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.

channel and position uncertainty

unicast and multicast transmissions

Wireless network localization

OFDM

semidefinite optimization

positioning

robust design

subcarrier power allocation

Författare

A. Shahmansoori

Universitat Autònoma de Barcelona

G. Seco-Granados

Universitat Autònoma de Barcelona

Henk Wymeersch

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

IEEE Transactions on Wireless Communications

1536-1276 (ISSN)

Vol. 16 2027-2038

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/twc.2017.2662678