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Transmisi: Jurnal Ilmiah Teknik Elektro
Published by Universitas Diponegoro
ISSN : -     EISSN : 24076422     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 14, No 3 (2012): TRANSMISI" : 5 Documents clear
IMPLEMENTASI DEKODER MIMO BERBASIS DETEKSI SPHERE PADA WLAN 802.11n Anky Setyadewa; Wahyul Amien Syafei; Imam Santoso
Transmisi: Jurnal Ilmiah Teknik Elektro Vol 14, No 3 (2012): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (398.912 KB) | DOI: 10.12777/transmisi.14.3.78-84

Abstract

Abstrak Wireless LAN adalah suatu teknologi nirkabel yang berbasis OFDM (Orthogonal Frequency Division Multiplexing) dan MIMO (Mutiple Input Multiple Output) yang dapat digunakan untuk komunikasi data. Peningkatan permintaan pengguna sistem Wireless LAN juga menyebabkan peningkatan pengembangan Wireless LAN. Standard dari Wireless LAN adalah IEEE802.11a/b/g dan IEEE802.11n yang menggunakan teknik OFDM dan MIMO untuk meningkatan laju data tanpa memerlukan tambahan bandwidth. Tujuan dari paper ini adalah untuk mengimplementasikan algoritma deteksi Sphere pada simulator WLAN 802.11n pada bagian MIMO blok decoder. Parameter yang diamati adalah nilai BER vs SNR (signal to Noise Ratio). Hasil yang diharapakan adalah kinerja yang lebih baik dibandingkan dengan algoritma deteksi linear (MMSE, ZF) dan algoritma deteksi optimal, MLD. Pada MCS 13 untuk nilai BER 10-4, hasil simulasi menunjukkan bahwa metode ZF, MMSE, MLD dan SD mencapainya pada SNR 44 dB, 42 dB, 31 dB dan 33 dB. Sedangkan pada MCS 14, keempat metode mencapai nilai BER 10-4 pada SNR 46 dB, 44 dB, 31 dB dan 33 dB. Dan pada MCS 15 akan mencapai nilai BER 10-4 pada SNR 55 dB, 53 dB, 36,5 dB dan 39,5 dB. Dibandingkan dengan MLD, algoritma deteksi Sphere akan bernilai lebih besar tetapi dengan kompleksitas yang lebih sedikit. Kata Kunci : WLAN 802.11n, MIMO, OFDM, decoding, Sphere Detektor, BER
Perancangan Sistem Kontrol Genetic-Fuzzy: Studi Kasus Pada Pengendalian Top And Side End Point Composition Dan Bottom Reflukstemperature Pada Distillation Column Meilia Safitri; Aris Triwiyatno; Wahyudi Wahyudi
Transmisi: Jurnal Ilmiah Teknik Elektro Vol 14, No 3 (2012): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (503.671 KB) | DOI: 10.12777/transmisi.14.3.85-90

Abstract

Genetic-Fuzzy Control is one of the control technique which is use to solve the non-linear problems by combinating two control methods, Fuzzy Logic Controller and Genetic Algorithm. Genetic algorithm is use to overcome the difficulties in determining the membership function parameter that can optimally work on Fuzzy Logic Controller. In this paper Genetic-Fuzzy control is used to control Shell Heavy Oil Fractionator which is mulvariable system with 3 input and 3 output. Decoupling have the function to reduce interaction between input and output that are not paired. Keyword : Genetic-Fuzzy control, distillation column, decoupling, MATLAB Simulink, Multivariable system
Pemodelan Dan Simulasi Motor Dc Dengan Kendali Model Predictive Control (MPC) Sinuraya, Enda Wista
Transmisi Vol 14, No 3 (2012): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.525 KB) | DOI: 10.12777/transmisi.14.3.91-96

Abstract

Motors are devices that convert electrical energy into mechanical energy. The D.C. motors that runs on direct current (DC) electricity convert electrical energy into rotational energy. That rotational energy is then used to lift things, propel things, turn things, etc. the implementation model predictive control for controlling a D.C motor can change system’s output before setpoint be changed. Keyword: D.C Motor, model predictive control (MPC), setpoint
Aplikasi Pengolahan Citra Untuk Identifikasi Produk Berdasarkan Label Kemasannya Sudjadi, Sudjadi; Somantri, Maman; Yudanto, Scifo Anggi; Prasetyo, Hanung
Transmisi Vol 14, No 3 (2012): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.107 KB) | DOI: 10.12777/transmisi.14.3.97-103

Abstract

The development of information technology today is growing very fast. The software not only required in running a fast execution but also efficient in the utilization of network bandwidth so that traffic does not become heavy. With the swift network-based computing devices into everyday life, the higher the demand to take advantage of technology agent in the process of problem solving based mobility. This study purpose to implement technology on a mobile Agent software with a case study of a software used to perform a book search on multiple database servers. In software, the agent will move from one database server to another server database to find books that sought out and returned to the client computer and show the results obtained. In this research using Aglet 2.0.2 as the software used for build of such applications. Aglet is used to develop agents who will move from one computer to another computer. To view the search results using PHP and HTML language. Based on the results of tests have been done, the conclusion that application could be implemented by the method of Mobile Agents. Mobile Agents used consists of three kind of AgentOne which serves to make AgentTwo and send it to computer database server, AgentTwo which serves to find the books what are looking for and make AgentThree, and AgentThree which serves to bring the results and go back to the client computer. These three agents formed a collaboration of good programs so the system book search can work as expected. Keywords : Agent, Mobile Agent, Aglets, Book Searching
PEMANFAATAN LAYANAN SMS PADA PONSEL UNTUK APLIKASI E-MAIL Utomo, Pringgo Budi; Zahra, Ajub Ajulian; Isnanto, R. Rizal
Transmisi Vol 14, No 3 (2012): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (432.748 KB) | DOI: 10.12777/transmisi.14.3.104-110

Abstract

Abstract The development of technology has replaced manual system into automation system. In telecommunications sector, there is an e-mail (electronics mail) that replaces the common letter which is previously sent through the Post Office. The use of e-mail is more effective because it is more faster. Today Internet users are getting increasingly so the Internet connection becomes slow. For a fast Internet connection requires a payment that is relatively expensive to internet service providers, so that the process of sending and receiving e-mail in any time or in realtime is quite difficult. Based on the fact above, this research was done to develop an application that utilizes short message service on a phone that is used for e-mail applications. This application runs on a computer that functions as a server. A modem ,that is connected to a server, is used for the process of receiving and sending SMS to the destination mobile number. Internet connection using a LAN internet connection to get stablity and fast internet connection. Mobile phones sending e-mail just by sending SMS that accordances with the format to the server, then the server will upload the contents of that SMS to e-mail destination. When there is incoming e-mail at the registered e-mail account in the system, automatically e-mail content will be downloaded by the system and will send to the account e-mail owner's phone number. The process of sending and receiving e-mail on phone is done by using the short message service, because Internet connection process only occurs on the server. From the test results, it is obtained that average delay result is at least 33.1 seconds for delivering more than 600 characters. Sending an e-mail from phone to gmail.com is 10 seconds, faster than shipments to yahoo.co.id (14.6 seconds). From these test results concluded that the use of different mobile number does not affect the sending and receiving SMS between users and systems, as well as SMS messages to the inbox system will not be processed if the wrong SMS format and not from registered users. Keywords: E-mail, SMS, Internet, phone cellular

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