A beamforming comparative study of least mean square, genetic algorithm and grey wolf optimization algorithms for multipath smart antenna system

Mohsin, Asma Issa; Daghal, Asaad S.; Sallomi, Adheed Hasan

doi:10.12928/telkomnika.v18i6.16970

Cited by 6 publications

(5 citation statements)

References 17 publications

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“…The GA was not utilized as a beamformer in the current study because it is relatively slow in reaching the steady state solution and it requires a large number of iterations. Also, some studies reported that the LMS technique achieves better directivity than GA in multipath environment, which provides sharper and more precise beam patterns [51]. Also, it was reported that GA is not efficient in mitigating interfering sources as LMS [51,52].…”

Section: B Ga-lms Beamforming Resultsmentioning

confidence: 99%

“…Also, some studies reported that the LMS technique achieves better directivity than GA in multipath environment, which provides sharper and more precise beam patterns [51]. Also, it was reported that GA is not efficient in mitigating interfering sources as LMS [51,52]. On the other hand, the GA algorithm was proven to be an efficient for array thinning [27,30,31,36] so that it was utilized for thinning the proposed array design.…”

Section: B Ga-lms Beamforming Resultsmentioning

confidence: 99%

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Synthesis of Wideband Thinned Eisenstein Fractile Antenna Arrays With Adaptive Beamforming Capability and Reduced Side-Lobes

2022

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A modern design of fractal antenna arrays, called fractile array, which exhibits a fractal boundary contour within a tiled plane, is explored for enhanced array performance. In this paper, the Eisenstein fractile array is introduced to exploit the unique geometrical features of fractiles that allow multiband and wideband operation and avoid grating lobes in the radiation pattern even, in some cases, when the array elements' spacing is greater than the half wavelength. To alleviate the large number of elements and the high Side-Lobe Level (SLL) occurred at large scales, the Genetic Algorithm (GA) optimization technique is considered for thinning the proposed antenna array by estimating the optimal set of "on" and "off" elements corresponding to the minimum SLL without degrading the directivity of the radiation pattern. Also, the proposed array configuration is designed with adaptive beamforming capability using the Least Mean Square (LMS) technique. The effectiveness of the proposed GA-LMS approach is investigated by performing several MATLAB simulations under various set of array configurations. Results reveal that the suggested thinned Eisenstein fractile antenna array using GA-LMS approach is superior in terms of multiband and wideband performance, array element reduction, SLL reduction, grating lobe elimination, and beamforming capability. This elucidates the robustness of the suggested thinned Eisenstein fractile array as a promising design for multiband, wideband, compact, inexpensive, and adaptive smart antennas in modern wireless systems.

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Section: B Ga-lms Beamforming Resultsmentioning

confidence: 99%

Section: B Ga-lms Beamforming Resultsmentioning

confidence: 99%

Synthesis of Wideband Thinned Eisenstein Fractile Antenna Arrays With Adaptive Beamforming Capability and Reduced Side-Lobes

2022

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“…The search agent's location [X, Y] is modified in accordance with the position of the prey as determined so far [𝑋𝑋 * , 𝑌𝑌 * ]. The coefficient vectors 𝐴𝐴 and 𝐶𝐶 are changed to get the optimal agent at various locations [31]. Grey wolves are led by alpha, with help from beta and delta.…”

Section: 𝑋𝑋(𝐾𝐾 + 1) = 𝑋𝑋 𝑝𝑝 (𝐾𝐾) − 𝐴𝐴 • 𝐷𝐷mentioning

confidence: 99%

Improving Mobile Location Prediction Using the Grey Wolf Optimization Algorithm

Nsaif

Sallomi

2023

Int. J. Interact. Mob. Technol.

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The importance of locating a mobile phone has increased significantly during last decade for security and commercial reasons. Locating the mobile phone leads to locating people. This is done by using the most common propagation models in the mobile phone network design to calculate the distance between the mobile phone and the base station, in addition to using positioning algorithms to predict the location of the mobile station. In this work, three telecommunication towers that provide mobile phone service for Zain Iraq were selected, located within the Mahmudiya area in Baghdad as a case study, and a test drive was conducted to measure the signal strength received from these base stations at more than 10 points located within the coverage area of these base stations. The Okumura-HATA model, and the UMTS propagation model were used to calculate the distances. The Gray-Wolf algorithm was used to improve mobile phone position prediction.

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“…Clearly, this antenna needs switching elements that can link/dislink the stubs as intended. PIN diodes are widely used as switching elements in reconfigurable antennas [17], [18]. In this design, six HPND-4005 PIN diodes [19] are inserted to select its mode of operation.…”

Section: Configurationmentioning

confidence: 99%

A single port frequency reconfigurable antenna for underlay/interweave cognitive radio

Abdullah

Sallomi

Jassim

2022

IJEECS

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<span>A frequency reconfigurable antenna is presented in this paper as a novel single port system gathering the functionalities of both underlay and interweave cognitive radio. This 25×30×0.8 mm<sup>3</sup> system involves a wide slot antenna to cover the ultra wide band (UWB) range with resonating stubs that are used to prohibit/work-only-in specific bands within the UWB frequencies. Here, six positive intrinsic negative (PIN) diodes are used to decide the active sections of the antenna that leads to select its operation as UWB/filtering/multiband antenna. Diodes' configuration results in eight useful operation modes that include a scanning mode, four single band-notch modes and three dual band communication modes. The scanning mode covers the entire UWB range while one of the bands allocated for WiMax, Cband, WLAN or Xband is to be excluded in each of the band-notch modes. On the other hand, each communaication mode is able to work in one of the ranges that cover WiMax/Cband, Cband/WLAN or Xband/international telecommunication union (ITU). S11, realized gain, voltage standing wave ratio (VSWR) outcomes of this design that is simulated by computer simulation technology (CST) v.10 all confirms the proposed system's ability to work in the intended modes. Its novelity to work as interweave/underlay cognitive radio system, highly candidates this design to address many of the UWB communication issues related interference and multiband operation</span>

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A beamforming comparative study of least mean square, genetic algorithm and grey wolf optimization algorithms for multipath smart antenna system

Cited by 6 publications

References 17 publications

Synthesis of Wideband Thinned Eisenstein Fractile Antenna Arrays With Adaptive Beamforming Capability and Reduced Side-Lobes

Synthesis of Wideband Thinned Eisenstein Fractile Antenna Arrays With Adaptive Beamforming Capability and Reduced Side-Lobes

Improving Mobile Location Prediction Using the Grey Wolf Optimization Algorithm

A single port frequency reconfigurable antenna for underlay/interweave cognitive radio

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