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

Chalmers, Signaler och system, Kommunikations- och antennsystem, Kommunikationssystem

Sinan Gezici

Bilkent Universitesi

Erik Ström

Chalmers, Signaler och system, Kommunikations- och antennsystem, Kommunikationssystem

Mats Rydström

Chalmers, Signaler och system, Kommunikations- och antennsystem, 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

Mer information

Skapat

2017-10-08