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Multipath Effects in Building Environment Toward Bandwidth Enhancement for Mobile Communication of 47 GHz Frequency Andrita Ceriana Eska
JURNAL INFOTEL Vol 10 No 1 (2018): February 2018
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v10i1.353

Abstract

This paper focused at communication system with multipath effects at building environment. The frequency that used for the communication system was 47 GHz. That frequency possibly used for higher bandwidth at communication system. The condition of communication propagation that used was downlink direction. Mobile station placed at track or street with buildings environment condition. This research analysis was based on transmitter power variation, bandwidth variation, and modulation threshold variation. That analysis produced signal to noise ratio value that was obtained from bandwidth variation and transmitter power variation. The transmitter power variation that used was consists of 0.01 Watt, 0.1 Watt, and 1 Watt. Threshold variations for communication modulation that used was consist of 16 QAM and 64 QAM. As the result such as bandwidth variation showed widened of bandwidth then more decreasing of signal to noise ration value, and more increasing of transmitter power then also more increase of signal to noise ratio value
Propagation of Mobile Communication with Tree Obstacle used OFDM-QAM at 10 GHz Andrita Ceriana Eska
JURNAL INFOTEL Vol 11 No 3 (2019): August 2019
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v11i3.439

Abstract

This research focused about mobile communication systems at line communication of road. Frequency communication was used 10 GHz. The tree was obstacle at every node of line communication. That communication was modeled with single diffraction. Single knife edge was used for that diffraction model. The communication transmission that used was Orthogonal Frequency Division Multiplexing. The modulation variation that used was consisted of 16 QAM and 64 QAM. Analysis that used was consisted of modulation variation, transmitter power variation, and coverage area variation. The result showed that SNR was decreased when transmitter power was increased, the value BER 64 QAM lower than BER 16 QAM, and percentage of coverage area that obtained was around 96%.
The Communication System of Building from Outdoor to Indoor with AMC at 10 GHz Andrita Ceriana Eska
JURNAL INFOTEL Vol 12 No 1 (2020): February 2020
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v12i1.465

Abstract

The propagation model of communication systems was used propagation from outdoor to indoor of building. In the inside that building used partition with brick. That propagation condition used downlink condition from mobile station side. The communication frequency used 10 GHz. Some parameter variation was used in this research such as radio base station coverage, mobile station location of building, and code rate communication. The coverage variation of radio base station used femtocell and picocell. As the result described signal to noise ratio (SNR)at every node communication, adaptive modulation and coding (AMC) variation, and coverage area percentage in the building. The modulation and coding scheme (MCS) was used consist of QPSK, 16 QAM, and 64 QAM
Doppler Shift Effect at The Communication Systems with 10 GHz around Building Andrita Ceriana Eska
JURNAL INFOTEL Vol 12 No 4 (2020): November 2020
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v12i4.483

Abstract

This research described the Doppler shift effect for the communication systems. The mobile station moves with various velocities around the building’s environment. Doppler’s shift influences the communication systems. The frequency communication was used 10 GHz and its influenced by atmospheric attenuation. This research consisted of propagation with LOS and NLOS conditions, mobile station velocity variation, height buildings variation, and transmitter power variation. This research described frequency maximum at Doppler shift, coherence time, and signal to noise ratio. More increase Doppler shift of coherence time caused signal noise ratio to decrease.
Cellular Communication Propagation at Drone around Building Environment with Single Knife Edge at 10 GHz Andrita Ceriana Eska
JURNAL INFOTEL Vol 13 No 1 (2021): February 2021
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v13i1.541

Abstract

The drone communication systems used a cellular network for controlling a drone from a long distance. That communication propagations between drone and base station were analyzed. The drone moved at the track around building environment. That environment used variations in building height. The communication propagation around building environment caused diffraction mechanism. Single knife edge method is used for that diffraction mechanism. The frequency of communication used 10 GHz. That frequency was influenced by atmospheric attenuation. This research was using some variations such as height of drone track location, transmitter power, and AMC (Adaptive Modulation Coding). MCS (Modulation Coding Scheme) was used AMC such as QPSK, 16 QAM, and 64 QAM. Some result was obtained at this research consist of LOS and NLOS distance, SNR, MCS probability, and percentage of drone coverage. NLOS propagation was caused by building height. The SNR value become increase when higher at drone position, such as drone was moving at 20 meters with height of flying drone 80 m and transmitter power 30 dBm obtained SNR 38.21 dBm. That SNR is affected AMC, so a higher SNR value increases AMC. The drone’s coverage 100%, with a height of flying drone 80 meters and transmitter power of 30 dBm. That condition showed more increasing coverage percentage than 64.8% for height of flying drone 20 meters and transmitter power 30 dBm. That result showed that more drone height increased of coverage percentage, probability modulation, and SNR value.
Receiver diversity with selection combining for drone communication around buildings at frequency 10 GHz Andrita Ceriana Eska
JURNAL INFOTEL Vol 14 No 2 (2022): May 2022
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v14i2.754

Abstract

The communication network for cellular network keep development. This research analyzed about cellular network was used drone network. The mobile drone used frequency at 10 GHz for communication. The mobile drone moved around buildings. Buildings were used high variation. Base Station placed around building. This research was using macro diversity Base Station, variation building, variation modulation, and variation height of drone trajectory. Macro diversity mechanism used for that two Base Station. Selection Combining (SC) method was used for that macro diversity mechanism. The modulation communication based from Adaptive Modulation and Coding (AMC). Adaptive Modulation and Coding (AMC) was used Modulation and coding scheme (MCS). Modulation was used QPSK, 16 QAM, and 64 QAM. As the result described signal to noise ratio (SNR) at every node communication, probability MCS, and percentage coverage of drone trajectory. MCS probability for 64 QAM become increased with selection combining method. The percentages coverage of drone trajectory was obtained 77.2% of the first BS, 66.8% of the second BS, and 87.2% with SC method.
Pengendali Wireless Mobile Robot Arm (WMRA) Berdasarkan Gestur Lengan Menggunakan Sensor Accelerometer dan Logika Fuzzy Widya Cahyadi; Ali Rizal Chaidir; Azmy Akhyar Al Insani; Khairul Anam; Andrita Ceriana Eska
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 13, No 2 (2023): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijeis.77125

Abstract

Telerobotik adalah sistem pengendali robot dalam jarak jauh yang membutuhkan campur tangan manusia sebagai operator (Human-in-the-Loop). Pada penelitian sebelumnya, mobile robot manipulator dikendalikan berdasarkan gestur jari operator melalui image processing menggunakan metode template matching dengan komunikasi melalui kabel. Sehingga pada penelitian selanjutnya, dibuat sistem kendali robot berdasarkan gestur lengan menggunakan sensor accelerometer dan logika fuzzy dengan komunikasi nirkabel melalui jaringan internet. Robot yang dikendalikan terdiri dari robot arm 2 dof dan robot non-holonomic dengan 4 roda. Sistem kendali robot terdiri dari 2 sensor accelerometer yang terpasang pada lengan operator. Juga terdapat sensor hall-effect sebagai kendali gerak gripper. Metode fuzzy sugeno diterapkan pada sistem kendali gerak mobile robot agar didapatkan respon robot yang dapat bergerak secara bebas berdasarkan gestur lengan operator. Berdasarkan analisa dan data pengujian didapatkan hasil bahwa robot dapat dikendalikan dengan cukup baik.
AMC pada UE Frekuensi 10 GHz melewati HetNet Microcell dan Femtocell menggunakan Metode SKE pada Lingkungan Bergedung Eska, Andrita Ceriana
Jurnal Arus Elektro Indonesia Vol 9 No 2 (2023)
Publisher : Fakultas Teknik, Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jaei.v9i2.41369

Abstract

Sistem komunikasi bergerak berupa user equipment (UE) bergerak pada lintasan lurus diantara lingkungan bergedung. Mekanisme difraksi karena pengaruh lingkungan bergedung yang dimodelkan menggunakan Single Knife Edge (SKE). Frekuensi komunikasi yang digunakan 10 GHz. Lintasan UE melewati HetNet (Heterogeneous Networks) yang terdiri dari microcell dan femtocell. Propagasi UE menggunakan kondisi uplink dengan kanal AWGN. Adaptive Modulation and Coding (AMC) yang menggunakan MCS (Modulation and Code Scheme). MCS tersebut terdiri dari QPSK, 16QAM, dan 64QAM. Sebagai hasil percentase cakupan pada penggunaan SC (Selection Combining) HetNet didapatkan sebanyak 94,03%, gNB1 microcell sebanyak 88,06%, dan gNB femtocell sebanyak 64,18%. Penggunaan selection combining HetNet dengan modulasi 64QAM sebanyak 67,16%, dan modulasi 64QAM dengan code rate 4/5 sebanyak 58,2%.
Antena Mikrostrip Rectangular Patch dengan DGS Bentuk Dumbbell untuk Teknologi 3.5GHz Setiabudi, Dodi; Ivanda, Dio Ferrel; Eska, Andrita Ceriana; Herdiyanto, Dedy Wahyu; Rahardi, Gamma Aditya
Jurnal Arus Elektro Indonesia Vol 10 No 2 (2024)
Publisher : Fakultas Teknik, Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jaei.v10i2.43474

Abstract

Seluruh dunia saat ini sedang mempersiapkan generasi kelima (5G). Teknologi packet switching nirkabel, sering dikenal sebagai 5G, menyediakan area jangkauan yang luas dan throughput yang tinggi. Karena teknologi ini dapat mengirim data dengan kecepatan lebih dari 100 Mbps, berbeda dengan generasi LTE/4G. Indonesia membutuhkan minimal tiga lapisan spektrum frekuensi: lapisan bawah 700 MHz (pita rendah), lapisan pita tengah 2,3 GHz dan 2,6 GHz, serta lapisan atas 3,5 GHz (pita tinggi). Penelitian ini menggunakan DGS berbentuk dumbbell dan antena mikrostrip patch persegi panjang dengan frekuensi operasi 3,5 GHz. Parameter berikut dilacak menggunakan CST Studio Suite sebagai alat simulasi desain pendukung: VSWR, return loss, bandwidth, gain, dan pola radiasi. Hasil penelitian menunjukkan bahwa antena beroperasi pada frekuensi 3,5GHz dengan nilai VSWR dan return loss yang memenuhi standar; secara spesifik antena mikrostrip tanpa metode Defected Ground Structure (DGS) mempunyai nilai VSWR sebesar 1,94 dan return loss sebesar - 9,85 dB. Struktur VSWR (DGS) sebesar 1,8 dan nilai return loss sebesar -10,85 dB sesuai kriteria perancangan, dimana nilai VSWR sebesar 2 dan nilai return loss sebesar -10 dB
Analisis Kualitas Jaringan 5g Pada Provider Xl Menggunakan Metode Drive Test Gunawan, Ekky Yonathan; Cahyadi, Widya; Eska, Andrita Ceriana; Herdiyanto, Dedy Wahyu; Laagu, M. Asnoer
Jurnal Arus Elektro Indonesia Vol 10 No 1 (2024)
Publisher : Fakultas Teknik, Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jaei.v10i1.42499

Abstract

Jaringan 5G atau generasi kelima merupakan sebuah perkembangan pada jaringan seluler dari generasi sebelumnya yaitu 4G. Jaringan 4G dipengaruhi oleh aktivitas masyarakat, sehingga diperlukan pengujian untuk mengetahui bagaimana pengaruh aktivitas masyarakat pada kualitas jaringan 5G. Salah satu metode yang dapat digunakan untuk mengetahui pengaruh aktivitas masyarakat pada kualitas jaringan adalah dengan metode drive test pada pengujian Quality of service. Berdasarkan pengambilan data didapatkan nilai jiter yang berada pada rentang 1 hingga 2 ms, untuk nilai loss pada ketiga lokasi berada diatas 3%, untuk nilai parameter delay ketiga lokasi masih sangat baik karena didominasi oleh nilai dibawah 150ms. Berdasarkan pengujian yang telah dilakukan diketahui bahwa jaringan 5G pada ketiga lokasi berada pada predikat baik hingga sangat baik karena memiliki nilai Quality of Service pada rentang 3 hingga 3,8 , selain itu lokasi yang memiliki nilai kualitas jarigan yang paling baik adalah Kelapa Gading karena memiliki nilai Quality of Service yang paling baik yaitu 3,8 atau 95%, selain itu kondosi lokasi seperti banyaknya orang yang berlalu-lalang mempengaruhi beberapa parameter seperti packet loss dan delay.