Enhanced single-shot beam-training using true-time-delay units for mmwave hybrid arrays / by Mohamed Waeel Hamdy ; Supervisors Prof. Ahmed Hesham Mehana, Dr. Mohammed Ahmed Abdelghany.

By:

Mohamed Waeel Hamdy [preparation.]

Contributor(s):

Material type: Text

TextLanguage: English Summary language: English, Arabic Producer: 2023Description: 67 pages : illustrations ; 30 cm. + CDContent type:

text

Media type:

Unmediated

Carrier type:

volume

Other title:

طريقة محسنة لتدريب الحزمة من مرة واحدة باستخدام أجهزة تأخير الوقت الحقيقية للمصفوفات الهوائية الهجينة لنظم الموجات الميلليمترية [Added title page title]

Subject(s):

DDC classification:

621.382

Available additional physical forms:

Issues also as CD.

Dissertation note: Thesis (M.Sc)-Cairo University, 2023. Summary: Massive arrays are used in millimeter wave channels to compensate for the severe propa- gation path loss. One of the common challenges, that is a by-product of massive arrays, is the beam steering and selection. In this work, we use true-time-delay to minimize the beam training overhead associated with large number of antennas in millimeter wave. We propose an angle-of-arrival estimation algorithm that leverages the degrees of freedom introduced by hybrid beamforming system and thus, allows for single-shot, i.e., single-pilot, estimation process with good performance. The proposed algorithm improves the 5th percentile beamforming gain compared to the existing single-shot algorithms. Our simulations show that the proposed algorithm enhances the receiver’s sensitivity by 3 dB when using hybrid arrays. We show that at relatively fair signal-to-noise ratios, the num- ber of analog-to-digital converters at the receiver side can be decreased without significant performance loss, thus saving power and area

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Holdings
Item type	Current library	Home library	Call number	Status	Barcode
Thesis	قاعة الرسائل الجامعية - الدور الاول	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.13.08.M.Sc.2024.Mo.E (Browse shelf(Opens below))	Not for loan	01010110090800000

Thesis (M.Sc)-Cairo University, 2023.

Bibliography: pages 65-67.

Massive arrays are used in millimeter wave channels to compensate for the severe propa- gation path loss. One of the common challenges, that is a by-product of massive arrays, is the beam steering and selection. In this work, we use true-time-delay to minimize the beam training overhead associated with large number of antennas in millimeter wave.
We propose an angle-of-arrival estimation algorithm that leverages the degrees of freedom introduced by hybrid beamforming system and thus, allows for single-shot, i.e., single-pilot, estimation process with good performance. The proposed algorithm improves the 5th percentile beamforming gain compared to the existing single-shot algorithms. Our simulations show that the proposed algorithm enhances the receiver’s sensitivity by 3 dB when using hybrid arrays. We show that at relatively fair signal-to-noise ratios, the num- ber of analog-to-digital converters at the receiver side can be decreased without significant performance loss, thus saving power and area

Issues also as CD.

Text in English and abstract in Arabic & English.

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