Mitigasi Interferensi Virtual Small Cell Menggunakan Power Domain Non-Orthogonal Multiple Access

Djojonegoro, Muhammad Rizki Airlangga (2025) Mitigasi Interferensi Virtual Small Cell Menggunakan Power Domain Non-Orthogonal Multiple Access. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam era digital, kebutuhan akan kapasitas data yang lebih tinggi dan layanan jaringan yang lebih baik terus meningkat, dengan proyeksi jumlah pelanggan 5G mencapai 5,3 miliar pada tahun 2029. Untuk menjawab tantangan berupa efisiensi spektrum dan interferensi dalam jaringan seluler yang padat, base station heterogen telah diperkenalkan untuk meningkatkan kapasitas melalui reuse frekuensi. Namun, pendekatan ini menimbulkan masalah baru, seperti interferensi intra-tier dan antar-tier, serta tingginya biaya infrastruktur dan operasional. Sebagai alternatif, Non-Orthogonal Multiple Access (NOMA) menawarkan solusi efisien dengan memungkinkan beberapa pengguna berbagi sumber daya secara bersamaan melalui alokasi daya berbasis kanal. Teknologi ini menjadi lebih efektif ketika dikombinasikan dengan Virtual Small Cell (VSC) yang menggunakan beamforming berbasis phased array antennas untuk menekan biaya dan meningkatkan fleksibilitas. Penelitian ini menggunakan simulasi berbasis MATLAB untuk memodelkan distribusi pengguna, merancang kluster VSC, dan mengevaluasi performansi jaringan. Parameter seperti kapasitas total, throughput total, efisiensi spektrum, dan efisiensi energi diukur menggunakan pendekatan geometri stokastik. Hasilnya menunjukkan bahwa NOMA memberikan peningkatan signifikan dibandingkan OMA, dengan peningkatan kapasitas total dan efisiensi spektrum hingga 32%. Teknik Successive Interference Cancellation (SIC) dalam NOMA efektif dalam memitigasi interferensi antar pengguna, sementara beamforming VSC meningkatkan kualitas sinyal dengan memfokuskan daya pada area padat pengguna. Dengan kemampuan ini, NOMA yang didukung VSC menjadi teknologi yang menjanjikan untuk menghadapi tantangan jaringan masa depan, memberikan solusi efisien untuk kebutuhan kapasitas tinggi dan layanan yang optimal.
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In the digital era, the demand for higher data capacity and better network services continues to grow, with the number of 5G subscribers projected to reach 5.3 billion by 2029. To address challenges such as spectral efficiency and interference in increasingly dense cellular networks, heterogeneous base stations have been introduced to enhance capacity through frequency reuse. However, this approach introduces new challenges, including intra-tier and inter-tier interference as well as high infrastructure and operational costs. As an alternative, Non-Orthogonal Multiple Access (NOMA) offers an efficient solution by enabling multiple users to share resources simultaneously through channel-based power allocation. This technology becomes even more effective when combined with Virtual Small Cells (VSC) employing phased array antenna-based beamforming to reduce costs and enhance flexibility. This study utilizes MATLAB-based simulations to model user distribution, design VSC clusters, and evaluate network performance. Parameters such as total capacity, total throughput, spectral efficiency, and energy efficiency were measured using a stochastic geometry approach. The results demonstrate that NOMA significantly outperforms OMA, achieving up to a 32% increase in total capacity and spectral efficiency. The Successive Interference Cancellation (SIC) technique in NOMA effectively mitigates user-to-user interference, while VSC beamforming enhances signal quality by focusing power on high-density user areas. With these capabilities, NOMA supported by VSC emerges as a promising technology to tackle future network challenges, providing efficient solutions for high-capacity demands and optimal service delivery.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Beamforming, Efisiensi spektrum, Mitigasi Interferensi, NOMA, VSC, Interference Mitigation, Spectral Efficiency
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5103.2 Wireless communication systems. Two way wireless communication
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Rizki Airlangga Djojonegoro
Date Deposited:	22 Jan 2025 06:26
Last Modified:	22 Jan 2025 06:28
URI:	http://repository.its.ac.id/id/eprint/116565

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