Positioning Algorithms for Cooperative networks in the presence of an unknown Turn-around time
Paper i proceeding, 2011

This paper addresses the problem of single node positioning in cooperative network using hybrid two-way time-of-arrival and time-difference-of-arrival where, the turn-around time at the target node is unknown. Considering the turn-around time as a nuisance parameter, the derived maximum likelihood estimator (MLE) brings a difficult global optimization problem due to local minima in the cost function of the MLE. To avoid drawbacks in solving the MLE, we obtain a linear two-step estimator using non-linear pre-processing which is algebraic and closed-form in each step. To compare different methods, Cramer-Rao lower bound (CRLB) is derived. Simulation results confirm that the proposed linear estimator attains the CRLB for sufficiently high signal-to-noise ratios.

Författare

Mohammad Reza Gholami

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Sinan Gezici

Bilkent Universitesi

Erik Ström

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Mats Rydström

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

The 12th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

166-170 5990386

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Signalbehandling

DOI

10.1109/SPAWC.2011.5990386

ISBN

978-1-4244-9332-6