Power Allocation for OFDM Wireless Network Localization Under Expectation and Robustness Constraints
Artikel i vetenskaplig tidskrift, 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.

semidefinite optimization

OFDM

robust design

channel and position uncertainty

positioning

Wireless network localization

unicast and multicast transmissions

subcarrier power allocation

Författare

A. Shahmansoori

Universitat Autonoma de Barcelona (UAB)

G. Seco-Granados

Universitat Autonoma de Barcelona (UAB)

Henk Wymeersch

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

IEEE Transactions on Wireless Communications

1536-1276 (ISSN)

Vol. 16 3 2027-2038 7874286

High precision positioning for cooperative ITS applications

Europeiska kommissionen (EU) (EC/H2020/636537), 2015-01-01 -- 2017-12-31.

Multi-technology positioning professionals (MULTI-POS)

Europeiska kommissionen (EU) (EC/FP7/316528), 2012-10-01 -- 2016-09-30.

Coopnet

Europeiska kommissionen (EU) (EC/FP7/258418), 2011-05-01 -- 2016-04-30.

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/twc.2017.2662678

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Senast uppdaterat

2022-04-05