Change Point Detection-Based TOA Estimation in UWB Indoor Ranging Systems

Nouali, Ibrahim Yassine; Slimane, Zohra; Abdelmalek, Abdelhafid

doi:10.1109/tsp55681.2022.9851238

Cited by 4 publications

(2 citation statements)

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“…In order to verify the practicability of using the proposed method, we carry out a complexity analysis of the fine estimation, which is the difference between two methods. The traditional scheme requires N rep times complex multiplications in (6) and 2N rep in (8), where N rep is the number of repeated SG transmissions. For a frequency hopping distance of 5 or 7, the complex multiplications of (20) is N rep times.…”

Section: Complexity Analysismentioning

confidence: 99%

“…The authors of [7] presented a novel approach for fast joint delay and angle estimation of multipath signals using an improved propagator method, with the objective of reducing the computational complexity of the two-dimensional multiple signal classification (2D-MUSIC) algorithm. The authors of [8] proposed a change point detection algorithm, as an alternative to the traditional threshold crossing technique, for accurate ToA estimation based on energy detection. The aim of this approach was to achieve precise estimation of the first ToA path in complex indoor environments.…”

Section: Introductionmentioning

confidence: 99%

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An Efficient Random Access Reception Algorithm for ToA Estimation in NB-IoT

Li¹,

Xiang

Ding

et al. 2023

Electronics

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Narrowband Internet of Things (NB-IoT) aims to provide wide coverage for a massive number of low-cost devices. Therefore, an NB-IoT physical random access channel (NPRACH) preamble based on a single tone signal with frequency hopping was designed, enabling the base station to estimate the time-of-arrival (ToA) values for realizing uplink synchronization among multiple users. However, due to residual carrier frequency offset (RCFO) in the NPRACH preamble, it is crucial to keep the accuracy of the ToA estimation. Recognizing this urgency, in this paper we first judiciously investigate the effect of the hooping distance on ToA estimation. With which, we propose an efficient receiving algorithm to improve the accuracy of ToA estimation. The main aim of the algorithm is to treat two consecutive symbol groups as a whole and then carry out difference calculations on the two newly constituted symbol groups to construct a more logical frequency hopping distance. Extensive numerical results validate the superiorly of our proposed scheme compared against conventional strategies, showing that the probability of the ToA estimation obtained by this method is 99% within the acceptable error range.

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Section: Complexity Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%