An introduction to signal detection and estimation (2nd ed.)
An introduction to signal detection and estimation (2nd ed.)
Cramér-Rao lower bounds for the synchronization of UWB signals
EURASIP Journal on Applied Signal Processing
Least squares algorithms for time-of-arrival-based mobile location
IEEE Transactions on Signal Processing
MIMO UWB-IR noncoherent transceiver with Poisson wireless models
ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
Behaviors of MIMO UWB-IR transceiver for statistical wireless channels
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 1
Experimental analysis of IEEE 802.15.4a CSS ranging and its implications
Computer Communications
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The theoretical and practical performance limits of a 2D ultra-wideband impulse-radio localization system operating in the far field are studied under the assumption that estimates of location are based on time-difference-of-arrival (TDOA) measurements. Performance is evaluated in the presence of errors in both the TDOA measurements and the sensor locations. The performance of both optimal (maximum-likelihood) and suboptimal location estimation algorithms is studied and compared with the theoretical performance limit defined by the Cramér-Rao lower bound on the variance of unbiased TDOA location estimates. A novel weighted total-least-squares algorithm is introduced that compensates somewhat for errors in sensor positions and reduces the bias in location estimation compared with a widely used weighted least-squares approach. In addition, although target tracking per se is not considered in this paper, performance is evaluated both under the assumption that sequential location estimates are not aggregated as well as under the assumption that some sort of tracker is available to aggregate a sequence of estimates.