A Fuzzy-Based Angle-of-Arrival Estimation System (AES) Using Radiation Pattern Reconfigurable (RPR) Antenna and Modified Gaussian Membership Function

Jais, M. I.; Sabapathy, Thennarasan; Jusoh, M.; Ahmad, Rais; Jamaluddin, Mohd Haizal; Kamarudin, Muhammad Ramlee; Ehkan, Phaklen; Loganathan, L. Murukesan; Soh, Ping Jack

doi:10.1109/access.2019.2945789

Cited by 10 publications

(7 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are a variety of RPRAs that have been presented in the literature that could potentially be suited for the proposed application as the element in a UCA for 2D direction finding, many of which use RF switches to electrically connect or disconnect sections of conductors (e.g., see the RPRA designs discussed in [1], [2], [21]- [29], [41]- [43]). For example, in [41] both beam steering and resonant frequency reconfigurability was shown using a grid structure composed of different sized patches along with RF MEMS switches, and it was able to achieve beam tilting over a range of 120 • .…”

Section: A Rpra Design and Simulationmentioning

confidence: 99%

“…11, this simulation consisted of incident signals coming from all potential (θ, φ) directions with a 1 • resolution and T = 100 trials at each incident angle. Co-polarized incident waves were used for clarity and simplicity as is common in many prior works (e.g., [4], [5], [7], [13], [17], [21]- [26], [29], [33]). The DoA was estimated for each trial, and the overall RMSE across all trials and all incident angles was computed.…”

Section: B Doa Performance With Practical Rpra Elementsmentioning

confidence: 99%

See 1 more Smart Citation

2D Direction of Arrival Estimation Using Uniform Circular Arrays With Radiation Pattern Reconfigurable Antennas

Jackson

2022

IEEE Access

View full text Add to dashboard Cite

This paper focuses on direction of arrival (DoA) estimation using adaptive arrays that consist of radiation pattern reconfigurable antenna (RPRA) elements for 2D direction finding (i.e., azimuth and elevation DoA estimation). In particular, uniform circular arrays (UCAs) are explored that use RPRA elements with two different elevation radiation pattern states to achieve unambiguous estimates over all possible incident angles. Theoretical cardioid-type directional patterns are investigated to determine the pattern states that minimize overall DoA estimation error, and the performance of 3-, 4-, and 5-element RPRA UCAs is compared with baseline theoretical arrays composed of isotropic elements. The results demonstrate that RPRA UCAs with optimized cardioid patterns can achieve similar accuracy to the baseline arrays, but with fewer antennas/front-ends. For example, a 4-element RPRA UCA can achieve approximately the same root mean square error (RMSE) as a 6-element uniform spherical array composed of isotropic elements. Furthermore, unambiguous estimates can be achieved over all incident angles with electrically large UCA radii using optimized RPRA elements, which can further improve accuracy and increase bandwidth. To demonstrate the feasibility of the technique, a practical RPRA was designed at 6 GHz with a pattern that approximates the optimized cardioid, and the performance meets or exceeds the theoretical pattern performance for RMSEs less than 3 • .

show abstract

Section: A Rpra Design and Simulationmentioning

confidence: 99%

Section: B Doa Performance With Practical Rpra Elementsmentioning

confidence: 99%

2D Direction of Arrival Estimation Using Uniform Circular Arrays With Radiation Pattern Reconfigurable Antennas

Jackson

2022

IEEE Access

View full text Add to dashboard Cite

show abstract

“…DoA estimation systems can be of high cost and complexity even at low frequencies [8]. This paper proposes a new low complexity coarse DoA estimation at sub-6GHz to aid in the beam scanning process of the mmWave antenna system [9]. The proposed coarse DoA technique uses a Reconfigurable Alford Loop Antenna (RALA) [10] that requires only a single RF chain transceiver.…”

Section: Introductionmentioning

confidence: 99%

Noncooperative Sub-6GHz Reconfigurable Antenna DoA Estimation to Aid mmWave Analog Beamforming: Algorithm and Measurements

et al. 2021

View full text Add to dashboard Cite

Envisioned analog beamforming, high-gain, phased antenna array systems operating at millimeter-wave (mmWave) frequencies require a fast beam selection process for practical implementation in mobile units in a changing propagation environment. This paper proposes a novel direction of arrival (DoA) estimation technique using a single RF chain reconfigurable Alford loop antenna at sub-6GHz frequencies to facilitate a rapid optimal beam selection process at mmWave frequencies. Measurement-based DoA estimation, demonstration of reduced beam scanning overhead at mmWave frequencies, and design of a software-defined-radio (SDR)-based testbed for evaluating the proposed integrated system are addressed. INDEX TERMSBeamforming, direction of arrival (DoA), millimeter wave (mmWave), phased antenna array, reconfigurable antenna, 28 GHz antenna.

show abstract

“…More recently, non-traditional artificial intelligence techniques such as fuzzy clustering prediction [2], artificial neural networks [2]- [6], deep learning [7], [8] and machine learning [4], [9] have also been used to estimate the path loss in different environments. These models are also been used in angle-of-arrival estimation [10], large-scale signal fading modeling [11], and indoor localization [12].…”

Section: Introductionmentioning

confidence: 99%

Measurement and Prediction of Short-Range Path Loss between 27 and 40 GHz in University Campus Scenarios

Ramos¹,

Vargas²,

Mello

et al. 2021

JCIS

View full text Add to dashboard Cite

A Fuzzy-Based Angle-of-Arrival Estimation System (AES) Using Radiation Pattern Reconfigurable (RPR) Antenna and Modified Gaussian Membership Function

Cited by 10 publications

References 30 publications

2D Direction of Arrival Estimation Using Uniform Circular Arrays With Radiation Pattern Reconfigurable Antennas

2D Direction of Arrival Estimation Using Uniform Circular Arrays With Radiation Pattern Reconfigurable Antennas

Noncooperative Sub-6GHz Reconfigurable Antenna DoA Estimation to Aid mmWave Analog Beamforming: Algorithm and Measurements

Measurement and Prediction of Short-Range Path Loss between 27 and 40 GHz in University Campus Scenarios

Contact Info

Product

Resources

About