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Cooperative multipath-aided indoor localization

S. van de Velde ; Henk Wymeersch (Institutionen för signaler och system, Kommunikationssystem) ; P. Meissner ; K. Witrisal ; H. Steendam
IEEE Wireless Communications and Networking Conference, WCNC 2012, Paris, 1-4 April 2012 (1525-3511). p. 3107-3111. (2012)
[Konferensbidrag, refereegranskat]

To obtain good position accuracy with state-of-the-art indoor localization algorithms, multiple anchors must be within radio range of the user. However, anchor placement and maintenance is expensive. By reducing the number of anchors per room, overall costs are reduced. In [1], an algorithm that can estimate the position of a user using only one anchor and a priori floor plan information. However, performance for static localization was poor due to the presence of ambiguities. This paper describes a cooperative positioning algorithm that utilizes a single anchor and provides both the position and the position uncertainty for multiple users, by letting the users exchange their position information. The problem is represented with a factor graph, and belief propagation (BP) is used to extract the positions and their accuracy. The proposed cooperative algorithm leads to a significant improvement of the positioning accuracy compared to the non-cooperative method from [1].

Denna post skapades 2012-09-20. Senast ändrad 2016-03-08.
CPL Pubid: 163631


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Institutioner (Chalmers)

Institutionen för signaler och system, Kommunikationssystem


Elektroteknik och elektronik

Chalmers infrastruktur



Denna publikation är ett resultat av följande projekt:

Cooperative Situational Awareness for Wireless Networks (COOPNET) (EC/FP7/258418)

Robust and Fault-Tolerant Cooperative Positioning (VR//2010-5889)