On the Trade-Off Between Accuracy and Delay in Cooperative UWB Localization: Performance Bounds and Scaling Laws
Journal article, 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

Author

Gabriel Garcia

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Srikar Muppirisetty

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Elad Schiller

Chalmers, Computer Science and Engineering (Chalmers), Networks and Systems (Chalmers)

Henk Wymeersch

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

IEEE Transactions on Wireless Communications

1536-1276 (ISSN)

Vol. 13 8 4574-4585 6781631

Robust and Fault-Tolerant Cooperative Positioning

Swedish Research Council (VR), 2011-01-01 -- 2013-12-31.

Cooperative Situational Awareness for Wireless Networks (COOPNET)

European Commission (FP7), 2011-05-01 -- 2016-04-30.

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

European Commission (FP7), 2011-10-01 -- 2014-12-31.

Subject Categories

Telecommunications

Signal Processing

DOI

10.1109/TWC.2014.2314662

More information

Created

10/8/2017