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Dithering in quantized RSS based localization

Di Jin, Abdelhak M. Zoubir, Feng Yin, Carsten Fritsche, Fredrik Gustafsson
2015 2015 IEEE 6th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP)  
In order to mitigate the undesired quantization effect in the observations, the dithering technique is adopted.  ...  without dithering.  ...  CONCLUSION In this paper, we have addressed the problem of localization based on quantized RSS measurements.  ... 
doi:10.1109/camsap.2015.7383782 dblp:conf/camsap/JinZYFG15 fatcat:3x7f4jghgbfadbt45fhvrysgqm

Low-Complexity, Distributed Characterization of Interferers in Wireless Networks

Vibhav Kapnadak, Murat Senel, Edward J. Coyle
2011 International Journal of Distributed Sensor Networks  
This produces a dithering effect that provides better performance than previous techniques that use different non-identical thresholds or the case in which all the sensor motes use an identical non-optimal  ...  Each sensor makes a noisy measurement of the received signal strength (RSS) from an interferer, compares its measurement to a threshold, and then transmits the resulting bit to a cluster head (CH) over  ...  In [14] , the authors study channel aware target localization using 1-bit quantized data.  ... 
doi:10.1155/2011/980953 fatcat:izacclen7nb2rlmq2e3g2jxaoa

Positioning via direct localisation in C-RAN systems

Seongah Jeong, Osvaldo Simeone, Alexander Haimovich, Joonhyuk Kang
2016 IET Communications  
localization and direct localization with or without dithering via numerical results.  ...  In this correspondence, the performance of direct localization is studied for a C-RAN system by accounting for the effect of fronthaul quantization.  ...  Based on the quantized signals {R R R j (k)}, obtained from the received signal with or without dithering, the CU estimates the source's position.  ... 
doi:10.1049/iet-com.2016.0403 fatcat:kc7kyc4xb5ez3ctnxcx2zghv4y

Positioning via Direct Localization in C-RAN Systems [article]

Seongah Jeong, Osvaldo Simeone, Alexander Haimovich, Joonhyuk Kang
2017 arXiv   pre-print
In this paper, the performance of direct localization is studied by accounting for the effect of fronthaul quantization with or without dithering.  ...  However, in a C-RAN system with capacity limited fronthaul links, the advantage of direct localization may be offset by the distortion caused by the quantization of the received signal at the RUs.  ...  The CU performs localization based on the quantized signals. Specifically, as discussed below, we adopt a standard uniform dithered quantization [16] , [17] , where the dither is known to the CU.  ... 
arXiv:1511.07637v3 fatcat:fhxokjck5bchxikn4e2k4ksu2i

Matching Pursuits with random sequential subdictionaries

Manuel Moussallam, Laurent Daudet, Gaël Richard
2012 Signal Processing  
A theoretical modeling based on order statistics is provided, along with experimental evidence showing that the novel algorithm can be efficiently used on sparse approximation problems.  ...  We propose using a non adaptive random sequence of subdictionaries in the decomposition process, thus parsing a large dictionary in a probabilistic fashion with no additional projection cost nor parameter  ...  Bob Sturm for the interest he showed in our work and his relevant remarks and advice. Discussing with him was both an opportunity and a pleasure.  ... 
doi:10.1016/j.sigpro.2012.03.019 fatcat:cgezzj7p3fcjlda2g6x4iebp7u

Distributed Base Station: A Concept System for Long-Range Broadband Wireless Access [article]

Muhammed Faruk Gencel, Maryam Eslami Rasekh, Upamanyu Madhow
2018 arXiv   pre-print
First, to combat the drop in per-node SNR with extended range, we design a feedback-based adaptation strategy that is suitably robust to noise.  ...  At a given range, N cooperating transmitters can achieve N^2-fold increase in received power compared to that for a single transmitters, and feedback-based algorithms with near-ideal performance have been  ...  This implies, for example, that the receiver cannot perform spatial channel estimation followed by codebookbased quantization, or exploit sparsity, unlike in existing feedback-based techniques in massive  ... 
arXiv:1803.02877v1 fatcat:zy3vhmhzgvgbjfcu4xfmutlzfm

Received-Signal-Strength Threshold Optimization Using Gaussian Processes

Feng Yin, Yuxin Zhao, Fredrik Gunnarsson, Fredrik Gustafsson
2017 IEEE Transactions on Signal Processing  
Among others, we focus on Gaussian process regression (GPR) based RSS models and positioning metric computation.  ...  The optimal RSS threshold is found through minimizing the best achievable localization root-mean-square-error formulated with the aid of fundamental lower bound analysis.  ...  Essentially, a proximity measurement can be treated as a quantized RSS with merely two quantization levels [3, 4] .  ... 
doi:10.1109/tsp.2017.2655480 fatcat:am2j36fvirebbakfqe2bc4lglq

Distributed Base Station: A Concept System for Long-Range Broadband Wireless Access

Muhammed Faruk Gencel, Maryam Eslami Rasekh, Upamanyu Madhow
2021 Electronics  
First, to combat the drop in per-node SNR with extended range, we design a feedback-based adaptation strategy that is suitably robust to noise.  ...  At a given range, N cooperating transmitters can achieve N2-fold increase in received power compared to that for a single transmitters, and feedback-based algorithms with near-ideal performance have been  ...  This implies, for example, that the receiver cannot perform spatial channel estimation followed by codebook-based quantization, or exploit sparsity, unlike in existing feedback-based techniques in massive  ... 
doi:10.3390/electronics10192396 fatcat:g54akxinlne3pftynpbpv4ikwi

Fundamental Bounds on Position Estimation Using Proximity Reports

Feng Yin, Yuxin Zhao, Fredrik Gunnarsson
2016 2016 IEEE 83rd Vehicular Technology Conference (VTC Spring)  
In this paper, we aim to derive two types of fundamental lower bound, namely the Cramér-Rao bound and the Barankin bound, on the mean-square-error of any proximity report based position estimator.  ...  There is a big trend nowadays toward indoor proximity report based positioning.  ...  We acknowledge the support from SenionLab, who provided the BLE beacons as well as associated positioned RSS measurement data.  ... 
doi:10.1109/vtcspring.2016.7504253 dblp:conf/vtc/YinZG16 fatcat:twaep43r5neghow33ugawmqtdi

Optimal Fronthaul Quantization for Cloud Radio Positioning

Seongah Jeong, Osvaldo Simeone, Alexander Haimovich, Joonhyuk Kang
2016 IEEE Transactions on Vehicular Technology  
In a C-RAN, the baseband processing, including localization, is carried out at a centralized control unit (CU) based on quantized baseband signals received from the RUs over finite-capacity fronthaul links  ...  In this paper, the problem of maximizing the localization accuracy over fronthaul quantization/compression is formulated by adopting the Cramér-Rao bound (CRB) on the localization accuracy as the performance  ...  In [7] , [8] , RSS-based localization is considered based on nonuniform scalar quantizer.  ... 
doi:10.1109/tvt.2015.2431491 fatcat:llvmniwlvbhs3kfbgnz4k6docq

Gossip Algorithms for Distributed Signal Processing

Alexandros G. Dimakis, Soummya Kar, José M. F. Moura, Michael G. Rabbat, Anna Scaglione
2010 Proceedings of the IEEE  
distributed estimation, source localization, and compression.  ...  We discuss issues related to gossiping over wireless links, including the effects of quantization and noise, and we illustrate the use of gossip algorithms for canonical signal processing tasks including  ...  The aim in this section is to illustrate how gossip algorithms can be used for source localization using received signal strength (RSS) measurements.  ... 
doi:10.1109/jproc.2010.2052531 fatcat:ssu7tyrodbgwhaoiogfdcyqesm

Sensor Networks for High-Confidence Cyber-Physical Systems

Feng Xia, Tridib Mukherjee, Yan Zhang, Ye-Qiong Song
2011 International Journal of Distributed Sensor Networks  
In the paper "A mobile-beacon-assisted sensor network localization based on RSS and connectivity observations," G.  ...  Teng et al. propose a distributed mobile-beacon-assisted localization scheme based on received signal strength (RSS) and connectivity observations (named MRC) with a specific trajectory in static WSNs.  ...  Acknowledgments The work described in this paper is based on results of the WSAN4CIP Project (http://www.wsan4cip.eu), which receives research funding from the European Community's 7th Framework Programme  ... 
doi:10.1155/2011/245734 fatcat:lswungc2orda5pcqvpyqu7vrna

All-digital TX frequency synthesizer and discrete-time receiver for Bluetooth radio in 130-nm CMOS

R.B. Staszewski, K. Muhammad, D. Leipold, Chih-Ming Hung, Yo-Chuol Ho, J.L. Wallberg, C. Fernando, K. Maggio, R. Staszewski, T. Jung, Jinseok Koh, S. John (+9 others)
2004 IEEE Journal of Solid-State Circuits  
The conventional RF frequency synthesizer architecture, based on the voltage-controlled oscillator and the phase/frequency detector and charge-pump combination, has been replaced with a digitally controlled  ...  We present a single-chip fully compliant Bluetooth radio fabricated in a digital 130-nm CMOS process.  ...  The whole-clock-domain quantization error is corrected by means of a fractional error correction circuit which is based on a TDC.  ... 
doi:10.1109/jssc.2004.836345 fatcat:vs2iojnjxjgwzplw3klq3byeke

The Philosophy of PCM

B.M. Oliver, J.R. Pierce, C.E. Shannon
1948 Proceedings of the IRE  
The quantization error as a function of time is shown in more detail in Figure 2 . Again, a simple sawtooth waveform provides a sufficiently accurate model for analysis.  ...  in SNR as shown in Eq. 10.  ...  amount of system noise which acts as a dither signal to further randomize the quantization error spectrum.  ... 
doi:10.1109/jrproc.1948.231941 fatcat:n5mzm7dp45cojmrmzpanr5zv2y

AN X-RAY-SELECTED GALAXY CLUSTER IN THE LOCKMAN HOLE AT REDSHIFT 1.753

J. Patrick Henry, Mara Salvato, Alexis Finoguenov, Nicolas Bouche, Hermann Brunner, Vadim Burwitz, Peter Buschkamp, Eiichi Egami, Natasha Förster-Schreiber, Sotiria Fotopoulou, Reinhard Genzel, Günther Hasinger (+3 others)
2010 Astrophysical Journal  
The X-ray luminosity of the cluster is 3.68 +/- 0.70 x 10^43 erg s^-1 in the 0.1 - 2.4 keV band.  ...  The optical/IR properties of the BCG imply its formation redshift was ~5 if its stars formed in a short burst.  ...  We applied the flexure correction quantized in single pixel steps when needed.  ... 
doi:10.1088/0004-637x/725/1/615 fatcat:u7vz7x3r7vb2poghkqp4lzewqq
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