Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058874
K. Maichalernnukul, T. Kaiser, Feng Zheng
In this paper, the performance of ultrawideband (UWB) cooperative relay systems in the presence of narrowband (NB) interference is evaluated for the first time. Specifically, we consider UWB cooperative amplify-and-forward and UWB cooperative detect-and-forward systems where a single-tone NB interferer exists, and present their bit-error-rate analysis. Simulation results based on such analysis demonstrate how the NB interference impacts on the system performance.
{"title":"Performance of ultrawideband cooperative relay systems in the presence of narrowband interference","authors":"K. Maichalernnukul, T. Kaiser, Feng Zheng","doi":"10.1109/ICUWB.2011.6058874","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058874","url":null,"abstract":"In this paper, the performance of ultrawideband (UWB) cooperative relay systems in the presence of narrowband (NB) interference is evaluated for the first time. Specifically, we consider UWB cooperative amplify-and-forward and UWB cooperative detect-and-forward systems where a single-tone NB interferer exists, and present their bit-error-rate analysis. Simulation results based on such analysis demonstrate how the NB interference impacts on the system performance.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"264 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121816538","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058855
Jin Wang, Ruiqing Ye, Huaping Liu, Ru Zhang
Pulsed ultrawideband (UWB) signaling is widely used in indoor localization networks, in which data communications often occur concurrently. The receivers in such a network often have different complexity, performance, and energy consumption requirements. The goal of this paper is to design a coded-reference (CR) UWB scheme that enables simultaneous data transmission and high-precision localization while receivers with different performance and complexity requirements can flexibly choose their own operation modes. We start with the Barker codes and construct a set of orthogonal codes for CR signaling; compared with existing schemes, these codes have the desired autocorrelation properties required for high-precision timing extraction when the received signal is weak (transmission over a long distance). We also modify an existing hybrid coherent-transmitted-reference modulation format and apply the orthogonal codes designed so that both coherent and CR receivers can demodulate the same transmitted data while the fine-timing information required for high-precision localization is carried inherently in the transmitted signal. Timing synchronization and error performances of the proposed system are analyzed and simulated.
{"title":"UWB signaling for CR and coherent receivers and localization with weak received signals","authors":"Jin Wang, Ruiqing Ye, Huaping Liu, Ru Zhang","doi":"10.1109/ICUWB.2011.6058855","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058855","url":null,"abstract":"Pulsed ultrawideband (UWB) signaling is widely used in indoor localization networks, in which data communications often occur concurrently. The receivers in such a network often have different complexity, performance, and energy consumption requirements. The goal of this paper is to design a coded-reference (CR) UWB scheme that enables simultaneous data transmission and high-precision localization while receivers with different performance and complexity requirements can flexibly choose their own operation modes. We start with the Barker codes and construct a set of orthogonal codes for CR signaling; compared with existing schemes, these codes have the desired autocorrelation properties required for high-precision timing extraction when the received signal is weak (transmission over a long distance). We also modify an existing hybrid coherent-transmitted-reference modulation format and apply the orthogonal codes designed so that both coherent and CR receivers can demodulate the same transmitted data while the fine-timing information required for high-precision localization is carried inherently in the transmitted signal. Timing synchronization and error performances of the proposed system are analyzed and simulated.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117129346","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058845
Z. Ahmadian, L. Lampe
In this paper we consider the widely linear (WL) design of single and multiuser pre-equalization filters (PEFs) for pre-rake ultra-wideband communication systems that transmit binary phase-shift keying (BPSK) modulated data over multipath multiple-input single-output communication channels. The transmitter applies PEFs before spreading and pre-rake filtering while the receiver structure is very simple with a slicer for detection that follows directly after despreading. for this setting, we propose a modified mean square error criterion for PEF design that takes the real-valued signal constellation into account, i.e., aWL design, derive the closed-form optimum solutions for single and multiuser PEFs, and demonstrate the performance gains that are obtained as a result of this WL design approach.
{"title":"Widely linear design of pre-equalization filters for multiuser pre-rake UWB systems","authors":"Z. Ahmadian, L. Lampe","doi":"10.1109/ICUWB.2011.6058845","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058845","url":null,"abstract":"In this paper we consider the widely linear (WL) design of single and multiuser pre-equalization filters (PEFs) for pre-rake ultra-wideband communication systems that transmit binary phase-shift keying (BPSK) modulated data over multipath multiple-input single-output communication channels. The transmitter applies PEFs before spreading and pre-rake filtering while the receiver structure is very simple with a slicer for detection that follows directly after despreading. for this setting, we propose a modified mean square error criterion for PEF design that takes the real-valued signal constellation into account, i.e., aWL design, derive the closed-form optimum solutions for single and multiuser PEFs, and demonstrate the performance gains that are obtained as a result of this WL design approach.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127487899","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058814
D. Macagnano, G. Destino, G. D. de Abreu
Solving the distance-based network localization problem typically entails the formulation of an equivalent optimization problem which is either convex but sub-optimal, or optimal (i.e., maximum-likelihood) but non-convex. We show that the non-convexity implied by the choice of an optimal formulation need not be translated onto high computational complexity nor to performance degradation. To this end, we focus on an approach whereby low-complexity optimization algorithms are coupled with an efficient initialization which in turn, is formulated in terms of an Euclidean Distance Matrix (EDM) completion problem under the condition that the network is percolated (as required by Graph-based Completion). The resulting Hybrid Initialization scheme is shown to be sufficient to bring the performance of low-complexity algorithms such as the SMACOF and the NLS close to that of far more sophisticated alternatives such as the SDP.
{"title":"Hybrid initialization for non-convex network localization problems","authors":"D. Macagnano, G. Destino, G. D. de Abreu","doi":"10.1109/ICUWB.2011.6058814","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058814","url":null,"abstract":"Solving the distance-based network localization problem typically entails the formulation of an equivalent optimization problem which is either convex but sub-optimal, or optimal (i.e., maximum-likelihood) but non-convex. We show that the non-convexity implied by the choice of an optimal formulation need not be translated onto high computational complexity nor to performance degradation. To this end, we focus on an approach whereby low-complexity optimization algorithms are coupled with an efficient initialization which in turn, is formulated in terms of an Euclidean Distance Matrix (EDM) completion problem under the condition that the network is percolated (as required by Graph-based Completion). The resulting Hybrid Initialization scheme is shown to be sufficient to bring the performance of low-complexity algorithms such as the SMACOF and the NLS close to that of far more sophisticated alternatives such as the SDP.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127798347","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058822
M. Petracca, F. Mazzenga, Remo Pomposini, F. Vatalaro, R. Giuliano
Opportunistic Spectrum Access (OSA) is a promising solution to increase spectral efficiency in the Cognitive Radio (CR) framework. In OSA networks, unlicensed Secondary Users (SUs) need a Common Control Channel (CCC) to identify the spectrum opportunities, i.e., common spectrum holes unused by licensed Primary Users (PUs). To fulfill this requirement, the sharing of the spectrum sensing data via Ultra-wideband (UWB) has been proposed in the literature. In this paper we evaluate the design of a highly available underlay UWB signalling network for the exchange of sensing information among SUs avoiding harmful interference to PUs. We analyse the trade-off between the connectivity degree of a multi-hop underlay signalling network, related to the CCC parameters, and its coexistence with PUs. Moreover, we assess the performance of cooperative sensing in terms of detection probability accounting for the availability and the characteristics of the CCC. Results show that a correct dimensioning of the UWB signalling network allows to achieve high accuracy of PU detection avoiding harmful interference.
机会频谱接入(OSA)是认知无线电(CR)框架下提高频谱效率的一种很有前途的解决方案。在OSA网络中，未授权的Secondary user (SUs)需要一个Common Control Channel (CCC)来识别频谱机会，即未授权的Primary user (pu)未使用的公共频谱漏洞。为了满足这一需求，文献中提出了通过超宽带(UWB)共享频谱感知数据。在本文中，我们评估了一个高可用的底层UWB信令网络的设计，用于在单个单元之间交换传感信息，避免对单个单元的有害干扰。我们分析了与CCC参数相关的多跳底层信令网络的连通性及其与pu共存之间的权衡。此外，我们还根据可用性和CCC的特性，从检测概率的角度评估了协同感知的性能。结果表明，正确的超宽带信号网络尺寸可以实现高精度的PU检测，避免有害干扰。
{"title":"Opportunistic Spectrum Access based on underlay UWB signalling","authors":"M. Petracca, F. Mazzenga, Remo Pomposini, F. Vatalaro, R. Giuliano","doi":"10.1109/ICUWB.2011.6058822","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058822","url":null,"abstract":"Opportunistic Spectrum Access (OSA) is a promising solution to increase spectral efficiency in the Cognitive Radio (CR) framework. In OSA networks, unlicensed Secondary Users (SUs) need a Common Control Channel (CCC) to identify the spectrum opportunities, i.e., common spectrum holes unused by licensed Primary Users (PUs). To fulfill this requirement, the sharing of the spectrum sensing data via Ultra-wideband (UWB) has been proposed in the literature. In this paper we evaluate the design of a highly available underlay UWB signalling network for the exchange of sensing information among SUs avoiding harmful interference to PUs. We analyse the trade-off between the connectivity degree of a multi-hop underlay signalling network, related to the CCC parameters, and its coexistence with PUs. Moreover, we assess the performance of cooperative sensing in terms of detection probability accounting for the availability and the characteristics of the CCC. Results show that a correct dimensioning of the UWB signalling network allows to achieve high accuracy of PU detection avoiding harmful interference.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124551423","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058881
Xiaoyang Wang, A. Young, K. Philips, H. de Groot
The performance of a duty-cycled coherent impulse radio UWB system is typically dominated by the accuracy of its timing references. In this paper, a timing analysis is presented for an IR-UWB system to specify the accuracy requirements for the internal clocks of the transceiver. A possible clock generation unit is proposed to realize the coherent reception and improve sensitivity and SNR performance. The analysis is performed for an IEEE802.15.4a compliant data packet, however, can be extended to other IR-UWB standards easily.
{"title":"Clock accuracy analysis for a coherent IR-UWB system","authors":"Xiaoyang Wang, A. Young, K. Philips, H. de Groot","doi":"10.1109/ICUWB.2011.6058881","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058881","url":null,"abstract":"The performance of a duty-cycled coherent impulse radio UWB system is typically dominated by the accuracy of its timing references. In this paper, a timing analysis is presented for an IR-UWB system to specify the accuracy requirements for the internal clocks of the transceiver. A possible clock generation unit is proposed to realize the coherent reception and improve sensitivity and SNR performance. The analysis is performed for an IEEE802.15.4a compliant data packet, however, can be extended to other IR-UWB standards easily.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125225446","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058849
T. Hynek, J. Sýkora
This paper addresses a cooperative communication scheme in a simple multi-node network of two mutually independent sources communicating over a common shared relay. We assume an Impulse Radio Ultra-Wideband (UWB) communication technique employed by all network nodes which influences used model of a channel impulse response. The signal received at the relay is processed by a Hierarchical Decode & Forward (HDF) strategy. Due to properties of a Hierarchical eXclusive Code (HXC) it is sufficient for the relay to fully decode only hierarchical symbols. The capacity region of the HDF strategy has a rectangular shape and exceeds the capacity region of a Joint Decode & Forward (JDF) concept. We assume a projection to given subspace at the input of the relay receiver to reduce the dimensionality of the signal. Impact of the choice of the subspace is analyzed in this paper. Various subspaces with different level of the knowledge of a Channel State Estimation (CSE) are considered. For different particular channel realizations, according to the chosen channel model, we numerically evaluate the MAC channel capacity. For comparison we also evaluate the classical MAC region as well as the true information theoretic channel capacity.
{"title":"Capacity regions of Wireless Network Coding with Hierarchical Decode & forward strategy applied on Impulse Radio UWB technology","authors":"T. Hynek, J. Sýkora","doi":"10.1109/ICUWB.2011.6058849","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058849","url":null,"abstract":"This paper addresses a cooperative communication scheme in a simple multi-node network of two mutually independent sources communicating over a common shared relay. We assume an Impulse Radio Ultra-Wideband (UWB) communication technique employed by all network nodes which influences used model of a channel impulse response. The signal received at the relay is processed by a Hierarchical Decode & Forward (HDF) strategy. Due to properties of a Hierarchical eXclusive Code (HXC) it is sufficient for the relay to fully decode only hierarchical symbols. The capacity region of the HDF strategy has a rectangular shape and exceeds the capacity region of a Joint Decode & Forward (JDF) concept. We assume a projection to given subspace at the input of the relay receiver to reduce the dimensionality of the signal. Impact of the choice of the subspace is analyzed in this paper. Various subspaces with different level of the knowledge of a Channel State Estimation (CSE) are considered. For different particular channel realizations, according to the chosen channel model, we numerically evaluate the MAC channel capacity. For comparison we also evaluate the classical MAC region as well as the true information theoretic channel capacity.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132691056","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058806
M. E. Tutay, S. Gezici, H. Poor
In code-multiplexed transmitted-reference (CM-TR) ultra-wideband (UWB) systems, data signals and reference signals are transmitted using two distinct orthogonal codes. In this way, performance improvements and/or implementation advantages are obtained compared to transmitted-reference (TR) and frequency-shifted reference (FSR) ultra-wideband (UWB) systems. In this study, performance of CM-TR systems is investigated, and probability of error expressions are obtained. For the single user case, a closed-form expression for the exact probability of error is derived, whereas a Gaussian approximation, the accuracy of which depends on the number of frames per symbol, is considered for the multiuser case. Also, the maximum likelihood detector is derived, and numerical examples are presented.
{"title":"Performance analysis of code-multiplexed transmitted-reference ultra-wideband systems","authors":"M. E. Tutay, S. Gezici, H. Poor","doi":"10.1109/ICUWB.2011.6058806","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058806","url":null,"abstract":"In code-multiplexed transmitted-reference (CM-TR) ultra-wideband (UWB) systems, data signals and reference signals are transmitted using two distinct orthogonal codes. In this way, performance improvements and/or implementation advantages are obtained compared to transmitted-reference (TR) and frequency-shifted reference (FSR) ultra-wideband (UWB) systems. In this study, performance of CM-TR systems is investigated, and probability of error expressions are obtained. For the single user case, a closed-form expression for the exact probability of error is derived, whereas a Gaussian approximation, the accuracy of which depends on the number of frames per symbol, is considered for the multiuser case. Also, the maximum likelihood detector is derived, and numerical examples are presented.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"58 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133384895","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058890
P. Gentner, Martin Wiessflecker, H. Arthaber, A. Scholtz, C. Mecklenbrauker
The combination of UWB Impulse Radio with RFID technology is proposed, implemented and analysed in this paper. For future RFID technologies, inexpensive and power efficient transceivers on the tag side are necessary for the application of Smart Dust and the Internet of Things. Therefore, we have designed and manufactured two silicon prototypes of a reconfigurable frontend of an UWB impulse radio transmitter with a total size of 1×1.3mm2. This includes an On-Chip Antenna which is manufactured in a standard CMOS. The centre frequency and the bandwidth of the radiated pulse are controllable as well as the data rate of the modulated signal. The embedded voltage controlled oscillator allows the characterisation of the On-Chip Antennas without the need of any external RF feeding structure. We emphasize this issue because RF feeding structures are inadequate for On-Chip Antenna measurements; they interfere heavily with the device under test. With this prototype we are able to perform antenna and communication characterisation measurements towards passive ultra wideband RFID tags.
{"title":"Measured wideband near-field characteristics of an UWB RFID tag with On-Chip Antenna","authors":"P. Gentner, Martin Wiessflecker, H. Arthaber, A. Scholtz, C. Mecklenbrauker","doi":"10.1109/ICUWB.2011.6058890","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058890","url":null,"abstract":"The combination of UWB Impulse Radio with RFID technology is proposed, implemented and analysed in this paper. For future RFID technologies, inexpensive and power efficient transceivers on the tag side are necessary for the application of Smart Dust and the Internet of Things. Therefore, we have designed and manufactured two silicon prototypes of a reconfigurable frontend of an UWB impulse radio transmitter with a total size of 1×1.3mm2. This includes an On-Chip Antenna which is manufactured in a standard CMOS. The centre frequency and the bandwidth of the radiated pulse are controllable as well as the data rate of the modulated signal. The embedded voltage controlled oscillator allows the characterisation of the On-Chip Antennas without the need of any external RF feeding structure. We emphasize this issue because RF feeding structures are inadequate for On-Chip Antenna measurements; they interfere heavily with the device under test. With this prototype we are able to perform antenna and communication characterisation measurements towards passive ultra wideband RFID tags.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133774298","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 : 2011-10-24DOI: 10.1109/ICUWB.2011.6058843
R. Zetik, Snezhana Jovanoska, R. Thoma
In this article we propose a low complexity algorithm for detection and localization of multiple targets using UWB sensor networks. We assume that the targets being tracked do not have any devices or tags attached. They are localized using scattered electromagnetic waves. Our envisaged sensor network consists of sensor nodes that can autonomously detect and localize the closest target. Those partial location estimates are mapped into images of an inspected area that are smoothed in time. This data fusion method does not require any data association or multi-hypothesis tests that are usually prerequisite in localization of multiple targets. This yields a significantly lower computational complexity compared to other algorithms. We demonstrate the performance of our algorithm by an experimental measurement using 6 sensor nodes.
{"title":"Simple method for localisation of multiple tag-free targets using UWB sensor network","authors":"R. Zetik, Snezhana Jovanoska, R. Thoma","doi":"10.1109/ICUWB.2011.6058843","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058843","url":null,"abstract":"In this article we propose a low complexity algorithm for detection and localization of multiple targets using UWB sensor networks. We assume that the targets being tracked do not have any devices or tags attached. They are localized using scattered electromagnetic waves. Our envisaged sensor network consists of sensor nodes that can autonomously detect and localize the closest target. Those partial location estimates are mapped into images of an inspected area that are smoothed in time. This data fusion method does not require any data association or multi-hypothesis tests that are usually prerequisite in localization of multiple targets. This yields a significantly lower computational complexity compared to other algorithms. We demonstrate the performance of our algorithm by an experimental measurement using 6 sensor nodes.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130205501","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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