Pub Date : 2017-10-01DOI: 10.1109/PIMRC.2017.8292667
M. Jasim, A. Aldalbahi, Abdallah Khreishah, N. Ghani
Millimeter wave channels suffer from large path losses, penetration losses and atmospheric attenuation. Although beamforming techniques can significantly enhance link margins here, they also introduce initial beam access problems at the base and mobile stations prior to data transmission. Hence this paper presents an effective access scheme inspired by the Hooke Jeeves direct pattern search for analog beamforming cascaded codebooks. Simulation results show that the proposed algorithm delivers substantial performance improvements versus existing solutions in terms of computational complexity, access times and power and energy consumption.
{"title":"Hooke Jeeves search method for initial beam access in 5G mmWave cellular networks","authors":"M. Jasim, A. Aldalbahi, Abdallah Khreishah, N. Ghani","doi":"10.1109/PIMRC.2017.8292667","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292667","url":null,"abstract":"Millimeter wave channels suffer from large path losses, penetration losses and atmospheric attenuation. Although beamforming techniques can significantly enhance link margins here, they also introduce initial beam access problems at the base and mobile stations prior to data transmission. Hence this paper presents an effective access scheme inspired by the Hooke Jeeves direct pattern search for analog beamforming cascaded codebooks. Simulation results show that the proposed algorithm delivers substantial performance improvements versus existing solutions in terms of computational complexity, access times and power and energy consumption.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"481 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133643851","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292608
F. Bellili, Souheib Ben Amor, Achref Methenni, S. Affes
In this paper, we propose a new code-aided (CA) maximum likelihood (ML) approach for time synchronization in turbo-coded systems. The time delay estimate is refined at each turbo iteration owing to the increasingly accurate estimates for the log-likelihood ratios (LLRs) of the coded bits. The refined time delay estimate is then used by the matched filter (MF) in order to provide the soft-input soft-output (SISO) decoders with more reliable symbol-rate samples for the next turbo iteration. Simulation results show the remarkable performance improvements of CA estimation against the traditional non-data-aided (NDA) estimation scheme. Moreover, the new CA ML estimator (MLE) enjoys significant advantage in computational complexity over existing ML CA solutions.
{"title":"Low-cost code-aided ML timing recovery from turbo-coded QAM transmissions","authors":"F. Bellili, Souheib Ben Amor, Achref Methenni, S. Affes","doi":"10.1109/PIMRC.2017.8292608","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292608","url":null,"abstract":"In this paper, we propose a new code-aided (CA) maximum likelihood (ML) approach for time synchronization in turbo-coded systems. The time delay estimate is refined at each turbo iteration owing to the increasingly accurate estimates for the log-likelihood ratios (LLRs) of the coded bits. The refined time delay estimate is then used by the matched filter (MF) in order to provide the soft-input soft-output (SISO) decoders with more reliable symbol-rate samples for the next turbo iteration. Simulation results show the remarkable performance improvements of CA estimation against the traditional non-data-aided (NDA) estimation scheme. Moreover, the new CA ML estimator (MLE) enjoys significant advantage in computational complexity over existing ML CA solutions.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133111072","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292289
Wanxin Gao, J. Harms
Recently remarkable progress has been made on the development of wireless charging technologies. Their augmentation to Intermittently Connected Mobile ad hoc Networks (ICMNs) can boost the network performance with the benefit of elongated nodal lifespans. This benefit, however, is also accompanied by new potential challenges for protocol designers, as the mobile nodes can assume unconventionally dynamic, heterogeneous, and interdependent movement patterns due to dis/charging processes. The interplay between mobility, energy, and communication can skew the efficacy of existing routing protocols. In this paper, we devise a series of grid-based mobility models to mimic the possible charging-aware moving behaviors of wirelessly chargeable ICMNs that are assisted by renewable charging resources. Properties of the mobility models are investigated through simulation with classic routing protocols for ICMNs (i.e. epidemic routing and randomized flooding). Results show that the charging-aware mobility can enable the nodes to maintain high energy and good packet delivery ratios, depending on the aggressiveness of transmission and distribution of chargers.
{"title":"Charging-aware mobility modeling for wirelessly chargeable intermittently connected MANETs","authors":"Wanxin Gao, J. Harms","doi":"10.1109/PIMRC.2017.8292289","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292289","url":null,"abstract":"Recently remarkable progress has been made on the development of wireless charging technologies. Their augmentation to Intermittently Connected Mobile ad hoc Networks (ICMNs) can boost the network performance with the benefit of elongated nodal lifespans. This benefit, however, is also accompanied by new potential challenges for protocol designers, as the mobile nodes can assume unconventionally dynamic, heterogeneous, and interdependent movement patterns due to dis/charging processes. The interplay between mobility, energy, and communication can skew the efficacy of existing routing protocols. In this paper, we devise a series of grid-based mobility models to mimic the possible charging-aware moving behaviors of wirelessly chargeable ICMNs that are assisted by renewable charging resources. Properties of the mobility models are investigated through simulation with classic routing protocols for ICMNs (i.e. epidemic routing and randomized flooding). Results show that the charging-aware mobility can enable the nodes to maintain high energy and good packet delivery ratios, depending on the aggressiveness of transmission and distribution of chargers.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"412 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127829552","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292681
I. A. Ridhawi, Nour Mostafa, Y. Kotb, M. Aloqaily, I. Abualhaol
As an emergent technology the IoT promises to harness the computational and data resources distributed across different remote clouds. Fog computing extends cloud computing by bringing the network and cloud resources closer to the network edge. As the number of resources contributing to the cloud/fog system grows, so the problems associated with efficient and effective resource selection and allocation. In this paper, we introduce a fog-to-fog (F2F) data caching and selection method, which allows IoT devices to retrieve data in a faster and more efficient way. The proposed solution is based on a data caching and selection strategy using a multi-agent cooperation framework. Caching is achieved by decomposing cloud data into a set of files and then placed into fog storage sites. The selection process is based on a run-time file location prediction technique, which collects and maintains a repository of fog data in the form of log files. When data needs to be retrieved, prediction is made with the aid of these logs and previous successful search queries resulting in realistic run-time location estimates as well as best fog selection. Simulation results showcase the reduced data retrieval latency that enable tactile Internet in 5G. Additionally, results show increased successful file hit ratio leading to a reduced number of repeated downloads.
{"title":"Data caching and selection in 5G networks using F2F communication","authors":"I. A. Ridhawi, Nour Mostafa, Y. Kotb, M. Aloqaily, I. Abualhaol","doi":"10.1109/PIMRC.2017.8292681","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292681","url":null,"abstract":"As an emergent technology the IoT promises to harness the computational and data resources distributed across different remote clouds. Fog computing extends cloud computing by bringing the network and cloud resources closer to the network edge. As the number of resources contributing to the cloud/fog system grows, so the problems associated with efficient and effective resource selection and allocation. In this paper, we introduce a fog-to-fog (F2F) data caching and selection method, which allows IoT devices to retrieve data in a faster and more efficient way. The proposed solution is based on a data caching and selection strategy using a multi-agent cooperation framework. Caching is achieved by decomposing cloud data into a set of files and then placed into fog storage sites. The selection process is based on a run-time file location prediction technique, which collects and maintains a repository of fog data in the form of log files. When data needs to be retrieved, prediction is made with the aid of these logs and previous successful search queries resulting in realistic run-time location estimates as well as best fog selection. Simulation results showcase the reduced data retrieval latency that enable tactile Internet in 5G. Additionally, results show increased successful file hit ratio leading to a reduced number of repeated downloads.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115237159","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292467
Faezeh Alavi, K. Cumanan, Z. Ding, A. Burr
Recently, non-orthogonal multiple access (NOMA) has received considerable attention as a promising candidate for 5G systems. In this paper, a robust beamforming approach is investigated for NOMA based multiple-input single-output (MISO) downlink transmission. We consider an outage probability based robust scheme by incorporating channel uncertainties, where the total transmit power is minimized while satisfying these outage constraints at each user. Although the original problem is non-convex in terms of beamforming vectors, an intractable optimization problem is reformulated with a linear matrix inequality (LMI) form by exploiting semidefinite relaxation (SDR) technique. Finally, simulation results have been provided to validate the performance of the proposed robust design, where these results confirm that the robust scheme outperforms the non-robust scheme in terms of the rate satisfaction ratio at each user.
{"title":"Outage constraint based robust beamforming design for non-orthogonal multiple access in 5G cellular networks","authors":"Faezeh Alavi, K. Cumanan, Z. Ding, A. Burr","doi":"10.1109/PIMRC.2017.8292467","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292467","url":null,"abstract":"Recently, non-orthogonal multiple access (NOMA) has received considerable attention as a promising candidate for 5G systems. In this paper, a robust beamforming approach is investigated for NOMA based multiple-input single-output (MISO) downlink transmission. We consider an outage probability based robust scheme by incorporating channel uncertainties, where the total transmit power is minimized while satisfying these outage constraints at each user. Although the original problem is non-convex in terms of beamforming vectors, an intractable optimization problem is reformulated with a linear matrix inequality (LMI) form by exploiting semidefinite relaxation (SDR) technique. Finally, simulation results have been provided to validate the performance of the proposed robust design, where these results confirm that the robust scheme outperforms the non-robust scheme in terms of the rate satisfaction ratio at each user.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"177 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115646505","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292290
Amnart Boonkajay, F. Adachi
Blind selected mapping (blind SLM) can effectively reduce the peak-to-average power ratio (PAPR) of both orthogonal frequency division multiplexing (OFDM) and single-carrier (SC) signals without side-information transmission. In typical blind SLM, maximum likelihood (ML) estimation is applied to find the de-mapping phase rotation sequence which gives the lowest Euclidean distance among all possible sequences, resulting in very high computational complexity. In this paper, we introduce a novel low-complexity 2-step estimation suitable for blind SLM. In the first step, the phase rotation sequence achieving the lowest Euclidean distance is searched by using the Viterbi algorithm. In the second step, verification and correction are carried out to choose a phase rotation sequence stored in the codebook, which has the lowest Hamming distance from the estimated sequence in the first step. It is confirmed by computer simulation that our proposed 2-step estimation achieves similar BER performance to the transmission without SLM and the transmission with blind SLM with the conventional ML estimation, but the proposed estimation technique requires much less complexity.
{"title":"2-Step phase rotation estimation for Low-PAPR signal transmission using blind selected mapping","authors":"Amnart Boonkajay, F. Adachi","doi":"10.1109/PIMRC.2017.8292290","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292290","url":null,"abstract":"Blind selected mapping (blind SLM) can effectively reduce the peak-to-average power ratio (PAPR) of both orthogonal frequency division multiplexing (OFDM) and single-carrier (SC) signals without side-information transmission. In typical blind SLM, maximum likelihood (ML) estimation is applied to find the de-mapping phase rotation sequence which gives the lowest Euclidean distance among all possible sequences, resulting in very high computational complexity. In this paper, we introduce a novel low-complexity 2-step estimation suitable for blind SLM. In the first step, the phase rotation sequence achieving the lowest Euclidean distance is searched by using the Viterbi algorithm. In the second step, verification and correction are carried out to choose a phase rotation sequence stored in the codebook, which has the lowest Hamming distance from the estimated sequence in the first step. It is confirmed by computer simulation that our proposed 2-step estimation achieves similar BER performance to the transmission without SLM and the transmission with blind SLM with the conventional ML estimation, but the proposed estimation technique requires much less complexity.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124145467","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292356
A. Dowhuszko, A. Pérez-Neira
This paper studies the sum data rate that a Visible Light Communication (VLC) system with multiple users can achieve when phosphor-converted white LED panels are used to provide illumination and communication simultaneously. Three different transmission schemes based on Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (ACO-OFDM) are considered to allocate the communication resources in each transmission point: Frequency Reuse (FR), Joint Transmission Coordinated Multi-Point (JT-CoMP), and a Hybrid combination of them. Since phosphor-converted white LEDs have a larger modulation bandwidth for blue optical wavelengths rather than green-yellow-red ones, the performance of each transmission method is also evaluated using a visible and/or blue light optical filter in front of the Photodetector (PD). When the transmission points apply FR, strong inter-cell interference results in high variability of the achievable data rate at different locations. On the other hand, when JT-CoMP is applied, a more homogeneous data rate coverage is achieved, reducing the peak data rate in the inner parts of the cells but improving notably the data rate in cell-edge areas.
{"title":"Achievable data rate of coordinated multi-point transmission for visible light communications","authors":"A. Dowhuszko, A. Pérez-Neira","doi":"10.1109/PIMRC.2017.8292356","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292356","url":null,"abstract":"This paper studies the sum data rate that a Visible Light Communication (VLC) system with multiple users can achieve when phosphor-converted white LED panels are used to provide illumination and communication simultaneously. Three different transmission schemes based on Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (ACO-OFDM) are considered to allocate the communication resources in each transmission point: Frequency Reuse (FR), Joint Transmission Coordinated Multi-Point (JT-CoMP), and a Hybrid combination of them. Since phosphor-converted white LEDs have a larger modulation bandwidth for blue optical wavelengths rather than green-yellow-red ones, the performance of each transmission method is also evaluated using a visible and/or blue light optical filter in front of the Photodetector (PD). When the transmission points apply FR, strong inter-cell interference results in high variability of the achievable data rate at different locations. On the other hand, when JT-CoMP is applied, a more homogeneous data rate coverage is achieved, reducing the peak data rate in the inner parts of the cells but improving notably the data rate in cell-edge areas.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124279305","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292251
P. Puri, P. Garg
This paper describes a coherent tree-space optical (FSO) communication system consisting of multiple parallel relays and two terminal nodes. When direct communication between the two terminal nodes of the network is not possible, one relay is selected to establish a dual-hop communication link between them. In order to best utilize the channel resources, the relay that has the best channel characteristics is selected by the terminal nodes. An atmospheric turbulent optical channel that is modeled by the Gamma-Gamma distribution and affected by misalignment errors and path loss is considered for the analysis. The closed-form expressions for the system outage probability and average bit error probability are derived. Furthermore, to provide a physical interpretation of the closed form expressions, we derive the asymptotic expressions and the diversity order of the system. It is observed, by employing relay selection a significant increase in diversity gain is achieved.
{"title":"Relay selection strategy for parallel relayed FSO systems","authors":"P. Puri, P. Garg","doi":"10.1109/PIMRC.2017.8292251","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292251","url":null,"abstract":"This paper describes a coherent tree-space optical (FSO) communication system consisting of multiple parallel relays and two terminal nodes. When direct communication between the two terminal nodes of the network is not possible, one relay is selected to establish a dual-hop communication link between them. In order to best utilize the channel resources, the relay that has the best channel characteristics is selected by the terminal nodes. An atmospheric turbulent optical channel that is modeled by the Gamma-Gamma distribution and affected by misalignment errors and path loss is considered for the analysis. The closed-form expressions for the system outage probability and average bit error probability are derived. Furthermore, to provide a physical interpretation of the closed form expressions, we derive the asymptotic expressions and the diversity order of the system. It is observed, by employing relay selection a significant increase in diversity gain is achieved.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124290294","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292438
Kezhong Zhang, Easton Li Xu, Z. Feng
In practice, signals may be interfered by hostile jamming or illegal transmission and it is a very challenging task to determine the modulation formats of mixed signals. To tackle this problem, we propose a three-step algorithm called PFS algorithm. In the first step, principal component analysis (PCA) is conducted to suppress the noise. In the second step, the mixed signals are separated via fast independent component analysis (FICA), which transforms the received signals into the components that are maximally independent of each other. In the third step, high-order cumulants (HOCs) and support vector machines (SVMs) are adopted to determine the modulation format of the signal. The numerical experiments show that the PFS algorithm has a superior performance compared to other existing methods.
{"title":"PFS: A novel modulation classification scheme for mixed signals","authors":"Kezhong Zhang, Easton Li Xu, Z. Feng","doi":"10.1109/PIMRC.2017.8292438","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292438","url":null,"abstract":"In practice, signals may be interfered by hostile jamming or illegal transmission and it is a very challenging task to determine the modulation formats of mixed signals. To tackle this problem, we propose a three-step algorithm called PFS algorithm. In the first step, principal component analysis (PCA) is conducted to suppress the noise. In the second step, the mixed signals are separated via fast independent component analysis (FICA), which transforms the received signals into the components that are maximally independent of each other. In the third step, high-order cumulants (HOCs) and support vector machines (SVMs) are adopted to determine the modulation format of the signal. The numerical experiments show that the PFS algorithm has a superior performance compared to other existing methods.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115124596","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 : 2017-10-01DOI: 10.1109/PIMRC.2017.8292225
Saeed Shojaee, Johannes Schmitz, R. Mathar, Sivan Toledo
We discuss receiver clock correction and associated performance bounds for passive emitter localization using TDOA measurements from asynchronous sensor networks. In the considered system, passive receiving sensors are augmented with beacons at known locations that perform approximately periodical transmissions, used for calibration of the system synchronization. The precise transmission times as well as the transmission interval of the beacon messages are unknown. Similarly the transmissions of the target are irregular and do not, in general, occur simultaneous with the beacon transmissions. The clocks of each sensor are described by a linear error model. Based on that, we compare different snapshot based approaches for clock correction and derive theoretical limits for the localization of the target based on the modified Cramer-Rao lower bound (MCRLB). Simulation results are presented to illustrate the theoretical findings and show that our proposed estimators perform close to the MCRLB. Additional experimental results verify the analysis and the approach in a realistic large scale scenario.
{"title":"On the accuracy of passive hyperbolic localization in the presence of clock drift","authors":"Saeed Shojaee, Johannes Schmitz, R. Mathar, Sivan Toledo","doi":"10.1109/PIMRC.2017.8292225","DOIUrl":"https://doi.org/10.1109/PIMRC.2017.8292225","url":null,"abstract":"We discuss receiver clock correction and associated performance bounds for passive emitter localization using TDOA measurements from asynchronous sensor networks. In the considered system, passive receiving sensors are augmented with beacons at known locations that perform approximately periodical transmissions, used for calibration of the system synchronization. The precise transmission times as well as the transmission interval of the beacon messages are unknown. Similarly the transmissions of the target are irregular and do not, in general, occur simultaneous with the beacon transmissions. The clocks of each sensor are described by a linear error model. Based on that, we compare different snapshot based approaches for clock correction and derive theoretical limits for the localization of the target based on the modified Cramer-Rao lower bound (MCRLB). Simulation results are presented to illustrate the theoretical findings and show that our proposed estimators perform close to the MCRLB. Additional experimental results verify the analysis and the approach in a realistic large scale scenario.","PeriodicalId":397107,"journal":{"name":"2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117058056","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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