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All Journal International Journal of Electrical and Computer Engineering TEKNIK TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Teknologi JTET (Jurnal Teknik Elektro Terapan) TELE, Journal of Applied Communication and Information Technologies Proceeding of the Electrical Engineering Computer Science and Informatics Journal of Applied Information, Communication and Technology (JAICT) JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Indonesian Journal of Electrical Engineering and Computer Science Journal of Electrical, Electronic, Information, and Communication Technology (JEEICT) International Journal of Robotics and Control Systems Buletin Agroteknologi Jurnal PkM (Pengabdian kepada Masyarakat) Jurnal Abdi Masyarakat Indonesia Journal of Fuzzy Systems and Control (JFSC)

Subuh Pramono

Department Of Electrical Engineering Universitas Sebelas Maret

Author-ID : 344509

Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Public Health Social Sciences Other

Published : 29 Documents Claim Missing Document

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Articles

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Performance of Groundplane Shaping in Four-Element Dualband MIMO Antenna Subuh Pramono; Tommi Hariyadi; Budi Basuki Subagio
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 15, No 1: March 2017
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v15i1.5002

This work presents performance of groundplane shaping and its effect in four element dualband multiple input multiple output (MIMO) antenna. This proposed four element dualband MIMO antenna consists of four bowtie dipole antenna which operates at 1800 MHz (low frequency) and 2300 MHz (high frequency). This proposed four element dualband MIMO antenna occupies a 270 x 210 x 100 mm3 of FR 4 substrate. We use four types of groundplane pattern i.e. full groundplane, cornered spatial groundplane,crossed middle groundplane, and spiral groundplane. These various grounplane patterns influence the performance of main parameters of dualband MIMO antenna. Cornered spatial groundplane pattern yields a largest bandwidth (VSWR ≤ 2) 282 MHz or 15.24% of center frequency at low frequency. Full groundplane pattern creates 135.2 MHz at high frequency. In addition, cornered spatial groundplane pattern also generates a lowest VSWR that is valued 1.21 at both low frequency and high frequency. The S parameters, basically both cornered spatial and full groundplane pattern produce a better return loss than two others. All four groundplane patterns deliver equally a mutual coupling parameter.The last, this proposed four element dualband MIMO with various groundplane patterns gives a good farfield properties i.e. gain, radiation pattern, H-E field.

Performance of Channel Estimation in MIMO-OFDM Systems Subuh Pramono; Eddy Triyono
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 11, No 2: June 2013
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v11i2.937

This paper presented the performance of faded channel estimation method on orthogonal frequency division multiplexing-multiple input multiple outputs (OFDM-MIMO) i.e. least squares (LS) and minimum mean squared error (MMSE). Channel impuls response (CIR) was required to overcome the intersymbol interference (ISI). Channel impuls response information was obtained from channel estimation processing. Iterance simulation used monte-carlo technique to determine the performance of bit error rate (BER) and mean squared error (MSE). Simulation results show that the mean squared error performance on MIMO system was better than the SISO system. On MMSE channel estimation, the MIMO 2Tx-2Rx system provided ± 2 dB improvement that compared to SISO system at value of MSE 10-2.Furthermore,MIMO 3Tx-2Rx produce improvement about 1.5 dB, MIMO 4Tx-2Rx improve about 3.5 dB at BER 10-4,respectively.The MIMO 2Tx-2Rx system, MMSE channel estimation produced better performance ± 1 dB than LS channel estimation with sufficient SNR value for MSE 10-2 .Pilot arrangement, the simulation results show that the block type-pilot arrangement produced better performance than the comb type-pilot arrangement at fast fading channel. Block type-pilot arrangement system produced better ± 10 dB than the comb type-pilot arrangement with MMSE method at value of BER 2 10-2.

Comparative Performance Analysis of Linear Precoding in Downlink Multi-user MIMO Subuh Pramono; Eddy Triyono
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 5: EECSI 2018
Publisher : IAES Indonesia Section

This paper investigates the comparative performance of linear precoding schemes. The linear precoding schemes are including block diagonalization (BD), zero forcing (ZF), and maximum ratio transmission (MRT) in downlink multi-user MIMO. This work delivers the performance of linear precoding in term of achievable sum rate and bit error rate (BER) with a variation of the signal to noise ratio (SNR) and the number of transmitter-receiver antennas. We suppose that the transmitters have a complete channel state information. The results show that the MRT precoding yields better bit error rate than both the BD and ZF precoding schemes. However, the ZF precoding generates better achievable sum rate than the MRT precoding. In the other side, the MRT precoding also outperforms when the number of active users is bigger than Kcross while the number of active users is less than Kcross the ZF precoding is still dominant.

Performance Analysis of SM-MISO with Q-CSIT in Wireless Sensor Network Subuh Pramono; Muhammad Ibrahim; Feri Adriyanto; Alfin Hikmaturokhman
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 6: EECSI 2019
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eecsi.v6.1986

In this paper, we investigate the role of Q-CSIT in SM-MISO for wireless sensor networks system. The SN are connected to the CH, it is modeled as a MISO system. Spatial modulation has an advantage over a conventional MIMO system which does not require multiple radio frequency chains as many as the number of transmit antennas. The Q-CSIT is aimed to estimate the faded wireless channel with a limited/finite number of bits. The finite number of feedback bits trigger the SN adapt automatically its AMC modes. Adaptation of the AMC modes causes a changing of transmit power and transmission rate, these changes will make a better probability of error. The numerical results show that bigger the number of feedback bits yields better SER. Furthermore, lower spatial correlation generates a better probability of error. The last, quality of wireless channel that is stated in SNR also dominantly influences the performance of SM – MISO system.

SISTEM PROTEKSI OVER CURRENT RELAY MOTOR FORCED DRAFT FAN PADA PEMBANGKIT LISTRIK TENAGA UAP Aulia Vici Yunitasari; Subuh Pramono
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.55-62

side the power plant uses an electric motor as equipment to convert electrical energy into mechanical, which uses a 3 phase motor. The Steam Power Plant has FDFan which functions as a device that supplies or forces outside air into the boiler combustion chamber. If the power plant operates, there will certainly be many disruptions which will occur due to several factors. Each motor has its own protection system. Especially on the FDfan 3A motor at the PLTU has several protection systems, including Over Current Relay as protection from overcurrent resulting in short circuit current, then Overload Relay as overload protection. In this report, mathematically analyzing calculations and comparing to determine the starting motor current and pick up current in the relay when under normal conditions or in trip conditions. At the power plant unit 3 FDFan motor with a power of 1722 kW produces a starting motor current of 118 A at the test value and the value of the mathematical calculation of 108.86 A. While the overcurrent relay with a pick up value of 4 A and the value of the mathematical calculation of 4.08 A which can be said to be still relatively normal and in good condition. Overcurrent protection relay is needed on the FDFan motor to prevent overcurrent, it is necessary to adjust the current according to the nameplate so that the motor is working optimally.

Nutrient Uptake, Partitioning, and Production of Two Subspecies of Brassica using Different Solution Concentrates in Floating Hydroponics Systems Mercy Bientri Yunindanova; Subuh Pramono; Muhammad Hamka Ibrahim
Buletin Agroteknologi Vol 1 No 2 (2020): December
Publisher : Universitas Prof. Dr. Hazairin SH

In this study, we investigated nutrient uptake, partitioning, and production of two subspecies of Brassica in response to nutrient solution concentration in floating hydroponics systems. This study used a complete randomized block design factorial with two factors. The first factor was two Brassica subspecies consisting of Brassica rapa subsp. chinensis (Pak Choi) and Brassica rapa var. parachinensis (Choy Sum). The second factor was the concentration level consisting electrical conductivity (EC) 1 mS cm-1 and EC 2 mS cm-1. The results indicated the absorption rates of nitrogen (N,) phosphorus (P), and potassium (K) in leaves, roots and stems were similar in both nutrient concentrations. In general, all combination treatments resulted more accumulation of P followed by N, also K as the smallest proportion. P was mostly accumulated at the root and leaves (19.60 to 25.90 mg g-1), while majority of N was collected in leaves ranging from 18.00 to 24.30 mg g-1. The highest K content was detected in the stem (10.70 to 14.20 mg g-1). P uptake was 1.69 to 2.47 times higher than K, while N uptake was 1.44 to 2.04 times higher than K. Both two subspecies and concentrations performed no significant effects on nutrient uptake. Although same species, the plant growth parameters of Pak Choi and Choy Sum are very different including plant height, leaves number, width and length. Both two subspecies adapted well with both concentrations. However, significant differences were recorded in the combination of subspecies and nutrient concentration on plant growth and production parameters. To achieve higher market portion, Pak Choi would be more suitable to be planted on EC 1 mS cm-1, while Choy Sum was favorable at both concentrations.

An Analysis of Quality of Service (QoS) In Live Video Streaming Using Evolved HSPA Network Media Achmad Zakaria Azhar; Subuh Pramono; Eko Supriyanto
JAICT Vol 1, No 1 (2016)
Publisher : Politeknik Negeri Semarang

Evolved High Speed Packet Access (HSPA+) is a mobile telecommunication system technology and the evolution of HSPA technology. This technology has a packet data based service with downlink speeds up to 21.1 Mbps and uplink speed up to 11.5 Mbps on the bandwidth 5MHz. This technology is expected to fulfill and support the needs for information that involves all aspects of multimedia such as video and audio, especially live video streaming. By utilizing this technology it will facilitate communicating the information, for example to monitoring the situation of the house, the news coverage at some certain area, and other events in real time. This thesis aims to identify and test the Quality of Service (QoS) performance on the network that is used for live video streaming with the parameters of throughput, delay, jitter and packet loss. The software used for monitoring the data traffic of the live video streaming network is wireshark network analyzer. From the test results it is obtained that the average throughput of provider B is 5,295 Kbps bigger than the provider A, the average delay of provider B is 0.618 ms smaller than the provider A, the average jitter of provider B is 0.420 ms smaller than the provider A and the average packet loss of provider B is 0.451% smaller than the provider A.

Implementasi dan Edukasi Sistem Keamanan Elektronik di Rumah Ibadah Dukuh Pingit dan Gunturan Karanganyar Faisal Rahutomo; Sutrisno Sutrisno; Subuh Pramono; Meiyanto Eko Sulistyo; Muhammad Hamka Ibrahim; Febri Liantoni
Jurnal Abdi Masyarakat Indonesia Vol 1 No 2 (2021): JAMSI - November 2021
Publisher : CV Firmos

Situasi sosial dan keamanan masyarakat masa kini terkadang muncul masalah terkait keyakinan agama. Berita-berita tentang penyerangan terhadap imam di masjid, pencurian kotak amal, pencurian alat pengeras suara, upaya pembakaran, vandalisme, hingga terorisme muncul. Pengamanan rumah ibadah secara ketat selama 24 jam memerlukan petugas keamanan yang menyedot anggaran rumah ibadah. Seringkali pengurusan rumah ibadah dilakukan secara sukarela sehingga tidak bisa dikontrol 24 jam terus-menerus oleh petugas masjid. Di sisi lainnya teknologi pengamanan secara elektronik telah tersedia dan dimanfaatkan secara luas di masyarakat. Untuk mengatasi celah yang ada ini, rumah ibadah di masa sekarang perlu memanfaatkan sistem keamanan elektronik. Untuk itu di dalam usulan ini diajukan judul implementasi dan edukasi sistem keamanan elektronik di rumah ibadah. Penyediaan perangkat dan pelatihan operasional diberikan pada beberapa rumah ibadah mitra. Berdasarkan pengukuran umpan balik kuesioner, hasilnya dirasakan positif oleh masyarakat. Dengan demikian aktivitas yang tidak selayaknya dilakukan dapat dipersempit ruang geraknya.

Handover Analysis of Data and VoIP Services in 802.11b/g/n Wireless LAN Imam Prasetyo; Muhammad Anif; Ari Sriyanto Nugroho; Subuh Pramono; Sarono Widodo; Sidiq S. Hidayat
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 11: November 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v12.i11.pp7832-7844

IEEE 802.11b/g/n WLAN with conventional ESS infrastructure doesn’t support handover feature. Handover feature allows user to migrate services between APs without losing connection. Handoff latency is one problem in WLAN to perform real-time application such as VoIP. To bring seamless handover and QoS guarantee in ESS network, we propose five network optimization methods i.e.configuring overlapping area of APs, placing APs in one roaming domain, using the same SSID and security mode, choosing APs channel by margin of 5, and configuring APs as DHCP forwarder. Handover test is done by sniffing on the client that experienced handover. In the result, there are three steps in Layer 2 handoff, i.e. probing, authentication, and re-association with maximum handoff latency is 325.02 ms in data services and 67.412 ms in VoIP. In VoIP services, one way delay is 39.985 - 49.18 ms, one way jitter is 9.45 - 19.57 ms, and the packet loss is 0 - 0.548%. Overall, the built network system is able to guarantee QoS in handover case, both in data and VoIP services.

Pengaruh Jumlah Slot pada Permanent Magnet Synchronous Generator (PMSG) Terhadap Nilai Back EMF dan KE yang Berbasis Finite Element Method (FEM) Slash Arthur Edi Sumawang; subuh Pramono
TEKNIK In Press
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v43i2.44519

A generator can produce electricity with three required conditions: a magnetic field, a coil, and a change in flux passing through the coil. The place to put the coil on the generator is called a slot. The number of slots can affect the characteristics of the generator. Changing the number of slots affects Back EMF and KE with a fixed generator geometry dimension. The simulation uses coiled wire with a diameter of 1 mm. In this research, PMSG 12s10p was designed, and the slots were varied into 15s10p and 24s10p. The PMSG 12s10p has 12 slots with 188 coils, the 15s10p has 15 slots with 158 coils, and the 24s10p has 24 slots with 79 coils. The simulation results show that the average DC voltage on PMSG 12s10p, 15s10p and 24s10p is 256,138 V, 277,340 V and 198,299 V, respectively. Electrical constant (KE), the KE value for each PMSG variation is 2.53 (PMSG 12s10p), 2.64 (PMSG 15s10p) and 1.89 (PMSG 24s10p). The simulation results show that PMSG 15s10p produces the largest back EMF and KE values.

Co-Authors Achmad Zakaria Azhar Adriyanto, Feri Alfin Hikmaturokhman Annisa Larasati Febrianingrum Anwar, Miftahul Ari Sriyanto Nugroho Ariansyah, Ahmad Aulia Vici Yunitasari Buchari, Erlin Herlina Budi Basuki S. Budi Basuki Subagio, Budi Basuki Eddy Triyono Eko Supriyanto Endro Wasito, Endro Eni Dwi Wardihani, Eni Dwi Fahmizal Faisal Rahutomo Febri Liantoni Febri Liantoni Feri Adriyanto Feri Adriyanto Firmansyah, Ardi Hanurjaya, Stephanus Hari Maghfiroh Ibrahim, Muhammad Ibrahim, Muhammad Hamka Imam Prasetyo Irwan Irwan Isnaeni, Novita Ayu Iswanti, Iswanti Joko Haryono Joko Slamet Saputro Kaban, Esra Andio Meiyanto Eko Sulistyo Meiyanto Eko Sulistyo Meiyanto Eko Sulistyo Meiyanto Eko Sulistyo Mercy Bientri Yunindanova Muhammad Anif Muhammad Hamka Ibrahim Muhammad Hamka Ibrahim Muhammad Hamka Ibrahim Muhammad Hamka Ibrahim Muhammad Hamka Ibrahim Muhammad Ibrahim Muhammad Renaldy Darmawan Prasetyo Adi Wibowo, Prasetyo Adi Ramelan, Agus Rauyani, Ahmad Imam Safiudin, Adip Sarono Widodo, Sarono Sidiq S. Hidayat Sidiq Syamsul Hidayat, Sidiq Syamsul Slash Arthur Edi Sumawang Sri Anggraeni Sri Anggraeni Kadiran, Sri Anggraeni Surya Aji Argawadana, Surya Aji Sutrisno . Sutrisno Sutrisno Sutrisno Sutrisno Sutrisno Sutrisno Taufiq Yulianto Tommi Hariyadi, Tommi Wardihani, Eni D. Yanu Kharisma, Daffa

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