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2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications最新文献

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i-LightHouse: A Visible Light Communication system for the visually impaired i-LightHouse:专为视障人士而设的可见光通讯系统
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139651
A. Funahashi, Kentaro Kobayashi, Hiraku Okada, M. Katayama
{"title":"i-LightHouse: A Visible Light Communication system for the visually impaired","authors":"A. Funahashi, Kentaro Kobayashi, Hiraku Okada, M. Katayama","doi":"10.1109/PIMRC.2011.6139651","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139651","url":null,"abstract":"This paper introduces a Visible Light Communication (VLC) system using an LED sign panel, which allows the provision of broadcast-type information in public spaces. This system provides an additional function to an LED advertisement panel; the panel not only displays an advertisement, but also transmits wirelessly to other devices. We suggest its use in benefit of the visually impaired. They can obtain local information by using this system, named i-LightHouse (i-LH). For this purpose, i-LH transmits a long-range navigation signal to direct users to the LED sign panel and a short-range signal to download content information to the users' devices. We propose its modulation scheme which can multiplex the navigation and content information at the same time. In this system, the interruption by a passerby and ambient lights may degrade the communication performance. On these issues, we propose an error correcting method and a filter to mitigate the interference of them and evaluate the effectiveness.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126307889","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}
引用次数: 3
A new digital predistorter linearizer for wide band signals 一种新型宽带信号数字预失真线性化器
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139727
A. N. Lozhkin, Michiharu Nakamura
{"title":"A new digital predistorter linearizer for wide band signals","authors":"A. N. Lozhkin, Michiharu Nakamura","doi":"10.1109/PIMRC.2011.6139727","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139727","url":null,"abstract":"This paper presents a new method of digital adaptive predistortion for linearization of high-power amplifiers (HPAs) that mitigates linearization performance deterioration due to bandwidth limitation of feedback path. With increases of signal bandwidth, the effects of limited bandwidth of the predistorter feedback path cannot be ignored. In the proposed algorithm, adaptation is derived from direct learning for the lookup table (LUT) gains. According to the proposed approach, when the LUT contents are adapted according to an LMS algorithm, several other LUT entries adjacent to the currently processed entry are also updated. However, the level of adaption for adjacent entries is less than for the currently processed entry. This level is defined by the preselected window weight function. The proposed algorithm makes it possible to design a low-complexity, memoryless adaptive predistortion system with narrowband feedback path to compensate for the nonlinearity of an HPA.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122264407","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}
引用次数: 5
Improving CoMP cluster feasibility by dynamic serving base station reassignment 通过动态服务基站重新分配提高CoMP集群的可行性
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139716
T. Biermann, L. Scalia, Changsoon Choi, H. Karl, W. Kellerer
{"title":"Improving CoMP cluster feasibility by dynamic serving base station reassignment","authors":"T. Biermann, L. Scalia, Changsoon Choi, H. Karl, W. Kellerer","doi":"10.1109/PIMRC.2011.6139716","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139716","url":null,"abstract":"Coordinated Multi-Point (CoMP) transmission/reception, and especially Joint Processing (JP), is a promising solution for managing interference in cellular mobile access networks. Its successful deployment, however, strongly depends on the capability of the backhaul infrastructure as strict capacity and latency requirements have to be fulfilled.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121250105","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}
引用次数: 5
Controlling coupling between two transmitting antennas for MIMO handset applications 控制MIMO手机应用中两个发射天线之间的耦合
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139876
Shirook M. Ali, James Warden
{"title":"Controlling coupling between two transmitting antennas for MIMO handset applications","authors":"Shirook M. Ali, James Warden","doi":"10.1109/PIMRC.2011.6139876","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139876","url":null,"abstract":"We introduce a method to control mutual coupling and correlation between two transmitting antennas for multi-antenna applications in the handset. The method is based on controlling the forward and the back-scattering currents at the antenna ports taking each antenna's driving point impedance into account. We achieve this using a six-section connection circuit that is placed between the multi-antenna system ports and the rest of the transceivers. The method is presented through application to a printed two-monopole antenna example and is implemented in a number of ways showing the technique's flexibility. An improvement in the mutual coupling ranging between 4–10 dB was achieved. The technique is general and does not require the MIMO problem to be symmetric, i.e., it can be implemented to MIMO systems with different antenna types.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116733550","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}
引用次数: 3
Controlling the interference from multiple secondary systems at the TV cell border 控制电视小区边界多个二次系统的干扰
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6140042
K. Koufos, K. Ruttik, R. Jäntti
{"title":"Controlling the interference from multiple secondary systems at the TV cell border","authors":"K. Koufos, K. Ruttik, R. Jäntti","doi":"10.1109/PIMRC.2011.6140042","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6140042","url":null,"abstract":"The main requirement for secondary operation over the TV white spaces is interference control. In this paper, we propose an interference control scheme that allows multiple secondary systems to maintain their aggregate interference at the TV receivers under specific protection limits. The main characteristic of the proposed scheme is the small signaling overhead required for the cooperation between the secondary systems. The secondary systems need only to communicate their locations to a central network controller. The controller can then allocate the transmission power levels to the different systems such that the TV receivers are sufficiently protected. At the same time, the sum of the transmission power levels allocated to the secondary systems is maximized.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116742274","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}
引用次数: 21
Uplink femto-macro ICIC with semi-centralized power control 上行飞宏ICIC与半集中电源控制
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139738
J. Guillet, L. Brunel, N. Gresset
{"title":"Uplink femto-macro ICIC with semi-centralized power control","authors":"J. Guillet, L. Brunel, N. Gresset","doi":"10.1109/PIMRC.2011.6139738","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139738","url":null,"abstract":"Inter-cell interference is a major issue in current wireless cellular systems, in particular with the development of femto-cells. We propose a semi-centralized uplink femto-macro ICIC approach with low network signalling in which a coordinator defines a power control function for all femto base stations in a given area based on long-term statistics they build. The power control function takes path gains as arguments and the transmit power of each femto mobile terminal is set according to the short-term path gains it reports. The proposed power control function achieves good results in terms of femto-macro performance trade-off and mobile terminal transmit power.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125324911","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}
引用次数: 3
MSE-based orthogonal beamformer design for interference alignment in a MU-MIMO cellular network 基于mse的MU-MIMO蜂窝网络干扰对准正交波束形成器设计
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139833
M. Torabi, J. Frigon, C. Cardinal
{"title":"MSE-based orthogonal beamformer design for interference alignment in a MU-MIMO cellular network","authors":"M. Torabi, J. Frigon, C. Cardinal","doi":"10.1109/PIMRC.2011.6139833","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139833","url":null,"abstract":"In this paper we consider an Interference Alignment (IA) approach for intercell interference coordination for the downlink of a MIMO multi-user cellular network. We determine the maximum degrees of freedom (DoF) of the network and give the feasibility proof of perfect IA. Furthermore, we consider the problem of approximate IA and the Mean-Squared Error (MSE) based optimization of the transmit and receive beamforming matrices with the orthogonality constraints and the per-antenna transmit power constraint. Iterative algorithms are presented to solve the corresponding MSE problems. Simulation results and convergence analysis of the algorithms are also discussed. The results indicate that it is feasible to significantly increase the network capacity using the proposed IA approach.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115176272","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}
引用次数: 3
Linear dispersion codes design for asynchronous cooperative communications 异步协作通信的线性色散码设计
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139883
Wenjin Wang, F. Zheng
{"title":"Linear dispersion codes design for asynchronous cooperative communications","authors":"Wenjin Wang, F. Zheng","doi":"10.1109/PIMRC.2011.6139883","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139883","url":null,"abstract":"In this paper, we study the design of linear dispersion codes (LDCs) for asynchronous cooperative communication networks. Firstly, the concept of conventional LDCs is extended to the delay-tolerant version and new design criteria are discussed. Then we propose a new design method to yield delay-tolerant LDCs that approach near-optimal capacity as well as minimum average pairwise error probability. The proposed design employs stochastic gradient algorithm to guarantee the local optimum. Moreover, it is improved by using simulated annealing type optimization to approach the global optimum. The proposed method allows flexible number of nodes, receive antennas, the length of codewords and the number of modulated symbols. Simulation results confirm the performance of the newly-proposed delay-tolerant LDCs.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122901179","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}
引用次数: 2
Action-based scheduling technique for 802.15.4/ZigBee wireless body area networks 802.15.4/ZigBee无线体域网络的基于动作的调度技术
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139904
Pooyan Abouzar, K. Shafiee, D. Michelson, Victor C. M. Leung
{"title":"Action-based scheduling technique for 802.15.4/ZigBee wireless body area networks","authors":"Pooyan Abouzar, K. Shafiee, D. Michelson, Victor C. M. Leung","doi":"10.1109/PIMRC.2011.6139904","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139904","url":null,"abstract":"Energy-efficient communication protocols in resource-constrained networks and specifically wireless body area networks (WBANs) has been of significant importance since they emerged nearly last decade. In this work, we use the periodic nature of body actions to propose an action-based scheduling technique in which time-slot allocations are adapted to the periodic connectedness of on-body links. In other words, the periodicity of on-body links is employed to predict the future behaviours of links to help develop energy-efficient communications between on-body nodes, thereby elongating the network lifetime. Analysis and measurement with 2.4GHz IEEE 802.15.4/ZigBee compliant micaZ motes in a fitness environment serve as our tool to do action recognition and subsequently scheduling. The proposed technique helps us reach within less than 7% of power consumption lower bound while it does not have complexity of most channel prediction algorithms that can result in excessive process power consumption.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131763916","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}
引用次数: 9
Cooperative game theory and auctioning for spectrum allocation in cognitive radios 认知无线电频谱分配的合作博弈论与拍卖
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6140044
Jayaprakash Rajasekharan, J. Eriksson, V. Koivunen
{"title":"Cooperative game theory and auctioning for spectrum allocation in cognitive radios","authors":"Jayaprakash Rajasekharan, J. Eriksson, V. Koivunen","doi":"10.1109/PIMRC.2011.6140044","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6140044","url":null,"abstract":"This paper addresses the problem of spectrum sharing in cognitive radios where secondary users (SUs) cooperatively sense the spectrum for identifying and accessing unoccupied spectrum bands. It is shown that spectrum sensing and sharing scenario can be modeled as a transferable utility (TU) cooperative game and that Vickrey-Clarke-Groves (VCG) auction mechanism can be used to allocate spectrum resources fairly to each user. SUs form coalitions to jointly sense the spectrum. The worth of each SU is calculated according to the work done for the coalition in terms of the information obtained about primary user (PU) activity from sensing the spectrum. The resulting games are balanced and superadditive and each SU gets a pay-off according to her worth in the coalition. Depending upon their spectrum needs, SUs use this pay-off to bid for unoccupied bands of spectrum through an VCG auction. VCG auction mechanism provides SUs with an incentive to bid truthfully according to their demand and is socially optimal. The concepts and results are illustrated using a simple example.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131764142","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}
引用次数: 8
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