DocumentCode :
2348294
Title :
Compressive sensing based indoor positioning with denosing and filtering in LF space
Author :
Deng, Jingang ; Cui, Qimei ; Zhang, Xuefei ; Xu, Xiaodong
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
fYear :
2012
fDate :
9-12 Sept. 2012
Firstpage :
2477
Lastpage :
2482
Abstract :
In this paper, we propose a novel compressive sensing (CS) based indoor positioning approach, which uses the signal strength differentials (SSDs) as location fingerprints (LFs). The target location is regarded as an unknown sparse location vector in the discrete spatial domain. Then it just takes a little number of online noisy SSD measurements for the exact recovery of the sparse location vector by solving an ℓ1-minimization program. In order to mitigate the influences of large measurements noise on the recovery accuracy, an LF space denosing algorithm is proposed to discriminate the localization contribution rate of every LF according to its SSD variation. Moreover, an LF space filtering strategy is also exploited to lower the high computational complexity of the CS recovery algorithm. Both experimental results and simulations demonstrate that we achieve remarkable improvements on the positioning performance of the CS based approach by using the two proposed algorithms.
Keywords :
computational complexity; filtering theory; indoor radio; minimisation; signal denoising; signal reconstruction; ℓ1-minimization program; CS recovery algorithm; LF space denosing algorithm; LF space filtering strategy; SSD; compressive sensing; computational complexity; discrete spatial domain; indoor positioning approach; location fingerprint space; online noisy SSD measurements; signal strength differentials; sparse location vector; target location; unknown sparse location vector; Accuracy; Clustering algorithms; Compressed sensing; Computational complexity; Estimation; Receivers; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on
Conference_Location :
Sydney, NSW
ISSN :
2166-9570
Print_ISBN :
978-1-4673-2566-0
Electronic_ISBN :
2166-9570
Type :
conf
DOI :
10.1109/PIMRC.2012.6362773
Filename :
6362773
Link To Document :
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