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Perbandingan Perhitungan Trafik Jam Sibuk CDMA 2000 1x pada BTS Inner City dan BTS Outer City dengan Mempergunakan Metode ADPH, TCBH, FDMH dan FDMP Eka Wahyudi; Wahyu Pamungkas; Adimawono Basuseno
JURNAL INFOTEL Vol 5 No 2 (2013): November 2013
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v5i2.6

Abstract

Cellular communication system is a wireless communication system where the subscriber can move within a wide network coverage. Code Division Multiple Access (CDMA) is a multiuser access technology that is each user uses a unique code contained in the access channel in the system. Calculation and determination of peak hours can be done by several methods such as: Average Daily Peak Hour (ADPH), Time Consistent Busy Hour (TCBH), Fixed Daily Measurement Hour (FDMH), Fixed Daily Measurement Period (FDMP). The effectiveness of the channel should be determined by occupancy both at inner city territory and outer city territory location. Using design Erlang (Erl) for supply channel at Base Transceiver Station (BTS) that provided, BTS has a design Erlang of 369,83 Erl at inner city and it has a design Erlang of 241,8 Erl at outer city. Peak hour on the inner city occurred at 12:00 to 15:00, whereas the outer city of peak hour occurred at 18:00 to 21:00. Effectiveness value that determined by operator are : <20% = low occupancy (not effective), 21% to 69% = normal occupancy (effective), and > 70% = high occupancy (very effective). In this case occupancy values obtained in each method is between 21% to 69% which means effective
Analisis Parameter Ber Dan C/N Dengan Lnb Combo Pada Teknologi Dvb-S2 Wahyu Pamungkas; Eka Wahyudi; Anugrah Ahmad Fauzi
JURNAL INFOTEL Vol 5 No 2 (2013): November 2013
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v5i2.8

Abstract

Instalasi antena parabola berfungsi untuk memudahkan pada saat pengarahan pointing antena ke satelit yang dituju. Permasalahan yang diketahui yaitu bagaimana perilaku parameter Bit Error Rate (BER) dan Carrier to Noise (C/N) pada LNB Combo yang menggunakan teknologi DVB-S2. Setelah instalasi antena parabola dilakukan dan sukses, maka langkah selanjutnya yaitu melakukan pointing antena. Pointing antena diarahkan pada posisi satelit yang akan dituju. Satelit yang akan dituju yaitu Palapa D menggunakan frekuensi C-Band sedangkan Ku-Band diarahkan pada satelit NSS 6. Setelah pointing selesai dilakukan maka langkah selanjutnya yaitu menghubungkan dengan Digital Video Broadcasting Satellite Second Generation (DVB-S2). DVB-S2 merupakan receiver. Parameter yang diamati yaitu parameter BER dan C/N. Parameter BER merupakan perbandingan dengan jumlah bit yang diterima secara tidak benar dengan jumlah bit informasi yang ditransmisikan pada selang waktu tertentu. Parameter C/N merupakan perbandingan nilai pada carrier yang diterima dengan nilai sinyal noise yang dihasilkan dalam suatu link. Diperlukan juga Low Noise Block (LNB) Combo yang berguna untuk mentransmisikan sinyal ke receiver. LNB yang digunakan merupakan LNB Combo, dimana dua buah frekuensi yakni C-Band dan KU-Band menjadi satu dalam sebuah LNB. Setelah melakukan pengukuran dan melihat hasil pengukuran, dapat disimpulkan bahwa LNB Combo berpengaruh pada sinyal C-Band yang dihasilkan, sinyal C-Band akan mengalami penurunan kualitas, ini dibuktikan dari hasil pengukuran yang telah dilakukan bahwa nilai parameter C/N dan BER pada Ku-Band lebih baik daripada nilai parameter C/N dan BER pada CBand.
Analisis Kebutuhan Bandwidth Pada Pemanfaatan Web Streaming Justin.tv Sebagai Media E-Learning Dengan Menggunakan Wirecast Dan Desktop Presenter Muhammad Ubaidilah; Adnan Purwanto; Wahyu Pamungkas
JURNAL INFOTEL Vol 6 No 1 (2014): May 2014
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v6i1.9

Abstract

Perkembangan teknologi informasi begitu cepat seperti sekarang telah banyak mengubah sudut pandang banyak orang, antara lain sudut pandang orang untuk mengubah dunia pendidikan menjadi lebih baik. Salah satu contohnya pembelajaran berbasis Information and Communication Technologies (ICT) yaitu pembelajaran menggunakan video streaming. Dengan instalasi software open source Wirecast dan Desktop presenter digunakan untuk membuat video pembelajaran Streaming, disiarkan secara real time melalui media broadcast justin.tv (internet TV Channel), diharapkan dapat lebih mendukung konsep pembelajaran kapan dan dimana saja. Masalah terbesar dari teknologi ini adalah keterbatasan bandwidth. Bandwidth adalah parameter penting untuk melakukan streaming dalam jaringan. Sedangkan proses komunikasi menggunakan video digital ini menghabiskan resource yang cukup besar. Sehingga penggunaan wireshark di sini sangat diperlukan untuk menganalisis bandwidth pada paket yang diterima oleh client. Dari hasil pengukuran video dengan standar H.264 resolusi (720 x 540), dengan rata-rata 20 menit dalam pengambilan sampel, sebanyak 30 pengujian sampel streaming video menggunakan wireshark, diperoleh rata-rata throughput keseluruhan 0,343 Mbps, rata-rata throughput terendah 0,309 Mbps dan throughput tertinggi 0,372 Mbps. Dapat disimpulkan bahwa jika dihasilkan throughput yang lebih besar maka kualitas video streaming akan lebih baik, tetapi jika throughput dihasilkan semakin kecil maka kualitas video streaming akan menurun
Pemanfaatan Jaringan Komputer Untuk Aplikasi IPTV (Internet Protocol Television) Studi Kasus Akatel Sandhy Putra Purwokerto Galih Sasmi Ramdhani; Wahyu Pamungkas; Yana Yuniarsyah
JURNAL INFOTEL Vol 2 No 2 (2010): November 2010
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v2i2.80

Abstract

Internet Protocol Television (IPTV) adalah suatu pengembangan baru dalam software komunikasi client-server yang mem-broadcast video yang berkualitas tinggi melalui jaringan internet protocol. IPTV melayani baik siaran langsung (live) maupun program atau video yang tersimpan di server. Streaming adalah sebuah teknologi untuk memainkan file video atau audio secara langsung ataupun dengan prerecorded dari sebuah mesin server. File video atau audio yang terletak pada server dapat secara langsung dijalankan pada komputer client sesaat setelah ada permintaan dari users sehingga proses download yang menghabiskan waktu cukup lama dapat dihindari. Digital Video Broadcasting (DVB) adalah salah satu sistem yang digunakan untuk mentransmisikan siaran TV / Video digital hingga sampai ke pengguna akhir (end-user). Proses Transmisi siaran TV umumnya masih menggunakan metode analog, maka dengan adanya streaming TV channel berbasis DVB merupakan suatu perkembangan distribusi siaran televisi yang tadinya secara analog menjadi digital. Oleh karena itu pada penelitian ini akan dibahas mengenai aplikasi IPTV yang berbasis DVB dengan metode streaming pada Ubuntu 9.04 yang merupakan distro Linux dengan media transmisi Wireless LAN Akatel Sandhy Putra Purwokerto. Metode streaming yang digunakan adalah broadcast yaitu pengiriman data, dimana data dikirimkan ke banyak titik sekaligus, tanpa melakukan pengecekan apakah titik tersebut siap atau tidak, atau tanpa memperhatikan apakah data itu sampai atau tidak. Contoh penggunaan sistem ini adalah siaran televisi dan radio.
Modulasi Digital Menggunakan Matlab Wahyu Pamungkas; Anggun Fitrian Isnawati; Adi Kurniawan
JURNAL INFOTEL Vol 4 No 2 (2012): November 2012
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v4i2.102

Abstract

In telecommunication systems, the determination of the modulation system is an important method in the process of sending information from transmitter to receiver. In the simulation that is done using QPSK modulation system (Quadrature Phase Shift Keying), 8-QAM (Quadrature Amplitude Modulation), 16-QAM (16-Quadrature Amplitude Modulation) that uses AWGN (Additive White Gaussian Noise) channel in the transmission system uses MATLAB software. The execution of the simulation is aimed to describe how the characteristics of the waveform of each block of the modulator, to add noise in the AWGN channel and demodulator. Performance of modulation system testing is used BER (bit error ratio) method. Looking of the faults of comparison bits results of before and after the transmitted bits by using Monte Carlo simulation model. Testing on this simulation using the input data as much as 10.000 data symbols randomly and the level of Eb/No that is various for each modulation used. Performance results BER with the level of Eb / No at 1 dB of the simulated system modulation on the BER values obtained for QPSK 0.0570, 8-QAM at 0.1085 while the 16-QAM at 0.1582 and then the performance of QPSK modulation is the best. If the Eb / No is increased to 8 dB then the becomes BER QPSK smaller modulation is equal to 0.00035, the 8-QAM BER obtained at 0.0076, while the 16-QAM modulation to be 0.0139
Analisis Kualitas Jaringan Akses Tembaga Terhadap Layanan Speedy Studi Kasus Di PT.Telkom,Tbk Divisi Access Site Operation Purwokerto Wahyu Pamungkas; Nunung Sadtomo; Erlinda Febrianingtyas
JURNAL INFOTEL Vol 4 No 2 (2012): November 2012
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v4i2.105

Abstract

The development of fast evolving telecomunication technologies starting from communications cable to wireless communications. One of the communication cable for data is a technology Asymetric Digital Subscriber Line (ADSL). ADSL technology is an access technology that enable data communications, voice and video simultaneously at cooper access network media. Speedy service is one example of the use of ADSL technology. Telkom Speedy offers internet access speeds ranging from 384 Kbps for downstream speed and 3 Mbps for upstream speed. Speed of access internet is affected by the quality of the network. Parameters that effect the quality of network are : attenuation, Signal to Noise Ratio (SNR), Packet Loss, Bit Error Ratio (BER), jitter and time to life (TTL). In this study analysis of network quality affected by these parameters were measured advance to the quality of the network by using the EMBASSY software, while the perform measurements speedtest by using internal web aplications PT.Telkom,Tbk. After measurement is complete then performed the analysis for determine network quality. Based on observations can be known on the upload and download speed the capacity of 384 Kbps, 1024 Kbps and 3 Mbps. Of these three on capacity can be known to the average percentage of the upload speed is found to be 83,33 %, while the percentage of download speeds is found to be 76,67 %
Analisis Link Budget Antena Sideband Doppler Very High Omni-Directional Range (DVOR) Pada Jalur Lintasan Penerbangan Eka Wahyudi; Wahyu Pamungkas; Bayu Saputra
JURNAL INFOTEL Vol 5 No 1 (2013): May 2013
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v5i2.108

Abstract

Analisis Perhitungan Cakupan Sinyal Sistem Wcdma Pada Area Kampus Akademi Teknik Telekomunikasi Sandhy Putra Purwokerto Alfin Hikmaturokhman; Wahyu Pamungkas; Pambayun Ikrar Setyawan
JURNAL INFOTEL Vol 5 No 1 (2013): May 2013
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v5i1.110

Abstract

Perkembangan industri wireless saat ini mengalami kemajuan sangat pesat. Teknologi 3G yang ditetapkan oleh ITU akan berperan sangat penting dan semakin dominan dalam perkembangan teknologi komunikasi. Dengan berkembangnya jumlah pelanggan selular WCDMA dipastikan membutuhkan juga cakupan jaringan di dalam sebuah area, baik di dalam ruangan maupun di luar ruangan. Pembahasan berupa studi kasus mengenai analisa cakupan sinyal sistem WCDMA pada sebuah area. Yang paling berpengaruh dalam penelitian ini adalah Effective Isotropic Radiated Power (EIRP) dan Received Signal Code Power (RSCP). Hasil penelitian menunjukan bahwa hasil perhitungan EIRP adalah 58 dBm dan RSCP -117,73 dBm. Selanjutnya, hasil drive test menunjukan pada bagian outdor lantai 1 diperoleh hasil sebesar -90 dBm, sedangkan untuk bagian indoornya yaitu -99 dBm. Untuk bagian outdoor lantai 2 nilainya -95 dBm dan bagian indoor-nya yaitu -100 dBm
Analysis of Position Angle of Arrival in Multipath Fading Channel using Correlated Double Ring Channel Model for VANET Communications Jans Hendry; Anggun Fitrian Isnawati; Wahyu Pamungkas
JURNAL INFOTEL Vol 10 No 2 (2018): May 2018
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v10i2.372

Abstract

Correlated Double Ring channel modeling in the mobile to mobile communication system (M2M) and vehicular based communication system was pointed out. This modeling required the transmitter and receiver were randomly moving and surrounded by scatterers in a static ring. The scatterers’ positions were placed randomly at the radius of the ring of transmitter and receiver. Received signals were measured based on complex envelope parameters. Two signals propagation scenarios were implemented, they were signals of Rayleigh and Rician distributed. In order to calculate the Rayleigh and Rician complex envelope values, there were some parameters involved which were Angle of Arrival (AoA) and velocity of transmitter and receiver that created Doppler effects. The effects of AoA parameter were investigated towards envelope complex values of Rayleigh and Rician according to predetermined various velocities and scatterers’ positions were divided into four positions criteria. The simulation result shows that for scheme 2 at velocity 40 m/s, distribution magnitude for Rayleigh is 0,1 and Rician is 0,5. It concludes that Rician distribution always outperforms Rayleigh distribution for all predetermined velocities and this scheme give the largest magnitude over all. This is because of the closest distance between scatterers of transmitter and receiver. Also, certain velocities range over all scatterers’ positions, the magnitude of Rayleigh and Rician complex envelope have similar graphic tendency.
The foF2 depression over pameungpeuk during solar minimum and its application on HF radio communication Jiyo Jiyo; Wahyu Pamungkas; Syifa Namira Ramadhani
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.v14i2.771

Abstract

The foF2 depression of the ionosphere layer is a reference for determining the maximum usable frequency depression for an HF communication circuit. This paper discusses the foF2 depression observed at the Pameungpeuk observation station ((7.65°S, 107.96°E; inclination 32.38°S), in 2018 - 2021 when solar activity is minimum and the sun is at a minimum, but the foF2 depression continues to occur up to the severe level. Likewise, geomagnetic disturbances also occur to a moderate level, so that geomagnetic disturbances are a potential cause of foF2 depression. Another result is that the temporal variation pattern of the foF2 depression is less clear so that statistical models cannot be used. The correlation between the number of occurrences of foF2 depression in a month and the number of occurrences of geomagnetic disturbances is relatively low and found in months without the occurrence of geomagnetic disturbances but still foF2 depression occurs, so that geomagnetic disturbances are not the only cause of foF2 depression. Another possibility is the cause of foF2 depression is solar eclipse. In the application, information on the prediction of the foF2 depression that will occur can be used in frequency management, so that a frequency channel is obtained that matches the reflectivity of the ionospheric layer during operation. Anomalies of solar activity and geomagnetic disturbances can be used as inputs in predicting the foF2 depression.