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Statistical Analysis of Radio Propagation Channel in Ruins Environment
2015
International Journal of Antennas and Propagation
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Channel parameters, such as arrival time, delays, and complex amplitudes, are statistically analyzed. Furthermore, a channel simulator is built based on these statistics. ...
The cellphone based localization system for search and rescue in complex high density ruins has attracted a great interest in recent years, where the radio channel characteristics are critical for design ...
based on estimated parameters and ( ) is the measured responses. ...
doi:10.1155/2015/173936
fatcat:x63mjkbg55dvhaw2mjmd23ue7q
Robust adaptive MMSE/DFE multiuser detection in multipath fading channel with impulse noise
2005
IEEE Transactions on Signal Processing
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We propose a linear-trend tracking method for estimating the impulse response of the time-varying channel via a robust Kalman filtering with a scheme that can automatically adjust the variance of the driving ...
Following channel estimation, a robust multiuser detection algorithm is developed via a Kalman-based decision feedback equalization (DFE). ...
A robust Kalman-based DFE detection algorithm based on the estimated channel impulse response is also proposed to prevent severe error propagation due to impulsive noise and channel estimation error under ...
doi:10.1109/tsp.2004.838949
fatcat:ic4d64g2gndwrjxdtgr5dnwvcq
A Novel Channel Estimation Method for Power Line Communications
2017
Communications on Applied Electronics
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As a result, these deficiencies cause more bit errors and influence the quality of channel estimation. In this article, an efficient channel estimation method based on Bayesian learning is presented. ...
A new kernel function as well as proper hyper-parameters in relevance vector machine is used to estimate the impulse response of power line communication channel. ...
At the end of estimation, two parts of estimated channel response are merged to form the total and more actual complex-valued channel impulse response. ...
doi:10.5120/cae2017652722
fatcat:qqi4r2xkyjd6lamsx74rbn2loa
Wireless sensor positioning with ultrawideband fingerprinting
2006
2006 First European Conference on Antennas and Propagation
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In this paper, we consider the use of UWB signals for positioning and ranging based on fingerprinting using a channel impulse response database. ...
We use indoor measurements to demonstrate the reduction in the location estimation ambiguity and false alarm probability with an increase in the channel bandwidth. ...
Fig. 1 illustrates the concept of sensor position estimation with fingerprinting and database correlation based on the spatio-temporal impulse response of the propagation channel. ...
doi:10.1109/eucap.2006.4584996
fatcat:b5ggeb5jtnforot3kgp5ir3mwi
Contributions to passive acoustic oceanic tomography. II. Extraction of propagation features from single hydrophone measurement
2005
Europe Oceans 2005
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Extraction procedures are tested on real world data. For high frequency modulated calls, we propose a blind channel impulse response estimation algorithm. ...
On figure 7, a comparison between 5 channel impulse responses estimates is given: -One simulated with Bellhop with a 80m depth source (fig.7Curve 5) -One obtained by an Active-Adapted Filter (we extracted ...
doi:10.1109/oceanse.2005.1513178
fatcat:uyeapjos6fbpzhsccvrxme4h3y
Analysis of Indoor Uplink Optical Communication Positioning System Exploiting Multipath Reflections
[article]
2018
arXiv
pre-print
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This technique uses fingerprints based on the indoor optical wireless channel impulse response for localization. ...
We further present closed form analytical approximations for the chosen features of the channel impulse response. ...
Fig. 1 . 1 System configuration for visible light communication uplink system and the impulse responses based on it. ...
arXiv:1804.09360v1
fatcat:3gjjp2le2jdmfepo7nadfg4ody
Adaptive channel partitioning and modulation for linear time-varying channels
2003
IEEE Transactions on Communications
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We present a novel channel partitioning and modulation technique for linear time-varying (LTV) channels using adaptive bases of localized complex exponentials. ...
We show that localized complex exponentials are approximate eigenfunctions of underspread LTV channels. ...
Initial Channel Estimation The receiver estimates the channel impulse response for each subinterval using the pilot vectors for data blocks and , i.e., and . ...
doi:10.1109/tcomm.2003.815080
fatcat:y3c7vgufdnfmrh2bvosu3zy2ce
A robust Bayesian inference-based channel estimation in power line communication systems contaminated by impulsive noise
2016
Turkish Journal of Electrical Engineering and Computer Sciences
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In this paper, a relevance vector machine (RVM) is applied to the received complex data in order to estimate the power line communication channel impulse response in a baseband model. ...
Broadband power line communication based on an orthogonal frequency division multiplexing scheme is considered in this paper. ...
At the end of estimation, two parts of estimated channel response are merged to form the total and more actual complex-valued channel impulse response. ...
doi:10.3906/elk-1403-8
fatcat:luk5jehybjfljaxn4pmvqnihga
Location-aware adaptation and precoding for low complexity IR-UWB receivers
2008
2008 IEEE International Conference on Ultra-Wideband
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Based on channel impulse responses measured in a realistic environment the performance of both approaches is evaluated. Performance gains of 1 to 3 dB compared to energy detection can be obtained. ...
Second, at cluster head side the covariance matrix of the channel impulses response vectors is used for precoding optimization. ...
., to localize MS based on their channel impulse responses (CIR). ...
doi:10.1109/icuwb.2008.4653409
fatcat:skwhyf5z7rdmfi4g4u2svf3b44
A realtime testbed for performance evaluation of indoor TOA location system
2012
2012 IEEE International Conference on Communications (ICC)
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This paper presents a multipath visible, controllable and repeatable realtime testbed for indoor TOA location performance evaluation, based on RF channel emulator and Ray-tracing software. ...
Performance evaluation is an essential step in the development and deployment of an indoor TOA location system, in order to see the influence of multipath condition on ranging and localization accuracy ...
In this testbed, multipath condition and waveform propagation is emulated by a RF channel emulator based on the impulse response channel model, in which, the multipath condition is visible, controllable ...
doi:10.1109/icc.2012.6364455
dblp:conf/icc/HeLPW12
fatcat:3jnjhdj4jvhrvn6txrijf5nzta
DTTV Localization with Fingerprinting Technique and Clean Algorithm Based on Measurement Data
2022
Journal of Mobile Multimedia
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The mentioned foregoing system still have a limitation in some environment such as the GPS signal is not accessible to some environments, the CPS signal is based on a cell phone tower and the WPS is based ...
One of these features that can be used which is the localization system with DTTV broadcasting. ...
There is only one block added to the receiver part, which is clean algorithm process that will use the received signal to clean the channel impulse response by using the channel impulse response estimation ...
doi:10.13052/jmm1550-4646.18318
fatcat:4p3aehcflfan7mxpodp4kiy6ju
Non-stationary sound source localization based on zero crossings with the detection of onset intervals
2008
IEICE Electronics Express
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This paper presents a sound source localization algorithm based on zero crossings in acoustic reverberant environments. ...
Experimental results show that the presented algorithm which is based on zero crossings with the detection of direct components efficiently accomplishes sound source localization in reverberant environments ...
In this paper, we describe a non-stationary sound source localization method based on zero crossings, which efficiently detects the direct-path components by exploiting characteristics of acoustic impulse ...
doi:10.1587/elex.5.1054
fatcat:fj6iczkmzrgkhd3iznkoer3dfe
Imaging method: A strong tool for moving target tracking by a multistatic UWB radar system
2010
2010 IEEE 8th International Symposium on Applied Machine Intelligence and Informatics (SAMI)
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, localization and the tracking itself. ...
Firstly, the theoretical base of the particular phases is denoted and then an overview of the signal processing methods which can be applied within corresponding phase is given. ...
It can be observed from Fig. 9 that the estimation of the target position based on the localization phase is very noisy, deformed and shifted along the y -axis. ...
doi:10.1109/sami.2010.5423757
fatcat:6ikpccnx5ffbpppfnhvlzn6biy
Spatial Sound Localization via Multipath Euclidean Distance Matrix Recovery
2015
IEEE Journal on Selected Topics in Signal Processing
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The microphonesource distances correspond to the support of the early reflections in the room impulse response associated with the source signal acquisition. ...
The recording time of the microphone and generation of the source signal is asynchronous and estimated via the proposed procedure. ...
We estimate the support of the room impulse response (RIR) function using the blind channel identification approach based on sparse cross-relation formulation [19, 34, 35] . ...
doi:10.1109/jstsp.2015.2422677
fatcat:q26daej3zvgwxerztih2wn2c3q
Localization Performance Under Middle and Low Frequency Sound Source Based on Time Reversal Method in Enclosed Space
2019
IEEE Access
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matching based on time reversal method. ...
Therefore, this paper studies the localization performance under middle and low frequency sound sources cover single-frequency sinusoidal signal, bandwidth signal, and impulse signal through dual-channel ...
In the impulse signals, the localization effect of the explosive sound is better. In general, dual-channel matching method based on time reversal on SSL has masses a lot of advantage. ...
doi:10.1109/access.2018.2884777
fatcat:gzgekswpczantou6jvjabbkzja
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