TY - GEN
T1 - Cramér-rao bound for TOA estimations in UWB positioning systems
AU - Sieskul, Bamrung Tau
AU - Kaiser, Thomas
PY - 2005
Y1 - 2005
N2 - This paper deals with time delay estimation for a UWB positioning system. We consider the a priori model in which the distributions of path gain and the desired time delay are known. Joint probability density functions for both parameters are cast into explicit form. Then, we address parameter estimations based on maximum likelihood as well as maximum a posteriori. The Fisher information matrix (FIM) of the ordinary Cramér-Rao bound (CRB) is available from maximum likelihood criterion. For three possible cases of a priori knowledge, the inherent accuracy are provided by a posteriori CRBs, which can be derived from three possible assumptions. All theoretical results are unconditioned on any specification of UWB pulse and hence are plausible to extend to further performance analysis.
AB - This paper deals with time delay estimation for a UWB positioning system. We consider the a priori model in which the distributions of path gain and the desired time delay are known. Joint probability density functions for both parameters are cast into explicit form. Then, we address parameter estimations based on maximum likelihood as well as maximum a posteriori. The Fisher information matrix (FIM) of the ordinary Cramér-Rao bound (CRB) is available from maximum likelihood criterion. For three possible cases of a priori knowledge, the inherent accuracy are provided by a posteriori CRBs, which can be derived from three possible assumptions. All theoretical results are unconditioned on any specification of UWB pulse and hence are plausible to extend to further performance analysis.
UR - https://www.scopus.com/pages/publications/33645920937
M3 - Conference contribution
AN - SCOPUS:33645920937
SN - 078039397X
SN - 9780780393974
T3 - ICU 2005: 2005 IEEE International Conference on Ultra-Wideband, Conference Proceedings
SP - 408
EP - 413
BT - ICU 2005
T2 - ICU 2005: 2005 IEEE International Conference on Ultra-Wideband
Y2 - 5 September 2005 through 8 September 2005
ER -