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All Journal Proceedings Konferensi Nasional Sistem dan Informatika (KNS&I) Social, Humanities, and Educational Studies (SHEs): Conference Series Industrika : Jurnal Ilmiah Teknik Industri
Muhammad Samsudin, Muhammad
STMIK STIKOM Bali
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Social Sciences

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Analisis SER (Symbol Error Rate)Pada MIMO Untuk Orthogonal STBC dan Quasi-Orthogonal STBC Samsudin, Muhammad
Proceedings Konferensi Nasional Sistem dan Informatika (KNS&I) 2015
Publisher : Proceedings Konferensi Nasional Sistem dan Informatika (KNS&I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (184.745 KB)

Abstract

Masalah gangguan pada kanal atau multipath fading dapat diatasi dengan sistem MIMO (Multiple Input Multiple Output). Sistem ini menggunakan sejumlah antena pengirim dan sejumlah antena penerima.Hal tersebut bertujuan untuk menjadikan sinyal pantulan sebagai penguat sinyal utama sehingga saling mendukung atau tidak saling menggagalkan. Selain itu sistem ini juga secara signifikan mampu meningkatkan troughput data dan range (jangkauan) komunikasi tanpa lebar pita (bandwidth) frekuensi dan daya pancar tambahan. Fading merupakan penurunan dan fluktuasi daya sinyal pada penerima. Fadingmenyebabkan kondisi dimana sinyal tidak dapat lagi dikenali pada proses pengembalian sinyal kedalam bentuk informasi. Fadingdapat dikategorikan kedalam dua bagian yaitu large-scle fading yang berkaitan dengan path-lossdan small-scale fading yang berkaitan dengan lintasan jamak antara pemancar dan penerima. Jika dipandang pada bagaimana pengaruh kanal pada dimensi waktu dan frekuensi mempengaruhi sinyal, maka kanal dapat dikelompokan kedalam kanal flat fadingdan kanal frequency selective fading. Sedangkan jika dipandang pada seberapa cepat sinyal yang dikirim mengalami perubahan bila dibandingkan dengan seberapa cepat perubahan darikanal, kanal dapat dikelompokkan ke dalam kanal yang fast fadingdan kanal slow fading.
Rancang Bangun Sistem Keamanan Kolam Ikan Berbasis IoT dan Sensor Gerak Passive  Infra-Red (PIR) Deri, Rahmi Rismayani; Faisal, Restu; Permana, Muhammad Rafif; Madani, Adnan; Samsudin, Muhammad
Industrika : Jurnal Ilmiah Teknik Industri Vol. 9 No. 4 (2025): Industrika: Jurnal Ilmiah Teknik Industri
Publisher : Fakultas Teknik Universitas Tulang Bawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37090/0h7kkt40

Abstract

Theft and disturbance of wild animals in fish ponds is still a serious challenge that has not been optimally handled by conventional security systems. This research designed an IoT-based security system using Arduino Uno R3, PIR sensors, buzzers, and LEDs as an effective and economical solution. The method used is research and development (R&D) with the stages of design, implementation, and testing. The results of the functional test showed that the PIR sensor detected movement up to 7 meters with a response of 0.2 seconds, while the notification system worked effectively. Field simulations recorded 87% accuracy and the system remained stable in the operational conditions of the pool. User surveys resulted in an average score of 4.5 out of 5. The system offers novelty in simple yet reliable integration for an open environment. Implicitly, this technology can significantly improve pond safety and is easily adopted by small-scale fish farmers. Keywords: Arduino, PIR sensor, Pool security    
Increasing Mathematics Learning Outcomes Through Zoom Meeting Assisted Problem Based Learning (PBL) Learning Models Samsudin, Muhammad
Social, Humanities, and Educational Studies (SHES): Conference Series Vol 5 (2022): Social, Humanities, and Educational Studies (SHEs): Conference Series (Special Issue 1
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/shes.v5i5.78107

Abstract

This research is motivated by the teacher's difficulties in learning mathematics. The lack of teacher ability in designing and implementing learning models is an obstacle to children's success in the process of learning mathematics. The aim of this research is to improve the learning outcomes of students in grade VI Elementary School by using the Problem Based Learning model assisted by zoom meetings. The research used was Classroom Action Research (CAR) of two cycles which previously carried out the pre-cycle stage of action, each cycle consisting of 4 stages: planning, implementing, observing, reflecting. The results obtained from the implementation of the research showed an increase, namely the average value of the test in the first action was 84 and the average value of the second action test was 94 while in the pre-cycle stage the average value was 72. These results indicate that the Problem Based Learning (PBL) learning model can improve student learning outcomes, especially the Class VI Mathematics at SDN 9 Boyolali.
Co-Authors Candra Ahmadi, Candra Faisal, Restu Madani, Adnan Permana, Muhammad Rafif Rahmi Rismayani Deri