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All Journal ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Journal of Telecommunication, Electronics and Control Engineering (JTECE) Journal of Informatics and Communication Technology (JICT)
Wahyuningrum, Reni Dyah
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Mathematics

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Studies on the Use of Spectrum Sharing for Mobile Network Operator in Indonesia Hafiza, Lia; Wahyuningrum, Reni Dyah; Yudiansyah, Yudiansyah
Journal of Informatics and Communication Technology (JICT) Vol. 5 No. 1
Publisher : PPM Telkom University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52661/j_ict.v5i1.186

Abstract

Since telecom businesses have already reached their peak level of revenue, their future is expected to get worse. To save as much money as possible, greater than sixty percent of mobile network operators (MNO) in the worldwide implemented Radio Access Network-Sharing or RAN-Sharing. Earnings before interest, taxes, depreciation, and amortization (EBITDA) pressure and the limited availability of the frequency spectrum are two factors that propel. Spectrum sharing can be one solution to reduce Capital Expenditure and Operational Expenditure operator costs, address spectrum shortages and promote development across the region in Indonesia. With different coverage of underserved areas, the number of assets in the form of BTS and license of frequency spectrum usage are owned by each operator. Research on business impacts for operators needs to be assessed to be able to determine business strategy.
Model Kanal 5G dengan Pengaruh Kelembapan pada Frekuensi 3,3 GHz dan Bandwidth 99 MHz Berbasis Convolutional Codes WAHYUNINGRUM, RENI DYAH; NI’AMAH, KHOIRUN; LARASATI, SOLICHAH
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 9, No 4: Published October 2021
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v9i4.878

Abstract

ABSTRAKGenerasi telekomunikasi kelima (5G) diterapkan pada 2021 dengan frekuensi tinggi yang menyebabkan redaman yang besar dibandingkan pita sub-1 GHz. Penelitian ini mengkaji sistem 5G dengan frekuensi operasi 3,3 GHz dan bandwidth 99 MHz berdasarkan spesifikasi 5G dari Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) numerologi μ = 1 menggunakan parameter lingkungan yang diukur secara langsung di kota Bandung. Penelitian ini menemukan bahwa model kanal 5G dengan pengaruh kelembapan maksimum memiliki power delay profile (PDP) 9 path dengan nilai daya yang lebih kecil dan outage performances (𝑅>𝐶) yang lebih buruk dengan gap sebesar 0,3 dB dibandingkan dengan pengaruh kelembapan minimum. Hasil penelitian menunjukkan bahwa penggunaan convolutional codes dapat membantu menghemat Signal to Noise Ratio (SNR) dengan gap sebesar 3 dB. Hasil dari penelitian ini diharapkan dapat memberikan kontribusi bagi perkembangan komunikasi nirkabel 5G di Indonesia.Kata kunci: 5G, model kanal, convolutional codes, PDP, FER, BER. ABSTRACTThe fifth generation of telecommunications (5G) implemented in 2021, where high frequency which causes a large attenuation compared to the sub-1 GHz band. This research examines a 5G system with an operating frequency of 3.3 GHz and a bandwidth of 99 MHz based on the 5G specification of the Cyclic Prefix - Orthogonal Frequency Division Multiplexing (CP-OFDM) numerology μ = 1 using environmental parameters measured directly in Bandung, Indonesia. This research shows that the 5G channel model under maximum humidity has a 9 power delay profile (PDP) with a smaller power value and worse outage performances (𝑅>𝐶) with a gap of 0.3 dB compared to the effect of minimum humidity. The results showed that the use of convolutional codes can save the Signal to Noise Ratio (SNR) with gap of 3 dB. The results of this research are expected to contribute to the development of 5G wireless communications in Indonesia.Keywords: 5G, channel model, convolutional codes, PDP, FER, BER.
Analisis Kinerja Jaringan 5G dengan Pengkodean QC-LDPC dan Polar WAHYUNINGRUM, RENI DYAH; GINTING, MELINDA BR; NI’AMAH, KHOIRUN; LARASATI, SOLICHAH
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 1: Published January 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i1.190

Abstract

ABSTRAKJaringan 5G telah menjadi penanda penting dalam evolusi teknologi nirkabel yang menawarkan kecepatan dan kinerja yang luar biasa untuk memenuhi kebutuhan konektivitas yang semakin meningkat. Dalam jaringan 5G, pengkodean kanal merupakan elemen penting dalam memastikan pengiriman data yang handal dan efisien. Penelitian ini mengkaji sistem 5G pada frekuensi 26 GHz dan bandwidth  200 MHz menggunakan Orthogonal Frequency Division Multiplexing (OFDM) dengan ukuran Fast Fourier Transform (FFT) sebesar 256 dan modulasi Binary Phase Shift Keying (BPSK). Penelitian ini mengevaluasi perbandingan penambahan channel coding yaitu QC-LDPC dan polar codes. Performansi QC-LDPC codes pada BER sebesar 10-4 dapat dicapai dengan SNR 𝛾 = 17 𝑑𝐵 untuk kode QC-LDPC dan SNR 𝛾 = 15 𝑑𝐵 untuk polar codes. Hasil menunjukkan bahwa penambahan channel coding mampu menangkap diversity order kedua dan performansi polar codes lebih baik dibandingkan dengan QC-LDPC.Kata kunci: 5G, BPSK, OFDM, Polar, QC-LDPC ABSTRACTThe 5G network has become a significant milestone in the evolution of wireless technology, offering remarkable speed and performance to meet the growing demands of connectivity. In the 5G network, channel coding is a crucial element to ensure reliable and efficient data transmission. This research evaluate the 5G network operating at a frequency of 26 GHz and a bandwidth of 200 MHz, utilizing Orthogonal Frequency Division Multiplexing (OFDM) with an Fast Fourier Transform (FFT) size of 256 and Binary Phase Shift Keying (BPSK) modulation. The research evaluates the comparison of adding channel coding using QC-LDPC and polar codes. The performance of QC-LDPC codes at a bit error rate (BER) of 10-4 can be achieved with an SNR of 𝛾 = 17 𝑑𝐵 for QC-LDPC codes and an SNR of 𝛾 = 15 𝑑𝐵 for polar codes. The results shows the addition of channel coding is capable of capturing second-order diversity, and polar codes outperforms QC-LDPC in terms of performances.Keywords: 5G, BPSK, OFDM, Polar, QC-LDPC
Performance of LDPC Codes in Multipath OFDM System Wahyuningrum, Reni Dyah; Hafiza, Lia; Ni’amah, Khoirun; Larasati, Solichah; Udlhiya, Ida
Journal of Telecommunication Electronics and Control Engineering (JTECE) Vol 7 No 1 (2025): Journal of Telecommunication, Electronics, and Control Engineering (JTECE)
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v7i1.1653

Abstract

In fifth-generation wireless networks (5G), a significant challenge arises: delivering high-speed data transmission and extensive networking services while maintaining a low bit error rate (BER). To meet the demands of 5G services, Orthogonal Frequency Division Multiplexing (OFDM) emerges as a promising technique for ensuring high-quality communication and an FFT size of 256. Moreover, several channel coding methods have been employed to enhance BER performance. Among these methods, Quasi Cyclic- Low-Density Parity Check (QC-LDPC) has become the established standard for high-speed data transmission in 5G networks. However, implementing these coding methods in conjunction with 5G standard specifications presents various complexities and challenges. In this research, we analyze QC-LDPC in multipath fading using OFDM. The performance of QC-LDPC codes at a BER of 10-3 can be achieved with an SNR of 15 dB for OFDM with QC-LDPC codes and an SNR of 20 dB for OFDM. The inclusion of QC-LDPC coding in the OFDM system significantly improves performance by reducing the required SNR for a BER of 10-3 from 20 dB (uncoded) to 15 dB (coded), a 5 dB reduction. Channel coding with QC-LDPC also enhances system efficiency by consistently decreasing the BER across various SNR values. These results confirm that QC-LDPC coding provides better reliability and performance than the uncoded OFDM system.
Co-Authors Lia Hafiza Melinda Br Ginting NI’AMAH, KHOIRUN Ni’amah, Khoirun Solichah Larasati udlhiya, Ida Yudiansyah Yudiansyah