Power Allocation for OFDM Wireless Network Localization Under Expectation and Robustness Constraints
Journal article, 2017

In location-aware wireless networks, mobile nodes (agents) can obtain their positions using range measurements to other nodes with known positions (anchors). Optimal subcarrier power allocation at the anchors reduces positioning error and improves network lifetime and throughput. We present an optimization framework for subcarrier power allocations in network localization with the imperfect knowledge of network parameters based on the fundamental statistical limits. Power allocations with expectation and robustness constraints are obtained using semidefinite optimization problems in noniterative and iterative forms with both unicast and multicast transmissions. Results show that the allocations provide more accurate localization than non-robust designs under channel and agents positions uncertainty.

positioning

robust design

semidefinite optimization

OFDM

unicast and multicast transmissions

Wireless network localization

channel and position uncertainty

subcarrier power allocation

Author

A. Shahmansoori

Universitat Autonoma de Barcelona (UAB)

G. Seco-Granados

Universitat Autonoma de Barcelona (UAB)

Henk Wymeersch

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

IEEE Transactions on Wireless Communications

1536-1276 (ISSN)

Vol. 16 3 2027-2038

Cooperative Situational Awareness for Wireless Networks (COOPNET)

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

High precision positioning for cooperative ITS applications

European Commission (Horizon 2020), 2015-01-01 -- 2017-12-31.

Multi-technology positioning professionals (MULTI-POS)

European Commission (FP7), 2012-10-01 -- 2016-09-30.

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/twc.2017.2662678

More information

Latest update

8/26/2019