using 24 GHz band. The principle for measuring the distance and the small displacement of target object is described, and the differential detection method for detecting the only target is proposed under the environments which multiple objects are located. In computer simulation, the basic performance of FM-CW radar system is analyzed about the distance resolution and error value according to the various sampling time and sweep bandwidth. Furthermore, the FM-CW radar system with the proposed differential detection method can clearly detect only the target object under the multiple object environment, and the small displacement within 3.11 mm can be measured. In experiment, the performance about measuring the distance and displacement is described by using the designed 24 GHz FM-CW radar system. As the results, it is confirmed that 24 GHz FM-CW radar system with the proposed differential detection method is effective for measuring target under the environments which multiple objects are located.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133949204","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}
{"title":"A ZigBee controlled lighting system with improved resistance to wireless interference","authors":"Jun Yao, Zhizhong Zhang, P. Dong, K. Holtman","doi":"10.1109/APWIMOB.2014.6920294","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920294","url":null,"abstract":"Various wireless technologies, such as Wi-Fi, Bluetooth, and ZigBee (802.15.4), work in the 2.4GHz ISM (industrial, scientific and medical) band. As a low cost and low power wireless protocol, ZigBee is easy to be interfered by the other wireless communications such as Wi-Fi. In this paper, a new system architecture for ZigBee controlled lighting system is proposed to protect ZigBee networks against Wi-Fi interference. A router controller instead of an end-device remote controller is used to send the commands to all other nodes. In addition, a new algorithm called ZPA is adopted in the router controller by utilizing the RTS/CTS mechanism of Wi-Fi devices. Theoretical analysis indicates the packet loss rate is reduced by two aspects of this new architecture: Improved SINR and short collision time. Experiments on our testbed show that this system architecture is effective to reduce the PER of ZigBee networks under Wi-Fi interference. Especially, only requiring modifications to the router controller is practical for realistic deployment of ZigBee controlled lighting system.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124043257","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}
K. Kosaka, K. Takakusaki, I. Kanno, Akio Hasegawa, H. Shinbo, Y. Takeuchi
{"title":"Evaluation of influence by simultaneous reception of other radio systems in wideband NC-OFDM","authors":"K. Kosaka, K. Takakusaki, I. Kanno, Akio Hasegawa, H. Shinbo, Y. Takeuchi","doi":"10.1109/APWIMOB.2014.6920316","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920316","url":null,"abstract":"We are studying Wideband Non-Contiguous OFDM (WNC-OFDM) to utilize unused frequency bands. WNC-OFDM achieves high-speed communication by gathering OFDM subcarriers on the unused frequency resources that are located dispersively and narrowly in extremely wide bands. In this case, since a WNC-OFDM receiver receives not only the desired WNC-OFDM signals but also undesired signals of other systems simultaneously, WNC-OFDM signals are affected by the interference from the signals of other radio systems. It is important to comprehend the influences from other radio systems and tolerance for them to design and tune WNC-OFDM transceivers. In this paper, we evaluate the influences in a WNC-OFDM receiver by developed experimental equipment and computer simulations.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129300980","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}
Gandeva Bayu Satrya, I. K. G. Wirya Jaya, N. Cahyani
{"title":"The analysis and implementation of aging method on packet scheduling algorithm in WiMAX network","authors":"Gandeva Bayu Satrya, I. K. G. Wirya Jaya, N. Cahyani","doi":"10.1109/APWIMOB.2014.6920264","DOIUrl":"https://doi.org/10.1109/APWIMOB.2014.6920264","url":null,"abstract":"People usually use high-speed internet access in wired network. WiMAX technology in this case IEEE 802.16 standard has the ability to provide high-speed wireless internet access. WiMAX technology has standards such as IEEE 802.16d for fixed networks and the IEEE 802.16e WiMAX network for both mobile and fixed networks. There are several service classes that must be provided in WiMAX networks, such as UGS, ertPS, ertPS, nrtPS, and BE. In order to meet the required service classes, packet scheduling algorithm is needed. This article will discuss the analysis and implementation of Aging methods on WFQ algorithm on packet scheduling in WiMAX networks. This method is expected to reduce packet drop to provide quality of service (QoS) from five service classes.","PeriodicalId":177383,"journal":{"name":"2014 IEEE Asia Pacific Conference on Wireless and Mobile","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115374788","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}