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Multi-Dimensional Detector for UWB Ranging Systems in Dense Multipath Environments
2008
IEEE Transactions on Wireless Communications
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In coping with this situation, we show in this paper how to use multi-dimensional detectors for enhancing the ranging performance. ...
However, dense multi-path propagation and frequency selective fading, as encountered in a typical UWB environment, force the received UWB signal to behave like a random waveform. ...
CONCLUSION In this paper, multi-dimensional detectors are proposed for UWB ranging systems to operate in a dense multi-path environment. ...
doi:10.1109/twc.2008.060275
fatcat:fl76re6s3rh35p3vdcdlqcags4
Performance of Signal Detection Scheme Based on Lattice Reduction in Spatial Multiplexing UWB Systems
2019
International Journal of Electrical and Electronic Engineering & Telecommunications
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This paper proposes a Lattice-Reduction (LR)aided Zero-Forcing (ZF) detection method for spatial multiplexing Ultra-Wideband (UWB) Multiple Input Multiple Output (MIMO) systems on indoor log-normal multipath ...
SYSTEM MODEL Consider a pulsed SM UWB MIMO system composed by N T transmit antennas and N R receive antennas, where ...
Among UWB wireless multipath channel models examined in the literature, a dense multipath channel could be observed in indoor office and industrial environments [17] , [18] . ...
doi:10.18178/ijeetc.8.4.205-212
fatcat:7jpz4wsonvgdjjbn3aktzta27q
Ultra-Wideband Compressed Sensing: Channel Estimation
2007
IEEE Journal on Selected Topics in Signal Processing
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related to the strongest propagation paths that composite the multipath UWB channel. ...
Extensive simulations show that for different propagation scenarios and UWB communication channels, detectors based on CS channel estimation outperform traditional correlator using just 1/3 of the sampling ...
On the other hand, for dense multipath UWB channel, like NLOS propagation where the multipath components arrive closely spaced, more pulse-overlapping is found. ...
doi:10.1109/jstsp.2007.906657
fatcat:626f2ulcyrfwxk642xz3ilokla
Maximum Likelihood Multiple Access Timing Synchronization for UWB Communications
2008
IEEE Transactions on Wireless Communications
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Rapid and reliable timing synchronization is a demanding task in the receiver design for ultra-wideband (UWB) communication systems, especially when concurrent multiple access is called for. ...
Simulation runs testify the effectiveness of the proposed scheme in terms of mean square timing estimation errors and bit-error-rate detection performance when operating in multiple access and dense multipath ...
Simulations confirm the efficacy of the proposed synchronizer in achieving satisfactory timing recovery performance in multiple access and dense multipath environments. ...
doi:10.1109/t-wc.2008.070910
fatcat:cm4n7eu6uvhbtahiwmpiije5ve
Multi-user detection in ultra-wideband multiple-access communications systems using an efficient heuristic algorithm
2012
Scientific Research and Essays
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Multiple access interference (MAI) degrades performance of conventional single user detector in UWB systems. ...
This paper investigates learning and achievable bit error rate (BER) performance of ultra-wideband (UWB) systems that use intelligent multiuser detector (MUD) when communicating over UWB channels that ...
INTRODUCTION It is well known that multi-access interference (MAI) limits direct sequence ultra-wide band (DS-UWB) system capacity. ...
doi:10.5897/sre11.2224
fatcat:ifql2wgmo5g3vatlsenekmrz5m
Simulation and Analysis of UWB Indoor Channel Through S-V Model for User Location Detection
2011
International Journal of Computer and Electrical Engineering
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UWB has advantages of high transmission speed, great system storage, excellent multipath immunity capacity, limited power wastage and low cost, ultra-wideband technology is considered a key technology ...
Moreover, as standard of speed has been given for UWB, the communication is appropriate with high bit rates in LOS channel. ...
For indoor environment, indoor channel modeling usually needs availability of the three dimensional database for channel estimation. ...
doi:10.7763/ijcee.2011.v3.412
fatcat:zz6mhjbwtffgxi3e5ehb5v65fe
Integrated IMU with Faster R-CNN Aided Visual Measurements from IP Cameras for Indoor Positioning
2018
Sensors
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The robust fused IMU/MVRM solution significantly decreases the positioning errors and shows better performance in dense multipath scenarios compared with the pure MVRM solution and ultra-wideband (UWB) ...
We implemented a positioning test for a single user and an external camera in five indoor scenarios to evaluate the performance. ...
For the UWB, in the dense multipath environments, such as corner, the positioning results are not satisfying. ...
doi:10.3390/s18093134
pmid:30227655
pmcid:PMC6164623
fatcat:iazwx2b42rgdzmpn5ebypkyz7u
A Survey of Robot Swarms' Relative Localization Method
2022
Sensors
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However, in some worst cases, the GNSS (Global Navigation Satellite System) signals are weak due to the crowd being in a swarm or blocked by a forest, mountains, and high buildings in the environment. ...
After analyzing typical relative localization systems and algorithms from the perspective of functionality and practicality, this paper concludes that the UWB-based (ultra wideband) system is suitable ...
Acknowledgments: The authors would like to thank Bosen Lin (bosenlin@nudt.edu.cn, College of Intelligence Science and Technology, National University of Defense Technology) for his assistance with the ...
doi:10.3390/s22124424
fatcat:kvh2ppntvfcqte5ujskpvtxasq
A novel approach to UWB data detection with symbol-level synchronization
2009
Physical Communication
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Simulation results corroborate the effectiveness of the proposed system when operating in typical dense multipath propagation scenarios. ...
Differentially modulated ultra-wideband (UWB) systems have recently attracted a lot of attention since they can avoid the costly channel estimation required by coherent schemes. ...
The harsh multipath propagation conditions typically occurring in wireless environments, however, hamper the extensive deployment of UWB systems. ...
doi:10.1016/j.phycom.2009.08.009
fatcat:u2papcekmjdcxebsomhj3nketu
Filter Bank-based Transceiver Design for Ultrawideband
[chapter]
2010
Ultra Wideband
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dense multipath environment. ...
However, current technology can hardly cope with sampling rates at or above the Nyquist rate, and thus the Cramér-Rao Bound is difficult to attain, notably in dense-multipath indoor environments. ...
doi:10.5772/10008
fatcat:tykhwt5sq5g2pfsty25m6ambiq
A ML-Based Framework for Joint TOA/AOA Estimation of UWB Pulses in Dense Multipath Environments
2014
IEEE Transactions on Wireless Communications
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We present a joint estimator of the time of arrival (TOA) and angle of arrival (AOA) for impulse radio ultrawideband (UWB) systems in which an antenna array is employed at the receiver. ...
In simulation experiments based on multipath UWB channel models featuring both diffuse and directional image fields, our approach exhibits superior performance to that of a competing scheme from the recent ...
CONCLUSION In this paper, we proposed a novel joint TOA and AOA estimator for dense multipath UWB environments. ...
doi:10.1109/twc.2014.2343634
fatcat:ncqbab5vzvhibpsvjntmqxfesu
Cooperative Localization and Object Recognition in Autonomous UWB Sensor Networks
[chapter]
2013
Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications
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These hypotheses are depicted as points, or particles, in the multi-dimensional state space. ...
the DOA analysis of dense multipath components. ...
doi:10.5772/55077
fatcat:tcedfd5qlzcrforkpjbdb6cqvm
A synchronization-free approach to data recovery for multiple access UWB communications
2008
2008 IEEE International Conference on Ultra-Wideband
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Simulation results carried out in typical dense multipath propagation scenarios verify that appealing detection performance is achieved at affordable complexity thanks to an efficient implementation based ...
Ultra-wideband (UWB) wireless channels provide very large diversity, but make the receiver design a demanding task as far as channel estimation and timing recovery are concerned. ...
BER in the multi-user scenario for various Nu. ...
doi:10.1109/icuwb.2008.4653374
fatcat:ptmofmxvajgnvha6vvama5c3fq
Time delay estimation for UWB non coherent receiver in indoor environment, from theory to practice
2018
EURASIP Journal on Wireless Communications and Networking
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We investigate lower bounds for the time delay estimation error for ultra-wideband ranging systems operating in realistic multipath environments. ...
Simulations are evaluated using a simulated UWB underground mine channel. This can be considered as the first step for a global positioning system for use mining industry. ...
Simulations results were given using a simulated UWB underground mine channel. This can be considered as the first step for a global positioning system for use mining industry. ...
doi:10.1186/s13638-018-1306-z
fatcat:bq5wmtwr4vgtvdog36nijderee
Ultra-Wideband Radio
[chapter]
2005
Encyclopedia of RF and Microwave Engineering
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Thank you, Jay Bain for all your support regarding standards; Larry Fullerton for your assistance with the history. . .people tend to discuss the brilliance of your mind, but we would like to acknowledge ...
Therefore, we thank many people for their generous contributions and efforts to make this work as up-to-date and accurate as is possible with such a fluid topic. ...
The best applications for UWB are for indoor use in high clutter environments. ...
doi:10.1002/0471654507.eme561
fatcat:u6qcchapnrd23fpdipovspph3y
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