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ANALISIS KINERJA JARINGAN HYBRID KOOPERATIF DEVICE-TO-DEVICE 5G MENGGUNAKAN TEKNIK PEMILIHAN RELAY REAKTIF AZMI, MUHAMMAD RAUDHI; MELINDA, MELINDA; NASARUDDIN, NASARUDDIN
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 8, No 1 (2020): ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v8i1.178

Abstract

ABSTRAK Sistem komunikasi kooperatif device-to-device (D2D) merupakan salah satu strategi peningkatan kecepatan data dan efisiensi energi. Pada sistem kooperatif, mekanisme relay merupakan faktor penting dalam meneruskan informasi. Model jaringan merupakan isu penting untuk meningkatkan kecepatan, kinerja dan efisiensi energi pada sistem. Oleh sebab itu, makalah ini menganalisis kinerja jaringan hybrid kooperatif D2D pada teknologi 5G menggunakan teknik pemilihan relay reaktif atau reactive relay selection (RRS). Beberapa parameter kinerja penting telah simulasikan, seperti model jaringan, SNR, BER dan throughput. Hasil simulasi menunjukkan bahwa jaringan kooperatif hybrid-relay dengan RRS menghasilkan nilai BER yang lebih kecil dan throughput yang lebih tinggi dibandingkan model multi-relay dan multi-hop relay. Dengan demikian, jaringan hybrid-relay dengan pemilihan relay lebih efisien dibandingkan jaringan lainnya. Kata kunci: sistem komunikasi kooperatif, pemilihan relay reaktif, multi-hop, multi-relay, hybrid-relay. ABSTRACT A device-to-device (D2D) cooperative communication system is one of the strategies to increase data speed and energy efficiency. In a cooperative system, the relay mechanism is an important factor in forwarding information. A network model is an important issue to increase the speed, performance and energy efficiency of the system. Therefore, this paper analyzes the performance of D2D cooperative hybrid networks on 5G technology using reactive relay selection (RRS) techniques. Some important performance parameters have been simulated, such as network models, SNR, BER and throughput. Simulation results show that hybridrelay cooperative networks with RRS produce smaller BER values and higher throughput compared to multi-relay and multi-hop relay models. Thus, hybridrelay networks with relay selection are more efficient than other networks. Keywords: cooperative communication system, reactive relay selection, multihop, multi-relay, hybrid-relay.
Desain dan Simulasi Encoder-Decoder Berbasis Angka Sembilan Untuk Transmisi Informasi Digital Yuhanda, Bobby; Nasaruddin, Nasaruddin; Syahrial, Syahrial
Jurnal Buana Informatika Vol 6, No 3 (2015): Jurnal Buana Informatika Volume 6 Nomor 3 Juli 2015
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (726.217 KB)

Abstract

Abstract. The development of information and communication technology is growing rapidly, particularly in the transmission of digital information. The process of transmitting digital information through the communication channel will be interferenced by noise, distortion and multipath fading so that the information is likely to experience an error or incorrect detection at the receiver, which can decrease the system performance. This research proposes the design and simulation of encoder-decoder based on the number nine to transmit digital information reliably and precisely. The goal of this research is to design and simulate the encoder decoder as a scheme of error detection and correction and to reduce bit error rate that occurs during the process of transmitting digital information. The research method uses design and computer simulation where the encoder-decoder is modeled mathematically, design is structured and a computer simulation is developed for the performance of encoder-decoder based on the number nine in the transmission of digital information. The result of this research shows that the proposed encoder-decoder can detect the errors transmission and correct the errors at receiver.Keywords: Digital information, encoder-decoder, coding scheme, and transmission information. Abstrak. Perkembangan teknologi komunikasi dan informasi saat ini sangat pesat, khususnya dalam teknologi transmisi informasi digital. Proses transmisi informasi digital melalui kanal komunikasi akan mendapat gangguan seperti noise, distorsi, interferensi dan multipath fading. Sehingga informasi yang dikirim kemungkinan akan terjadi kesalahan atau salah deteksi pada penerima, yang menyebabkan penurunan kinerja dari sistem. Penelitian ini mengusulkan suatu desain dan simulasi encoder-decoder berbasis angka sembilan untuk transmisi informasi digital, yang mampu bekerja secara handal dan tepat. Adapun tujuan penelitian ini adalah untuk merancang dan mensimulasikan encoder-decoder berbasis angka Sembilan sebagai skema deteksi dan koreksi kesalahan serta mengurangi bit error rate yang terjadi pada saat proses transmisi informasi digital. Metode penelitian yang digunakan adalah perancangan dan simulasi komputer, dimana prosesnya adalah pemodelan secara matematis, perancangan encoder-decoder, pembuatan simulasi kinerja encoder-decoder berbasis angka sembilan untuk transmisi informasi digital. Hasil penelitian ini menunjukan bahwa encoder-decoder yang diusulkan dapat mendeteksi kesalahan transmisi dan mengoreksi kesalahan pada penerima.Kata Kunci: Informasi digital, encoder-decoder, pengkodean kanal, transmisi informasi.
Penghematan Daya pada Sistem Komunikasi Kooperatif Two-Way dengan Pengaturan Rasio Data Rate Nasaruddin, Nasaruddin; Rahmadi, Didi; Muharar, Rusdha
Jurnal Nasional Teknik Elektro dan Teknologi Informasi (JNTETI) Vol 7, No 2 (2018)
Publisher : Jurusan Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1105.825 KB) | DOI: 10.22146/jnteti.v7i2.422

Abstract

Currently, many communication technologies use wireless media because it can provide seamless connectivity and mobile access. In the implementation, wireless communication system faces many challenges, one of them is fading. The effect of fading on a wireless channel will also add power consumption on mobile devices and can reduce the information signal power. However, fading can be overcome by using a cooperative communication system which is a method that utilizes antenna from other users (relays) with the principle of diversity, so the performance of wireless communication system can be improved. This paper proposes power saving on two-way cooperative communication system based on data rate ratio. The method of setting the value of this data rate ratio aims to minimize power consumption in a two-way cooperative communication system, i.e., a full-duplex communication system with quantized and forward (QF) relay protocol. To obtain a minimum power consumption, the ratio of the data rate must be set on the assumption that the value of the transmit power of each source and the relay is equal. The result shows that the system performance is improved, the system SNR value becomes lower, and the power is more efficient by adjusting the ratio of data rate compared to the conventional system without power control.
Perancangan Aplikasi Peristiwa Kriminal Dengan Pendekatan Contextual Design Yusrizal, Yusrizal; Adriman, Ramzi; Syafie, Nasaruddin
InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan Vol 3, No 2 (2019): InfoTekJar Maret
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1668.843 KB) | DOI: 10.30743/infotekjar.v3i2.984

Abstract

Pemetaan lokasi kriminal sangat berguna bagi pihak kepolisian dan masyarakat. Pada proses kerja selama ini, Kepolisian Republik Indonesia (POLRI) masih menggunakan pemetaan dalam bentuk konvensional seperti gambar peta pada kertas yang ditempelkan pada kantor kepolisian. Hingga saat ini, jumlah personel kepolisian pada suatu wilayah belum mencapai tahap ideal, yaitu 1 (satu) orang polisi untuk 100 orang masyarakat, sehingga pengawasan yang dilakukan akan menjadi kurang efektif. Meskipun demikian, pihak kepolisian masih menggunakan data dan informasi yang disimpan pada arsip serta peta konvensional yang memiliki banyak kelemahan seperti terbatasnya informasi yang ditampilkan, dan daya tahan peta serta arsip yang mudah rusak. Berdasarkan permasalahan yang terjadi, telah dilakukan penelitian tentang aplikasi pemetaan criminal, akan tetapi aplikasi tersebut masih memiliki kekurangan seperti belum menggunakan pendekatan atau metode yang dikenal dalam proses perancangan perangkat lunak untuk mengetahui kebutuhan user. Dari beberapa permasalahan yang ditemukan pada peta kriminal yang terdapat di kantor kepolisian, maka ditawarkan solusi dalam proses perancangan aplikasi peristiwa kriminal menggunakan pendekatan contextual design yang mampu mendapatkan kebutuhan user di lapangan. Sementara itu, dalam proses perancangan aplikasi, terdapat 6 (enam) langkah yang dilakukan, mulai dari wawancara kontekstual, interpretasi, konsolidasi data, visioning, storyboarding, user environment design, dan prototyping. Dengan adanya perancangan aplikasi peristiwa kriminal menggunakan pendekatan Contextual Design, maka diharapkan dapat memaksimalkan pengalaman user dalam menggunakan aplikasi sehingga menjadi lebih menyenangkan, menangkap kebutuhan user dengan benar, serta mendapatkan keluaran yang sesuai dengan kebutuhan mereka. Hal ini bertujuan untuk membantu pihak kepolisian sehingga dapat mempermudah kinerja mereka dalam proses mengelola data criminal.
Perbandingan Kinerja Non-Orthogonal dan Orthogonal Amplify and Forward pada Two-Way Cooperative WLAN Rizki, Kurnia; Nasaruddin, Nasaruddin; Adriman, Ramzi
Jurnal Nasional Teknik Elektro dan Teknologi Informasi (JNTETI) Vol 6, No 3 (2017)
Publisher : Jurusan Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1072.696 KB) | DOI: 10.22146/jnteti.v6i3.339

Abstract

Nowadays, the advancement of Wireless Local Area Network (WLAN) technology has developed very rapidly because it is very practical and has effective mobility level. In practice, there is a major problem in wireless communications systems, which is fading. Fading can cause information signal power decreasing. Fading can be overcome using a cooperative communication system, which is a method that utilizes antenna from other users (relays), using principle of diversity, hence the performance of wireless communication system is improved. A relay has several protocols on cooperative communication system, such as Amplify and Forward (AF), Decode and Forward (DF), and Compress and Forward (CF). The AF protocol is divided into two types: Non-Orthogonal Amplify and Forward (NAF) and Orthogonal Amplify and Forward (OAF). In this paper, the performance comparison of two-way NAF and OAF in terms of outage probability, throughput, and spectral efficiency is investigated. The method used is computer simulation with system modeling and performance analysis. The simulation results show that OAF protocol can minimize outage probability and increase throughput and spectral efficiency, compared to NAF protocol on two-way WLAN cooperative network.
Efisiensi Energi Sistem Komunikasi Kooperatif Multi-relay Quantize and Forward Berdasarkan Pemilihan Relay Akhyar, Fityanul; Nasaruddin, Nasaruddin; Muharar, Rusdha
Jurnal Nasional Teknik Elektro dan Teknologi Informasi (JNTETI) Vol 6, No 1 (2017)
Publisher : Jurusan Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1262.974 KB) | DOI: 10.22146/jnteti.v6i1.296

Abstract

Currently, the increasing energy consumption is a global issue. Information technology and telecommunication industry is one of the areas with the largest energy consumption. The growth of mobile data users is an issue and the biggest challenge for the future. The cooperative wireless communication system has been the focus of research as one of the information delivery strategy with more efficient energy consumption. Energy efficiency in the cooperative wireless communication system can be improved by using a relay between base station and user device, where the distance between base station and user can be shortened, thus, the energy transmission can be minimized. Relay mechanism can be built by utilizing the protocol in the cooperative communication system, such as amplify and forward (AF), decode and forward (DF), and quantize and forward (QF). Relay-selection is an important issue in a cooperative wireless communication system that can reduce energy consumption at the system level. This study analyzes energy efficiency of multi-relay QF cooperative communication for line-of-sight (LOS) and non-line-of-sight (NLOS) environment based on relay selection strategies: reactive and proactive relay selection. A computer simulation is conducted based on a system model and mathematical analysis. Energy efficiency is calculated based on power consumption of signal transmission and observed in the distance between the source, relay, and destination. Simulation result shows that multi-relay QF networks with relay selection consume lower energy than without relay selection, hence, the energy usage in the relay selection networks is more efficient. Moreover, the strategy of proactive relay selection provides low energy consumption and high energy efficiency compared to the reactive relay selection strategy.
Desain dan Simulasi Encoder-Decoder Berbasis Angka Sembilan Untuk Transmisi Informasi Digital Yuhanda, Bobby; Nasaruddin, Nasaruddin; Syahrial, Syahrial
Jurnal Buana Informatika Vol 6, No 3 (2015): Jurnal Buana Informatika Volume 6 Nomor 3 Juli 2015
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (726.217 KB) | DOI: 10.24002/jbi.v6i3.438

Abstract

Abstract. The development of information and communication technology is growing rapidly, particularly in the transmission of digital information. The process of transmitting digital information through the communication channel will be interferenced by noise, distortion and multipath fading so that the information is likely to experience an error or incorrect detection at the receiver, which can decrease the system performance. This research proposes the design and simulation of encoder-decoder based on the number nine to transmit digital information reliably and precisely. The goal of this research is to design and simulate the encoder decoder as a scheme of error detection and correction and to reduce bit error rate that occurs during the process of transmitting digital information. The research method uses design and computer simulation where the encoder-decoder is modeled mathematically, design is structured and a computer simulation is developed for the performance of encoder-decoder based on the number nine in the transmission of digital information. The result of this research shows that the proposed encoder-decoder can detect the errors transmission and correct the errors at receiver.Keywords: Digital information, encoder-decoder, coding scheme, and transmission information. Abstrak. Perkembangan teknologi komunikasi dan informasi saat ini sangat pesat, khususnya dalam teknologi transmisi informasi digital. Proses transmisi informasi digital melalui kanal komunikasi akan mendapat gangguan seperti noise, distorsi, interferensi dan multipath fading. Sehingga informasi yang dikirim kemungkinan akan terjadi kesalahan atau salah deteksi pada penerima, yang menyebabkan penurunan kinerja dari sistem. Penelitian ini mengusulkan suatu desain dan simulasi encoder-decoder berbasis angka sembilan untuk transmisi informasi digital, yang mampu bekerja secara handal dan tepat. Adapun tujuan penelitian ini adalah untuk merancang dan mensimulasikan encoder-decoder berbasis angka Sembilan sebagai skema deteksi dan koreksi kesalahan serta mengurangi bit error rate yang terjadi pada saat proses transmisi informasi digital. Metode penelitian yang digunakan adalah perancangan dan simulasi komputer, dimana prosesnya adalah pemodelan secara matematis, perancangan encoder-decoder, pembuatan simulasi kinerja encoder-decoder berbasis angka sembilan untuk transmisi informasi digital. Hasil penelitian ini menunjukan bahwa encoder-decoder yang diusulkan dapat mendeteksi kesalahan transmisi dan mengoreksi kesalahan pada penerima.Kata Kunci: Informasi digital, encoder-decoder, pengkodean kanal, transmisi informasi.
ANALISIS TINGKAT KEBUGARAN JASMANI MAHASISWA PGSD SELAMA PANDEMI COVID-19 DITINJAU DARI KEMAMPUAN GERAK NON LOKOMOTOR Widodo, Arif; Safruddin, Safruddin; Nasaruddin, Nasaruddin; Radiusman, Radiusman; Sobri, Muhammad
Bravo's : Jurnal Program Studi Pendidikan Jasmani dan Kesehatan Vol 8, No 4 (2020): DESEMBER 2020
Publisher : STKIP PGRI Jombang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32682/bravos.v8i4.1728

Abstract

The Covid-19 pandemic forces all learning activities to be carried out online. College sports lessons are also conducted online. This study aims to determine the level of physical fitness of students during online learning during the Covid-19 pandemic. This research uses a quantitative descriptive approach. Data collection using a survey. The instrument used was a performing test. Indicators of student physical fitness can be seen from the non-locomotor motion of standing stork and sit and reach. The research sample was 30 students. Data analysis using descriptive statistics. The results showed that the physical fitness of students during the Covid-19 pandemic when viewed from their non-locomotor ability to move was in the poor category. This can be seen from the low results of student body balance and flexibility tests.
A Model to Investigate Performance of Orthogonal Frequency Code Division Multiplexing Syafie, Nasaruddin; Melinda, Melinda; Fitria Sari, Ellsa
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 3: July 2012
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

OFCDM is an attractive multiple access scheme for high data rate application in Fourth-generation (4G) wireless communication system. Previously, several researches were only investigated the performance of OFCDM based on variable spreading factor. However, there are several system parameters may affected the performance of OFCDM. Therefore, this paper investigates the impact of several parameters on the performance system of OFCDMA over Rayleigh Fading channel as a realistic channel in wireless communications.The simulation system model of OFCDM is introduced. The computer simulation is developed by using MATLAB programming in order to show the impact of several parameters for OFCDM’s performance including number of carriers, size of symbol, symbol rate, bit rate, size of guard interval and spreading factor. The simulation results show that the higher number of carriers, larger size of symbol, higher symbol rate, higher bit rate and larger spreading factor are giving the better system’s performance in terms of Bit Error Rate (BER). However, the larger guard interval is giving the worst system’s performance.So all the parameters should be considered in the implementation of OFCDM for the 4G wireless communication system. DOI: http://dx.doi.org/10.11591/telkomnika.v10i3.621
Optimized Power Allocation for Cooperative Amplify-and-Forward with Convolutional Codes Nasaruddin, N; Melinda, M; Elizar, E
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 8: August 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v12.i8.pp6243-6253

Abstract

Future wireless communications technology should fulfill the demands of multimedia applications, interactive internet service, high data rates and power efficiency. However, wireless channel is affected by multipath fading that can degrade the system performance. To overcome the problem, cooperative communication has been introduced to be an efficient diversity technique to combat the multipath fading, to improve capacity and the system performance, and to reduce the energy comsumption by using power allocation technique in the network. This paper proposes an optimized power allocation (OPA) for cooperative amplify-and-forward (AF) protocol with convolutional codes (CC). A computer simulation model for the proposed system is developed using Matlab programming.  Then, performance of the system is evaluated in terms of the system throughput, bit error rate and amplification coeficient for power allocation. Furthermore, the different rates of CC are also considered in the network. Simulation results show that multi-relay AF network can provide a higher throughput and lower bit error rate. Moreover, the performance of OPA system is better than that of non-OPA system. The using lower rate of CC in the OPA system provides coding gain for multi-relay cooperative AF network. Finally, the different amplification coeficients among relays give a significant improvement to optimize the system performance.