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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal technoscientia Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Pekommas Journal of Engineering and Technological Sciences Journal of ICT Research and Applications Maqasid: Jurnal Studi Hukum Islam JITTER (Jurnal Ilmiah Teknologi Informasi Terapan) Jurnal Sains Dirgantara TEKTRIKA - Jurnal Penelitian dan Pengembangan Telekomunikasi, Kendali, Komputer, Elektrik, dan Elektronika Adi Husada Nursing Journal JURNAL TEKNOLOGI TECHNOSCIENTIA These proceedings represent the work of researchers participating in The International Conference on Elementary Education (ICEE) which is being hosted by the Elementary Education Study Programme School of Postgraduate Studies, Universitas Pendidikan Makara Journal of Technology Buletin Pos dan Telekomunikasi
Adit Kurniawan
Institut Teknologi Bandung
Religion Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Public Health Social Sciences

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PENGUKURAN UNJUK KERJA MODULASI GMSK PADA SOFTWARE-DEFINED RADIO PLATFORM Eko Marpanaji; Bambang Riyanto; Armein Z.R. Langi; Adit Kurniawan
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 5, No 2: August 2007
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v5i2.1344

Abstract

This paper addresses performance measurement of Gaussian Minimum Shift Keying (GMSK) modulation which is implemented on Software-Defined Radio (SDR) platform using Universal Software Radio Peripheral (USRP) from GNU Radio. GMSK modulation is very popular and is adopted as GSM cellular phone modulation standard.  The results of this research can be used as basic concept in developing wireless communication system based on SDR technology which is needed in Next-Generation Networks (NGN). The GMSK performance is measured in terms of Packet Error Rate (PER) with several of Eb/No, bit rate, modulation frequency, payload size, and gain values. Based on this research, the lowest PER can be achieved by setting Eb/No value equal to 20 dB, optimum bit rate = 256 kbps, BT 0.25, optimum payload size = 4092 bytes, and optimum gain equal to 100.
Realization of a Second Harmonic Antenna for Rural Communications* Adit Kurniawan; Ahmad Hasyim; Yuyu Wahyu
Journal of Engineering and Technological Sciences Vol. 38 No. 2 (2006)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.eng.sci.2006.38.2.2

Abstract

In this research, an active antenna operated at the second harmonic frequency is investigated, and is implemented using microstrip antenna material. The antenna consists of a FET oscillator which plays as a fundamental frequency oscillator and a frequency multiplier, and a patch antenna resonated at the second harmonic frequency as the radiator. A maximum second-harmonic output power can be extracted when the load impedance of the oscillator is optimized both at the fundamental and at the second harmonic frequencies. A rectangular patch antenna is used to radiate the second harmonic output power from the oscillator. The patch impedance is matched resistively at the second harmonic frequency. The patch antenna is fabricated using Diclad 522 microstrip substrates (relative permitivity r = 2.5) with a dielectric thickness of 1.57 mm. A GaAs FET AT-8250 transistor is used as an oscillator and a frequency multiplier and acts as the active component. Fundamental frequency is designed at 2,4 GHz band, so that the second harmonic frequency operates at 4,8 GHz band. The frequency is chosen to facilitate and to extend the needs of communications in rural areas using the unlicensed Industrial Scientific, and Medical (ISM) band. Operating the communication infrastructures intended for the use at 2.4 GHz band at its second harmonic frequency, is intended to alleviate interference levels at 2.4 GHz.
Perancangan 1×6 Linear Array Antena Dipole Pada Frekuensi 38 GHZ Untuk 5G Smartphone Hikmah Adi Putra; Yusnita Rahayu; Adit Kurniawan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The 5G technology is the next phase of wireless network communication development. Adaptation of Multiple Input Multiple Output (MIMO) techniques into 5G technology is used to produce high data rate communication, low power consumption and bigger network capacity compared to 4G technology. Antenna design that can work on millimeter waves with high gain, better efficency and compact size antenna is needed for 5G mobile devices. This paper proposed the design of MIMO antenna for 5G smartphone application with gain>10 dBi and bandwidth>500 MHz. The proposed antenna is designed by RT Duroid 5880 substrate with the overall size of 44,8x4,4x078 mm3, consisting of 1x6 element linear array antenna. The proposed antenna yields bandwidth of 5,68 GHz at frequencies range 36.05 GHz to 41.74 GHz and 11.4 dBi of gain at 38 GHz frequency.Keyword: Antenna Smartphone, 5G, Beam steerable, MIMO.
Perancangan Antena Mikrostrip Mimo 5g Dalam Peningkatan Gain Untuk Aplikasi Base Station Muhammad Saiful Fadhil Reyhan; Yusnita Rahayu; Adit Kurniawan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The last decade has been enormous invasion of wireless device in the evolution of technology. The requirement of high throughput is needed to provide the quality of device such as audio, data, video, and games. However, the connected devices grown and increase critcially year by year. Multiple Input Multiple Output (MIMO) that has been embedded for 4G technologies as the one of technology is more likely adapted on 5G to improve the data peak rate for SNR(Signal-to-Noise Ratio). High gain and better efficency are needed for Base Station as transmit the power to receiver or connected device. MIMO can be confirmed as the solution to increase the gain with better effeciency. This paper proposed the design of MIMO antenna with high gain. The proposed antenna is designed RT Duroid 5880 substrate with the overall size of 136.5x40x0.127 mm3. The MIMO consist of 20 element antenna that achieved 26.4 dBi of gain at 38 GHz frequency and 22.2 dBi at 28GHz. Keyword: MIMO, 5G, High Gain, Base Station, Microstrip.
Perancangan Antena Mikrostrip Quasi-Yagi Untuk Aplikasi Wigig 60 GHZ Septyo Adi Pratama; Yusnita Rahayu; Adit Kurniawan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

WiGig (Wireless Gigabite) is the next generation technology of WiFi (Wireless Fidelity). WiGig speeds can reach 7Gbps / s and have great access. In this study, microstrip antenna Quasi-Yagi MIMO (Multiple Input Multiple Output) High gain for WiGig application operating at 60 GHz is discussed. Microstrip antenna is designed by using MIMO Technique to increase the gain. Antenna is simulated by using CST (Computer Simulation Technology) Microwave Studio software. From the simulation results, the antenna can operate at a frequency of 60 GHz. The bandwidth obtained is 3.75 GHz (5.79%) at VSWR 1.04 and the gain is 10.1 dB.Keyword: WiGig, MIMO, Gain, Bandwidth, VSWR
Franchise Cellular Operator in Rural Areas (Operator Seluler Model Franchise di Daerah Rural) Nurfadillah A. Parewe; Taufik Hasan; Adit Kurniawan
Jurnal Pekommas Vol 16, No 1 (2013): April 2013
Publisher : BBPSDMP KOMINFO MAKASSAR

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Abstract

The rapid development in telecommunication motivates organizations or business person to gain some profits in telco-based business. However, very limited Indonesian villagers had access to these technologies.  This problem was caused by the less attractive condition (even  unfeasible) to invest in the rural areas because the cost to build a conventional telecommunication infrastructure was very high, eventhough this was a potential new market. The other is the limitations of the spectrum allocated for new wireless access operator. This study formulated a new network cellular business model that met the rural needs, called franchise operator which is able to solve the problem of the frequency spectrum limitations, because new operators could make use of the frequency spectrum of the legal operators, though a new proposed business scheme, whereby the new operator does not require a new frequency allocation. However, the implementation of this franchising model is highly dependent on telecommunication regulation in Indonesia. So that further studies is needed regarding the regulation that will permit the creation of franchising operator. Open BTS technology as selected village cellular technology, requires an investment only of Rp 223 million to build telecommunication infrastructure in rural areas. This is much cheaper than to deploy a conventional infrastructure. Supported by franchise business model, operating cost could be decreased, making this model feasible to be implemented as a breakthrough of the telecommunication infrastructure development in rural areas.Perkembangan teknologi mendorong pelaku perdagangan beralih membentuk bisnis telekomunikasi dan berkompetisi dengan menawarkan berbagai produk telekomunikasi. Namun sangat disayangkan, 50,21% dari total penduduk Indonesia yang tinggal di pedesaan (Badan Pusat Statistik Indonesia, 2010) hampir tidak terjangkau akses telekomunikasi. Masalahnya adalah para operator merasa berat berinvestasi di pedesaan karena biaya pembangunan jaringan seluler konvensional yang sangat tinggi dan tidak sebanding dengan keuntungan yang diperoleh. Selain itu keterbatasan spektrum menjadi kendala bagi calon operator baru yang ingin mengambil peran. Guna mengatasi masalah tersebut, dihasilkan sebuah model operator berbasis kerjasama franchise yang disesuaikan dengan kebutuhan pedesaan. Operator model franchise yang dimaksud dapat memberi solusi keterbatasan spektrum frekuensi karena operator hanya perlu memanfaatkan spektrum frekuensi dari operator berlisensi sehingga tidak membutuhkan alokasi frekuensi yang baru. Namun pelaksanaan franchising ini sangat tergantung pada regulasi atau peraturan telekomunikasi yang berlaku di Indonesia. Sehingga diperlukan kajian lebih lanjut mengenai Undang-Undang maupun Peraturan Pemerintah yang dapat berdampak bagi franchising operator ini. Teknologi openBTS yang dipilih sebagai solusi teknologi seluler pedesaan hanya memerlukan biaya investasi sekitar Rp 223 juta untuk membangun satu site infrastruktur di daerah terpencil. Biaya investasi ini jauh lebih murah dibandingkan biaya pembangunan infrastruktur seluler konvensional. Didukung dengan model bisnis franchise yang akan mengurangi biaya operasional operator, maka desain ini dapat menjadi peluang bisnis baru bagi operator eksisting maupun untuk memberi dukungan dalam meningkatkan produktifitas dan efisiensi infrastruktur telekomunikasi dan informasi di pedesaan.   
Experimental Study of DQPSK Modulation on SDR Platform Eko Marpanaji; Bamba Riyanto Trilaksono; Armein Z. R. Langi; Adit Kurniawan; Andri Mahendra; Thay Liung
Journal of ICT Research and Applications Vol. 1 No. 2 (2007)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.2007.1.2.2

Abstract

This Paper addresses Differential Quadriphase Shift Keying (DQPSK) modulation implemented on SDR platform for the development of digital data  communications based on Software-Defined Radio (SDR). DQPSK modulation performance perceived at Packet Error Rate (PER) is evaluated in terms of Eb/No or S/N ratio, carrier frequency, bit rate, gain, roll-off factor of root Nyquist filter or root raised cosine filter, and payload size from delivered data. Based on these results, the smallest PER could be obtained by setting Eb/No value greater than 20 dB, carrier frequency of at least 0,3 MHz, optimum bit rate of 200 kbps, optimum range payload size of 2000 up to 4000 bytes, and roll-off factor of Nyquist or root-raised cosine filter of 0.4.
A Novel Multiple-Output DUSTF Coding on High Mobility MIMO-Wireless Communication Systems Rina Pudji Astuti; Andriyan B. Suksmono; Sugihartono Sugihartono; Adit Kurniawan
Journal of ICT Research and Applications Vol. 2 No. 2 (2008)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.2008.2.2.1

Abstract

In the future, wireless access system will operate in high data rate transmission and high mobility environment, to support private and public access. For such an environment, it is necessary to develop a system that has a higher spectrum efficiency and is able to mitigate selective fading problems. A novel multiple-output differential unitary space-time frequency (DUSTF) coding scheme is proposed to overcome those problems. The implementation of this inner coding scheme is unified with MIMO system, so that the scheme has a good spectrum efficiency. The differential space-time modulation in this proposed scheme is intended to operate in a non-coherent channel transmission scheme and to guarantee the system performance. In order to combat the selective fading problems, the multi-carrier space frequency scheme is utilized in the proposed scheme. In general, simulation result shows that the MIMO wireless system with the multiple-output DUSTF coding scheme in a non-coherent channel transmission scheme provides a good system performance. The proposed scheme can outperforms other previously published inner coding scheme for high mobility and high SNR. The system also achieves a good channel capacity.
A 2.3/3.3 GHz Dual Band Antenna Design for WiMax Applications Adit Kurniawan; Iskandar Iskandar; P.H. Mukti
Journal of ICT Research and Applications Vol. 4 No. 2 (2010)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.2010.4.2.1

Abstract

A triangular-slot antenna with rectangular patch for 2.3/3.3 GHz WiMax applications has been implemented on DICLAD 527 substrate (relative permittivity εr = 2.5) with 1.524 mm of substrate thickness. A rectangular patch printed on one side of the substrate is fed by a 50 Ω microstrip line and acts as the frequency tuning stub, while the triangular slot is positioned on the opposite side of the substrate, center lined to the rectangular stub. From the measurement results based on VSWR = 2 or equal to the return loss of 9.53 dB, at the lower band of 2.3 GHz the resulting impedance bandwidth is 290 MHz (from 2.16 to 2.45 GHZ) and at the upper band of 3.3 GHz is  370 MHz (from 3.31 to 3.68GHz), providing services for 2.3 GHz and 3.3 GHz frequency bands allocated for WiMax applications. The antenna gain measurement at 2.3 GHz frequency band is almost agrees with the simulation result of 3.2 dBi. While at 3.3 GHz the gain is approximately 4.4 dBi and continues to decrease with increasing frequency. The antenna gain measurement achieves maximum of 4.8 dBi (6 dBi from simulation) at about 3 GHz. The simulation and measurement results are evaluated and discussed.
Prediction Method for Rain Rate and Rain Propagation Attenuation for K-Band Satellite Communications Links in Tropical Areas Baso Maruddani; Adit Kurniawan; Sugihartono Sugihartono; Achmad Munir
Journal of ICT Research and Applications Vol. 8 No. 2 (2014)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.res.appl.2014.8.2.1

Abstract

This paper deals with the prediction method using hidden Markov model (HMM) for rain rate and rain propagation attenuation for K-band satellite communication link at tropical area. As is well known, the K-band frequency is susceptible of being affected by atmospheric condition, especially in rainy condition. The wavelength of K-band frequency which approaches to the size of rain droplet causes the signal strength is easily attenuated and absorbed by the rain droplet. In order to keep the quality of system performance for K-band satellite communication link, therefore a special attention has to be paid for rain rate and rain propagation attenuation. Thus, a prediction method for rain rate and rain propagation attenuation based on HMM is developed to process the measurement data. The measured and predicted data are then compared with the ITU-R recommendation. From the result, it is shown that the measured and predicted data show similarity with the model of ITU-R P.837-5 recommendation for rain rate and the model of ITU-R P.618-10 recommendation for rain propagation attenuation. Meanwhile, statistical data for measured and predicted data such as fade duration and interfade duration have insignificant discrepancy with the model of ITU-R P.1623-1 recommendation.
Co-Authors Achmad Munir Achmad Munir Adi Purwono Ahmad Hasyim Ahmad Hasyim Andri Mahendra Andriyan B. Suksmono Armein Z. R. Langi Armein Z.R. Langi Bamba Riyanto Trilaksono Bambang Riyanto Bambang Riyanto Trilaksono Baso Maruddani Budi Prasetya Eko Marpanaji Febriana Sartikasari Fitria, Lisma Hendrawan Hendrawan Heriansyah Heriansyah Hikmah Adi Putra Innez Karunia Mustikarani Irma Zakia Irna Kartina Iskandar Iskandar Iskandar Iskandar Iskandar Iskandar Iskandar Iskandar Iskandar Iskandar Iskandar Iskandar Istikmal Jajuli, Mohammad Juanda, Enjang Ahmad Langi, Armein ZR Levy Olivia Nur Mohamad Erick Ernawan Muhammad Saiful Fadhil Reyhan Nurain Izzati Shuhaimi Nurfadillah A. Parewe Nurfadillah A. Parewe P.H. Mukti Prayitno Abadi Rahmat Hidayat Rina Pudji Astuti Salik Mukhlishin Sayid Machdar Sayid Machdar Septyo Adi Pratama Sofia Naning Hertiana Sugihartono Sugihartono Sugihartono Sugihartono Sugihartono Sugihartono Sugihartono Sugihartono Suyoto Suyoto Taufik Hasan Taufik Hasan Thay Liung TUTUN JUHANA Udjianna Sekteria Pasaribu Varuliantor Dear Varuliantor Dear Yusnita Rahayu Yuyu Wahyu Yuyu Wahyu