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All Journal International Journal of Electrical and Computer Engineering IAES International Journal of Artificial Intelligence (IJ-AI) Transmisi: Jurnal Ilmiah Teknik Elektro Techno.Com: Jurnal Teknologi Informasi TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Jurnal Mahasiswa TEUB Jurnal EECCIS e-Jurnal Arus Elektro Indonesia Journal of Information Systems Engineering and Business Intelligence ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal Teknologi dan Sistem Komputer Network Engineering Research Operation [NERO] Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Indonesian Journal of Electrical Engineering and Computer Science JAREE (Journal on Advanced Research in Electrical Engineering) International Journal of Engineering, Science and Information Technology Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Rahmadwati Rahmadwati
Unknown Affiliation
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Journal : telkomnika telecommunication computing electronics and control

 1 
Optical sensor based on dye-sensitized solar cell with tobacco chlorophyll Eka Maulana; Rahmadwati Rahmadwati; Sapriesty Nainy Sari; Akhmad Sabarudin
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 4: August 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i4.12613

Abstract

Modified optical sensor based on dye-sensittized solar cell has been successfully fabricated to measure the number of light energy. The electric parameters as the sensor output were achieved from the light illuminance as the sensor input. The measured parameter from optical sensor according to the voltage and current output have been characterized to obtain the sensor performance. In this research, the modified sensor is customized from dye-sensitized solar cell with extracted tobacco chlorophyll dye as the photo-catalysator, photo-electrode of titanium dioxide and Iodine solution for redox reaction. The thick layer deposition with selected material is conducted using spin coating method of 1000 rpm. Based on the absorbance measurement, it shows that tobacco dye has the characteristics of visible light absorption in the wavelength of visible light spectra. The analytical result shows that the sensor has the wide linear characteristic in certain light illuminance and the increasing light intensity produces higher electrical parameter output both current and voltage. This sensor has potential prospect to be used as a light sensor and to be competitive fabrication cost.
Low Complexity Multi-User MIMO Detection for Uplink SCMA System Using Expectation Propagation Algorithm Alva Kosasih; Onny Setyawati; Rahmadwati Rahmadwati
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 1: February 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i1.7365

Abstract

Sparse code multiple access (SCMA), which combines the advantages of low density signature (LDS) and code-division multiple access (CDMA), is regarded as one of the promising modulation technique candidate for the next generation of wireless systems. Conventionally, the message passing algorithm (MPA) is used for data detector at the receiver side. However, the MPA-SCMA cannot be implemented in the next generation wireless systems, because of its unacceptable complexity cost. Specifically, the complexity of MPA-SCMA grows exponentially with the number of antennas. Considering the use of high dimensional systems in the next generation of wireless systems, such as massive multi-user MIMO systems, the conventional MPA-SCMA is prohibitive. In this paper, we propose a low complexity detector algorithm named the expectation propagation algorithm (EPA) for SCMA. Mainly, the EPA-SCMA solves the complexity problem of MPA-SCMA and enables the implementation of SCMA in massive MU-MIMO systems. For instance, the EPA-SCMA also enables the implemantation of SCMA in the next generation wireless systems. We further show that the EPA can achieve the optimal detection performance as the numbers of transmit and receive antennas grow. We also demonstrate that a rotation design in SCMA codebook is unnecessary, which is quite rather different from the general assumption
Co-Authors Akhmad Sabarudin Akio Kitagawa Alva Kosasih Angger Abdul Razak Angger Abdul Razak Anggraini, Monika Ayu Puji Anindita, Ruth Astari Anisari Mei Prihatini Aziz Muslim Azizurrahman Rafli Boby Yusuf Habibi Dachlan, Hary Soekotjo Danang Aditya Nugraha Deron Liang Dewi, Ajeng Kusuma Dhaffin Rayhzan Ferdian Dharmawan Dharmawan Eka Maulana Erni Yudaningtyas Erni Yudhaningtyas Fadilla, Rafa Raihan Faiza Alif Fakhrina Farrel Rafif Ferdian Febriantono, M Aldiki FERDIANA, KHAIRUNISA Gigih Gumilar Golshah Naghdy Habibi, Boby Yusuf Hadi Suyono Huda, Masykur Idhil, Andi Nurul Isri Indriany Ika Kusumaning Putri IMRAN, AZZAM ZAHFRAN Luthfiyah Rachmawati M. Aldiki Febriantono M. Aziz Muslim Mahdin Rohmatillah Masykur Huda Moch. Rusli Mudjirahardjo, Panca Muh Wahid Anshori Riza Muhammad Aswin Muhammad Aziz Muslim Muhammad Dzikrullah Suratin, Muhammad Dzikrullah Muhammad Fauzan Edy Purnomo Muhammad Zulfikri Muhammad Zulfikri Nugraha, Danang Aditya Nurrohman, Muhammad Yogi Onny Setyawati Panca Mudjirahardjo Panca Mudjirahardjo Raden Arief Setyawan Raden Arief Setyawan Rakhmad Romadhoni Riza Hasbi Ash Shiddieqy Robintang Sotardodo Situmorang Rudy Yuwono Ruth Astari Anindita Sanjaya, Mochamad Rofi Sari, Sapriesty Nainy Shaskia Vilardl Ri Cahya Sholeh Hadi P. Sholeh Hadi Pramono Sultoni, Sultoni Suyono, Hadi Tanjo Yui Vita Kusumasari Wijono Wijono Wildan Arif Maulana Yeni Sumantri Yuyu Wahyu Zainul Abidin Zulfa Fahrunnisa