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All Journal Perfecting a Video Game with Game Metrics Sistemasi: Jurnal Sistem Informasi JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING InComTech: Jurnal Telekomunikasi dan Komputer
Sirmayanti, Sirmayanti
Politeknik Negeri Ujung Pandang
Computer Science & IT Electrical & Electronics Engineering Engineering

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 1 
Analysis Predicted Location of Harmonic Distortion in RF Upconverter Structure Sirmayanti Sirmayanti; Mike Faulkner
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 6: December 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i6.7628

Abstract

A new mathematical analysis to predict the magnitude size of the distortion products from the signal up-conversion process output is presented. The signal up-conversion process converts the digital baseband from the analog baseband into a radio frequency signal. When the signal baseband involves frequency offsetting then occurring a number of distortion products which can reduce the dynamic range so it is difficult to meet the spectrum mask requirements within the operating band. This paper will focus on methods of new mathematical analysis using a continuous frequency range and only applies to a single side band tone, with constant amplitude into any value of frequency offsets. The novel contribution to the analysis starts at generating the gate signal and convolution of the gate signal into the reference carrier signal. The results show very close between the simulation results and the calculation of the predicted location of the distortions.
Watering Stimulation of Alliun cepa L Plants Based on IoT Through the ESP32 Microcontroller and MQTT Protocol Sirmayanti Sirmayanti
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol 4, No 2 (2021): EDISI JANUARY 2021
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v4i2.4456

Abstract

Allium cepa L. (Shallots) is classified as a seasonal plant that requires special water treatment techniques correctly and precise watering methods. Farmers in the highlands of Enrekang Regency, South Sulawesi, mostly still prefer watering this plant traditionally and manually even though it is in large garden areas. Farmers also find it difficult to handle watering crops on large tracts of land and are overwhelmed by not having enough time to care for water evenly. Implementation of Internet of Things (IoT) based onion watering method utilizes an ESP32 microcontroller with the Message Queuing Telemetry Transport (MQTT) protocol, and is very easy for farmers to implement. The MQTT work system implements Publish and Subscribe data. The method and system for designing this tool is that if the shallot plant is 1-10 days old, this tool will water twice a day evenly, the morning and evening. Then if the shallot plant is 11-60 days old, this tool will water only once, in the morning. When the watering automation is implemented, the information system is in the form of a message (on the smartphone) signing by logic 0. Conversely, if this tool does not flush, then the message that comes on the smartphone is as logic 1.
Rekayasa Sistem Kendali Gripper melalui Robot Transporter menggunakan WiFi Module ESP8266 Sirmayanti Sirmayanti; Sriutari Amelia; Nur Afifah; Ibrahim Abduh
InComTech : Jurnal Telekomunikasi dan Komputer Vol 11, No 1 (2021)
Publisher : Department of Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/incomtech.v11i1.10091

Abstract

Tujuan penelitian ini terkait pada rancang bangun robot pemindah barang berbasis IoT (Internet of Things) yang mudah dan praktis. Dengan menggunakan WiFi (Wireless Fidelity) module, ESP8266, maka sistem robotik ini berfokus pada fungsi mesin lengan pengendali. Keseluruhan sistem kendali robot menggunakan media smartphone terkoneksi melalui jaringan wireless pada saluran seluler 3G atau 4G. Sistem ini merupakan solusi praktis bagaimana pengendali mobile robot berbasis Android ini dapat memiliki target jarak kendali yang jauh dan mudah untuk diaplikasikan. Metode penelitian ini yaitu merekayasa kendali gripper dengan lengan robot berfungsi transporter dengan kemampuan mengangkat, menjepit, menggeser atau memindahkan barang, sehingga barang tersebut dapat dipindahkan. Desain perancangan ini disertai dengan mikrokontroler sebagai pengelola perintah yang mengendalikan gripper dan motor servo sebagai penggerak utama aktuatornya. Hasil penelitian menunjukkan bahwa sistem uji lengan robot dapat berfungsi dengan baik, dimana robot dapat mengangkat beban maksimal 545,6 gram sesuai dengan rancangan yang telah dibuat. Jarak maksimal jangakuan pengontrolan perintah robot adalah 155 meter. 
Comparative Study of QoS on Video Meeting Tool Application in 4G LTE Network using Wireshark Sirmayanti Sirmayanti; Asriani Tain; Nurul Khaerani Hamzidah
Sistemasi: Jurnal Sistem Informasi Vol 12, No 1 (2023): Sistemasi: Jurnal Sistem Informasi
Publisher : Program Studi Sistem Informasi Fakultas Teknik dan Ilmu Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/stmsi.v12i1.2069

Abstract

Video meeting is a broadband internet-based service for long-distance communication, both visual and audio, in one room or in different rooms at the same time. Network testing using wireshark software connects to the Telkomsel operator's 4G LTE network. QoS parameters can display network quality such as throughput, packet loss, delay and jitter. The research experiment test used two conditions with different variables in the five types of video meeting tools being compared; zoho meeting, cisco webex meeting, google meet, zoom meeting and microsoft teams. First-condition uses random variables that do not consider the value of the number of participants and camera & microphone conditions to each client. Second-condition uses a fixed variable that the number of each client is 5 participants for each application (camera & microphone is on). The first-condition results showed that only Zoom Meeting which had a QoS value classified as Poor (index 1), especially the jitter value, compared to other applications. This application has an average jitter of 151,871 ms, that compared to TIPHON standard of 125 ms to 255 ms. The second-condition obtained Very Good QoS on throughput, packet loss and delay variables in all applications. Their variable jitter in each application is Zoho Meeting (0.101 ms), Cisco Webex meeting (0.074 ms), Google Meet (0.179 ms), Zoom meeting (0.021 ms), and Microsoft Teams (0.015 ms) which only in the standard 0 ms to/ d 75 ms. However, all applications according to the TIPHON standards are still in the Good category (index 3). The overall index average of all applications shows Good QoS.Keywords: video meeting,  wireshark, quality of service, 4G LTE.
Co-Authors Asriani Tain Ibrahim Abduh Mike Faulkner Nur Afifah Nurul Khaerani Hamzidah Sriutari Amelia