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System Considerations for a Combined UMTS/GNSS Receiver UMTS/GNSS联合接收机的系统考虑
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353633
G. Heinrichs, J. Winkel, C. Drewes, L. Maurer, A. Springer, R. Stuhlberger, C. Wicpalek
{"title":"System Considerations for a Combined UMTS/GNSS Receiver","authors":"G. Heinrichs, J. Winkel, C. Drewes, L. Maurer, A. Springer, R. Stuhlberger, C. Wicpalek","doi":"10.1109/WPNC.2007.353633","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353633","url":null,"abstract":"This paper introduces a hybrid receiver architecture for user equipment positioning by using UMTS and GNSS signals. After a review of the UMTS and Galileo/GPS signal structures and the state-of-the-art in receiver RF and base-band architectures, a configurable GNSS/UMTS architecture is proposed. The investigated concept is based on a reconfigurable receive chain to prevent duplication of hardware, which will result in considerably lower costs. The biggest challenge in the design of Galileo receivers are the extremely tight noise figure (NF) requirements. Another key issue of integrated GNSS/UMTS receivers is the maximum tolerable UMTS transmit leakage injected into the Galileo receiver.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133500147","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
IMM Estimator for Maneuvering Target Tracking in GSM Networks GSM网络中机动目标跟踪的IMM估计
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353624
Miao Zhang, S. Knedlik, O. Loffeld
{"title":"IMM Estimator for Maneuvering Target Tracking in GSM Networks","authors":"Miao Zhang, S. Knedlik, O. Loffeld","doi":"10.1109/WPNC.2007.353624","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353624","url":null,"abstract":"Global system for mobile communications (GSM) networks can provide position information. For the application of tracking ground target, the target should be regarded as maneuvering target since the state to be estimated may change dramatically due to the restriction of terrain, road, traffic, and so on. It is well known that multiple model (MM) estimation is a powerful approach for such a hybrid estimation problem. In this paper, we consider this target motion uncertainty problem in GSM environment. Interacting MM (IMM) estimator is analyzed and the estimation results of three different simulated scenarios are evaluated by the corresponding posterior Cramer-Rao lower bound (PCRB) and compared with single model method of using one nearly constant velocity (CV) model. The comparisons show that IMM estimator reduce the estimation errors during the non-maneuvering period.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131842644","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
SLL: Statistical Conditions and Algebraic Properties 统计条件与代数性质
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353621
B. B. Parodi, H. Lenz, A. Szabo, J. Bamberger, J. Horn
{"title":"SLL: Statistical Conditions and Algebraic Properties","authors":"B. B. Parodi, H. Lenz, A. Szabo, J. Bamberger, J. Horn","doi":"10.1109/WPNC.2007.353621","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353621","url":null,"abstract":"Common approaches for indoor positioning based on cellular communication systems use the received signal strength (RSS) as measurements. In order to work properly, such a system often requires many calibration points before its start. Applying simultaneous localization and learning (SLL) a self-calibrating RSS-based positioning system can be realized. Clearly, SLL avoids the requirement for manually obtained reference measurements. This paper explores the algebraic and statistical conditions required to perform the SLL approach. Firstly, as basis of the analysis a closed form of SLL is introduced. As main result of this paper the algebraic and statistical conditions are revealed that need to be satisfied such that SLL can successfully be utilized, leading to a self-calibration of RSS-based positioning systems. While the analysis is restricted to the one-dimensional case and although the extension of the analysis to higher dimensions is more complex, the results can straightforwardly be extended to the more-dimensional cases.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130348689","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: 4
UWB regulatory compliant synchronization signal for indoor broadcast 符合UWB规定的室内广播同步信号
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353632
C. Laderrière, M. Heddebaut, Nicolas Rocher, A. Rivenq, F. Elbahhar, J. Rouvaen
{"title":"UWB regulatory compliant synchronization signal for indoor broadcast","authors":"C. Laderrière, M. Heddebaut, Nicolas Rocher, A. Rivenq, F. Elbahhar, J. Rouvaen","doi":"10.1109/WPNC.2007.353632","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353632","url":null,"abstract":"Synchronization is an essential problem in numerous fields of application such as for communication and localization purposes. Emergent ultra wide band (UWB) technology based on impulse radio (UWB-IR) is currently investigated to broadcast synchronization signals in indoor environments, thus paving technically the way for the emergence of location based services. It considers that short duration pulses emission offer a high potential to recover reliable timing accuracy, but also to propagate efficiently in constraint environments. In this paper, we propose a basic signal structure implementation dedicated to multiple sources synchronization purposes. Main signal parameters influence will be covered and analyzed according to UWB current regulatory requirements. Based on an implemented overall transmission link and its regulatory compliant set of signal characteristics, radio coverage will then be evaluated.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116126122","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: 1
Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling 利用GSM下行信令的移动终端速度估计
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353637
S. Peschke, Reinhold Häb-Umbach
{"title":"Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling","authors":"S. Peschke, Reinhold Häb-Umbach","doi":"10.1109/WPNC.2007.353637","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353637","url":null,"abstract":"In this paper, we experimentally evaluate algorithms for velocity estimation of a GSM 900 mobile terminal which are based on the analysis of the statistical properties of the fast fading process. It is shown how theses statistics can be obtained from the training sequences present in downlink transmission bursts without establishing an active connection. Realistic simulations of a GSM channel according to the COST 207 channel models have been conducted. These models incorporate effects like multipath propagation, fading, cochannel interference and additive noise. It is shown that velocity estimation by searching for the maximum slope of the power density spectrum of the fast fading performs best.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129363004","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: 1
A Novel Mobile Positioning Algorithm Based on Environment Estimation 一种新的基于环境估计的移动定位算法
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353636
Özgün Bayrak, C. Temizyurek, M. Barut, Onur Türkyilmaz, Gürkan Gür
{"title":"A Novel Mobile Positioning Algorithm Based on Environment Estimation","authors":"Özgün Bayrak, C. Temizyurek, M. Barut, Onur Türkyilmaz, Gürkan Gür","doi":"10.1109/WPNC.2007.353636","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353636","url":null,"abstract":"In this paper, we propose a novel mobile positioning algorithm based on estimation of radio propagation environment in cellular networks. Accurate and effective mobile positioning is imperative for successful location based services (LBS). Since radio propagation characteristics vary in different environments, knowing the environment of the mobile user is essential for accurate location estimation. The key feature of our algorithm is its capability to estimate the environment of the mobile user and utilize this information for enhancing Received Signal Strength (RSS) based distance calculations. The proposed algorithm has been evaluated using field measurements collected from a GSM network in diverse geographic locations. Typical examples and measurements statistics are provided. The proposed algorithm turns out to be significantly successful, achieving high estimation accuracy, and thereby enabling high-performance mobile positioning.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130365664","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
A Novel Indoor Location Sensing Mechanism for IEEE 802.11 b/g Wireless LAN 一种新的IEEE 802.11 b/g无线局域网室内位置感知机制
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353605
Shahid Ali, P. Nobles
{"title":"A Novel Indoor Location Sensing Mechanism for IEEE 802.11 b/g Wireless LAN","authors":"Shahid Ali, P. Nobles","doi":"10.1109/WPNC.2007.353605","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353605","url":null,"abstract":"Wireless LAN, now a day exists in most of the organizations. Hardware is inexpensive to buy and easily available off-the-shelf. More and more offices, organizations and public places are installing it for its ease of utilization. Developing location aware services using WLAN has therefore gained tremendous interest in recent years. It is however, still a daunting challenge for the research community to improve location accuracy inside a building to a few meters by means of computing path loss to find distances based on signal strength of a received RF signal. The accuracy offered by various top-of the-range products using signal strength methods within the indoor environment is not very good. This paper presents a novel method to achieve improved consistency in received signal strength of an RF signal by effectively reducing the multi-path affect on RF propagation inside the building, thus enabling development of better location estimation system.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121363467","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: 38
Synchronization Algorithms for Positioning with OFDM Communications Signals 利用OFDM通信信号定位的同步算法
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353635
C. Mensing, S. Plass, A. Dammann
{"title":"Synchronization Algorithms for Positioning with OFDM Communications Signals","authors":"C. Mensing, S. Plass, A. Dammann","doi":"10.1109/WPNC.2007.353635","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353635","url":null,"abstract":"This paper covers positioning techniques for cellular networks using orthogonal frequency division multiplexing (OFDM) communications signals. These methods are based on symbol-timing synchronization algorithms to find the starting point for the underlying OFDM symbols of the incident signals. Commonly used approaches are, e.g., the Schmidl-Cox algorithm and the Minn algorithm. These algorithms are investigated w.r.t. their positioning capabilities. Furthermore, they are extended to improve the performance in multipath environments and to achieve a sufficient accuracy with weak signals from neighboring out-of-cell base stations.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117171787","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: 29
NLOS detection algorithms for Ultra-Wideband localization 超宽带定位的NLOS检测算法
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353628
J. Schroeder, S. Galler, K. Kyamakya, K. Jobmann
{"title":"NLOS detection algorithms for Ultra-Wideband localization","authors":"J. Schroeder, S. Galler, K. Kyamakya, K. Jobmann","doi":"10.1109/WPNC.2007.353628","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353628","url":null,"abstract":"Non Line of Sight (NLOS) channels are one of the major drawbacks for accurate ranging and localization with Ultra-Wideband (UWB) technology. Whereas several proposals exist to detect these situations, a comprehensive overview, investigation and testing of these methods has to the authors' knowledge not yet been prepared. This paper tries to fill this gap with a classification of the algorithms proposed of the UWB and mobile phone community. In addition, one novel method based on the signal power variation is suggested. Afterwards, the methods are evaluated regarding their practicability for real UWB localization systems, which excludes some of them from further investigation. For the remaining algorithms thresholds are proposed, which are strived to be as independent of the system and environment as possible. Finally, the NLOS detection algorithms are tested and compared with both an UWB simulation environment and an UWB localization test bed.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115518509","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: 128
Omnidirectional Pedestrian Navigation for First Responders 第一响应者的全方位行人导航
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353609
S. Beauregard
{"title":"Omnidirectional Pedestrian Navigation for First Responders","authors":"S. Beauregard","doi":"10.1109/WPNC.2007.353609","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353609","url":null,"abstract":"It might be assumed that dead reckoning approaches to pedestrian navigation could address the needs of first responders, including fire fighters. However, conventional PDR approaches with body-mounted motion sensors can fail when used with the irregular walking patterns typical of urban search and rescue missions. In this paper, a technique using shoe-mounted sensors and inertial mechanization equations to directly calculate the displacement of the feet between footfalls is described. Zero-velocity updates (ZUPTs) at foot standstills limit the drift that would otherwise occur with inexpensive IMUs. We show that the technique is fairly accurate in terms of distance travelled and can handle many arbitrary manoevers, such as tight turns, side/back stepping and stair climbing.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125418545","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: 139
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