On the Trade-Off Between Accuracy and Delay in Cooperative UWB Localization: Performance Bounds and Scaling Laws
Artikel i vetenskaplig tidskrift, 2014

Ultra-wide bandwidth (UWB) systems allow for accurate positioning in environments where global navigation satellite systems may fail, especially when complemented with cooperative processing. While cooperative UWB has led to centimeter-level accuracies, the communication overhead is often neglected. We quantify how accuracy and delay trade off in a wide variety of operation conditions. We also derive the asymptotic scaling of accuracy and delay, indicating that, in some conditions, standard cooperation offers the worst possible tradeoff. Both avenues lead to the same conclusion: indiscriminately targeting increased accuracy incurs a significant delay penalty. Simple countermeasures can be taken to reduce this penalty and obtain a meaningful accuracy/delay trade-off.

navigation

wide-band localization

technology

wireless networks

channels

fundamental limits

Författare

Gabriel Garcia

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Srikar Muppirisetty

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Elad Schiller

Chalmers, Data- och informationsteknik, Nätverk och system

Henk Wymeersch

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

IEEE Transactions on Wireless Communications

1536-1276 (ISSN)

Vol. 13 4574-4585 6781631

Robust och feltolerant kooperativ positionering

Vetenskapsrådet (VR), 2011-01-01 -- 2013-12-31.

Coopnet

Europeiska kommissionen (FP7), 2011-05-01 -- 2016-04-30.

Kernel-based ARchitecture for safetY-critical cONtrol (Karyon)

Europeiska kommissionen (FP7), 2011-10-01 -- 2014-12-31.

Ämneskategorier

Telekommunikation

Signalbehandling

DOI

10.1109/TWC.2014.2314662