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Generalized Williamson and Wallis-Whiteman constructions for improved square order-8 CO STBCs 改进的平方阶-8 CO stbc的广义Williamson和Wallis-Whiteman构造
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2005-09-11 DOI: 10.1109/PIMRC.2005.1651622
Le Chung Tran, T. Wysocki, J. Seberry, A. Mertins, Sarah Spence Adams
{"title":"Generalized Williamson and Wallis-Whiteman constructions for improved square order-8 CO STBCs","authors":"Le Chung Tran, T. Wysocki, J. Seberry, A. Mertins, Sarah Spence Adams","doi":"10.1109/PIMRC.2005.1651622","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651622","url":null,"abstract":"Constructions of square, maximum rate complex orthogonal space-time block codes (CO STBCs) are well known, however codes constructed via the known methods include numerous zeros, which impede their practical implementation. By modifying the Williamson and Wallis-Whiteman arrays to apply to complex matrices, we propose two methods of construction or square, order-4n CO STBCs from square, order-n codes, which satisfy certain properties. Applying the proposed methods, we construct square, maximum rate, order-8 CO STBCs with no zeros, such that the transmitted symbols equally disperse through transmit antennas. Those codes, referred to as the improved square CO STBCs, have the advantages that the power is equally transmitted via each transmit antenna during every symbol time slot and that a lower peak-to-mean power ratio per each antenna is required to achieve the same bit error rates as for the conventional CO STBCs with zeros","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115041115","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
The WINNER (wireless world initiative new radio) project-development of a radio interface for systems beyond 3G WINNER(无线世界新无线电倡议)项目——为超过3G的系统开发无线电接口
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2005-09-11 DOI: 10.1109/PIMRC.2005.1651564
W. Mohr
{"title":"The WINNER (wireless world initiative new radio) project-development of a radio interface for systems beyond 3G","authors":"W. Mohr","doi":"10.1109/PIMRC.2005.1651564","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651564","url":null,"abstract":"WINNER is an international research project under framework program 6 (FP6) of the European Commission. The main objective is the development of the new radio interface for systems beyond 3G. WINNER is part of the wireless world initiative (WWI), which is a series of cooperating projects in FP6 to develop future systems including all entities from a system perspective. The project is developing all system functions from layer 1 to 3 including cooperation mechanisms with legacy systems as part of the overall architecture for systems beyond 3G. Based on usage scenarios and propagation investigations technical requirements are derived. The physical layer and higher layer protocols are designed. A new broadband radio interface requires newly identified frequency spectrum. WINNER is contributing to the international regulatory process in ITU-R towards the preparation of WRC 2007. This paper provides an overview about the WINNER project and its activities","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124154822","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: 28
Challenges in the verification of mobile ad-hoc networking systems 移动自组织网络系统验证中的挑战
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2005-09-11 DOI: 10.1109/PIMRC.2005.1651654
Richard J. Folio, J. Cain, S. Kota
{"title":"Challenges in the verification of mobile ad-hoc networking systems","authors":"Richard J. Folio, J. Cain, S. Kota","doi":"10.1109/PIMRC.2005.1651654","DOIUrl":"https://doi.org/10.1109/PIMRC.2005.1651654","url":null,"abstract":"MANET techniques are critical to the success of emerging modern warfare concepts and are required to support communications for mobile military platforms, including ships, aircrafts, and ground vehicles operating in a highly dynamic and mobile tactical communications network without fixed infrastructure. Research in Mobile Ad Hoc Networking has increased dramatically over the last few years with significant work in hardware architectures, media access routing, and protocols. Until now, most of the work has been in simulation and small-scale laboratory demonstrations due to the significant resources required to implement an actual network with sufficient nodes to fully exercise the capabilities of both the hardware and software. Harris has built a flexible demonstration environment that enables the exercising of numerous network functions while still accomplishing research and development of the network protocols. The testbed, assumed in this paper, allows the system to be exercised in an outdoor environment that closely approximates the physical environment that the system will be operated in","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123503187","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: 0
Distributed and energy efficient self-organization for on-off wireless sensor networks 开关无线传感器网络的分布式节能自组织
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1370866
Liang Zhao, Q. Liang
{"title":"Distributed and energy efficient self-organization for on-off wireless sensor networks","authors":"Liang Zhao, Q. Liang","doi":"10.1109/PIMRC.2004.1370866","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1370866","url":null,"abstract":"We utilize clustering to achieve energy efficiency for an on-off wireless sensor network, whose member nodes alternate between active and inactive states. In the proposed distributed and energy efficient self-organization (DEESO) scheme, the head election is adjusted adaptively to the energy reserve of local active nodes. Furthermore, we apply adaptive channel assignment to address the on-off topology changes. Simulation results show that DEESO delivers 184% amount of data to the base station compared to LEACH (low energy adaptive clustering hierarchy) for the same amount of dissipation and the effective network lifetime is extended by around 56%.","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127860298","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
An architecture enabling BluetoothTM/JiniTM interoperability 一个支持BluetoothTM/JiniTM互操作性的体系结构
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368873
O. Chau, Pan Hui, Victor O. K. Li
{"title":"An architecture enabling BluetoothTM/JiniTM interoperability","authors":"O. Chau, Pan Hui, Victor O. K. Li","doi":"10.1109/PIMRC.2004.1368873","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368873","url":null,"abstract":"Service discovery protocols allow clients to discover services without actual knowledge of the locations or characteristics of the services. Jini and Bluetooth SDP are two common service discovery protocols. They may meet each other in many environments. But there is still no general architecture to bring them together. We introduce an architecture for Bluetooth client to discover Jini services. We introduce the Jini/sup TM/ profile for Bluetooth, which runs in three modes of operations, namely, surrogate, bridge, and client. We describe the implementation of a Jini/Bluetooth surrogate as well as the bridge which acts as a proxy and allows a multihop connection to a Jini network. To enable reliable end to end connection, we also incorporate session management into our design.","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122753370","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: 0
Comparison of MIMO channels from multipath parameter extraction and direct channel measurements 从多径参数提取和直接信道测量的MIMO信道的比较
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368264
A. Pal, Chor Min Tan, Mark A. Beach
{"title":"Comparison of MIMO channels from multipath parameter extraction and direct channel measurements","authors":"A. Pal, Chor Min Tan, Mark A. Beach","doi":"10.1109/PIMRC.2004.1368264","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368264","url":null,"abstract":"This work presents a MIMO throughput performance analysis of dynamic wideband double-directional channel measurements that were recently obtained by the University of Bristol. Identical 16-element uniform circular arrays (UCAs) were employed at both ends of the link and the parameters of the multipath components (MFCs) were extracted. In this paper, the performance analyses of several 4/spl times/4 subarrays of the 16/spl times/16 measurement arrays are presented. The MIMO response of these channels was synthesised from the extracted MFCs. A comparison is then made between the capacity estimates from the directly measured and synthesised MIMO channels. This was found to show good agreement.","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122347230","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: 0
Energy optimization in multihop wireless embedded and sensor networks 多跳无线嵌入式和传感器网络中的能量优化
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1370868
Z. Shelby, C. Pomalaza-ráez, J. Haapola
{"title":"Energy optimization in multihop wireless embedded and sensor networks","authors":"Z. Shelby, C. Pomalaza-ráez, J. Haapola","doi":"10.1109/PIMRC.2004.1370868","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1370868","url":null,"abstract":"The paper provides an analytical model for the study of energy consumption in multihop wireless embedded and sensor networks. The nodes in this type of network are battery-powered and therefore must be extremely frugal with their energy budget. The networks usually have a large number of nodes whose deployment and topology is application dependent. Low-power optimization techniques developed for conventional ad hoc networks are not sufficient as they do not properly address particular features of embedded and sensor networks. As well as reducing overall energy consumption, it is also important to maximize the network lifetime, that is, maintain full network connectivity for as long as possible. The paper considers different multihop scenarios to compute the energy per bit, efficiency, and the energy consumed by individual nodes and by the whole network. The analysis uses a detailed model for the energy consumed by the radio at each node. Multihop topologies with equidistant and optimal node spacing are studied. Numerical computations illustrate the effects of packet routing. These results show that using a simple multihop message relay strategy is not always a good procedure to extend a network's lifetime. Depending on the radio hardware characteristics and on the topology, direct relay to a sink or a routing mechanism that bypasses intermediate nodes can sometimes be the recommended procedure.","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130625990","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: 11
Ultra wideband signal impact on IEEE802.11b and Bluetooth performances 超宽带信号对IEEE802.11b和蓝牙性能的影响
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2003-09-07 DOI: 10.1109/PIMRC.2003.1264277
M. Hämäläinen, Jani Saloranta, Juha-Pekka Mäkelä, I. Oppermann, Tero Patana
{"title":"Ultra wideband signal impact on IEEE802.11b and Bluetooth performances","authors":"M. Hämäläinen, Jani Saloranta, Juha-Pekka Mäkelä, I. Oppermann, Tero Patana","doi":"10.1109/PIMRC.2003.1264277","DOIUrl":"https://doi.org/10.1109/PIMRC.2003.1264277","url":null,"abstract":"This paper presents the results of a co-existence study investigating the impact of ultra wideband (UWB) interference on IEEE802.11b and Bluetooth networks. Results are based on the experimental test measurements made at the University of Oulu, Finland using simple high power UWB transmitter prototypes as interference sources. Preliminary results showed that, under the extreme conditions of this experiment, both IEEE802.11b and Bluetooth networks will slightly suffer from the existence of several high proximity UWB signals. In our study, several high power UWB transmitters that greatly exceed the FCC radiation regulations have been used, and the measurement settings presents the worst case scenario due to the very short distance between the interferers and the victim system. Effectively our study indicates the use of hundreds of FCC compatible UWB devices at a same space.","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129226423","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: 10
Experiences with an inbuilding location tracking system: Uhuru 使用建筑内部位置跟踪系统的经验:Uhuru
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2003-09-07 DOI: 10.1109/PIMRC.2003.1259252
V. Abhijit, C. Ellis, Xiaobo Fan
{"title":"Experiences with an inbuilding location tracking system: Uhuru","authors":"V. Abhijit, C. Ellis, Xiaobo Fan","doi":"10.1109/PIMRC.2003.1259252","DOIUrl":"https://doi.org/10.1109/PIMRC.2003.1259252","url":null,"abstract":"The increasing functionality that handheld devices have come to incorporate at lower prices make them powerful candidates for various kinds of location-aware systems and services. In this work, we describe the innards of Uhuru, an RF based in-building location tracking system that we have developed and deployed on a mobile device. Our work seeks to build upon and extend previous work in this field, providing proof of concept for location information on multiple floors in a building. We outline a history monitoring algorithm that we have devised to improve the accuracy of the system and introduce a new metric of 'Survivability', which measures the ability of history-based location tracking schemes to be able to display location information consistently. We also discuss details of a heuristic that can be used for the placement of wireless base stations to improve the delivered accuracy.","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116190621","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: 7
Control using capacity constraints for interfering MIMO links 使用容量约束控制干扰MIMO链路
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2002-12-10 DOI: 10.1109/PIMRC.2002.1045184
M. Demirkol, M. A. Ingram
{"title":"Control using capacity constraints for interfering MIMO links","authors":"M. Demirkol, M. A. Ingram","doi":"10.1109/PIMRC.2002.1045184","DOIUrl":"https://doi.org/10.1109/PIMRC.2002.1045184","url":null,"abstract":"This paper considers joint optimization of power and array weights for a set of interfering cochannel links, given the desired capacity for each link. All transmitters and receivers are assumed to have array antennas. An iterative method for determining the link parameters is given. In this method, the desired capacities for the interfering links are the control parameters. It is also shown that the iterative method does not maximize the network throughput. Reducing the number of independent data streams for each link may enhance the network performance.","PeriodicalId":161972,"journal":{"name":"IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123508419","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: 32
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