Lookup NU author(s): Aws Al-Qaisi,
Professor Bayan Sharif,
Dr Charalampos Tsimenidis,
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In this paper, we introduce a Quantized Cramer Rao Bound (Q-CRB) method, which adapts the use of the CRB to handle grid-based localization algorithms with certain constraints, such as localization boundaries. In addition, we derive a threshold granularity level which identifies where the CRB can be appropriately applied to this type of algorithm. Moreover, the derived threshold value allows the users of grid-based LSE techniques to probably avoid some unnecessary complexities associated with using high grid resolutions. To examine the feasibility of the new proposed bound, the grid-based least square estimation (LSE) technique was implemented. The Q-CRB was used to evaluate the performance of the LSE method under extensive simulation scenarios. The results show that the Q-CRB provided a tight bound in the sense that the Q-CRB can characterize the behaviour of location errors of the LSE technique at various system parameters, e.g. granularity levels, measurement accuracies, and in the presence or absence of localization boundaries.
Author(s): Al-Qaisi A, Alhasanat AI, Mesleh A, Sharif BS, Tsimenidis CC, Neasham JA
Publication type: Article
Publication status: Published
Journal: Annals of Telecommunications
Print publication date: 01/06/2016
Online publication date: 11/03/2016
Acceptance date: 11/02/2016
ISSN (print): 0003-4347
ISSN (electronic): 1958-9395
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