Aris Aditama, 0915031081 (2015) ANALISIS KAPASITAS SHORT MESSAGE SERVICE (SMS) DAN PROBABILITY PACKET LOSS PADA SISTEM PERINGATAN DINI NIRKABEL DI TANGKI FLUIDA. Fakultas Teknik, Universitas Lampung.
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Abstract
Abstrak Pada penelitian ini dirancang sebuah sistem peringatan dini nirkabel dan mengkaji bagaimana menanggulangi kesalahan komunikasi atau keterlambatan informasi yang diterima oleh operator dengan cara menganalisis trafik dan Blocking Probability SMS (Short Massege Service) pada sistem peringatan dini nirkabel pada tangki fluida. Sistem peringatan dini ini berjalan dengan baik dan bekerja pada volume tetesan air sebesar ± 0,5 ml. Berdasarkan perhitungan Blocking Probability SMS berdasarkan jumlah pelanggan SMS yang meningkat maka Blocking Probability meningkat juga. Pada jumlah pelanggan SMS 8448 Blocking Probability SMS nya 0.0093% dan saat jumlah pelanggan SMS 11520 Blocking Probability SMS nya 0.1719%. Pada Probabality Packet Loss dipengaruhi Probability BER. Perhitungan Probability BER menggunakan modulasi yang digunakan yaitu16-QAM ( dengan code rate ½ dan ¾ ) dan 64-QAM ( dengan code rate 2/3 dan ¾ ) dipengaruhi oleh jarak UE ke BTS. Jarak ini berpengaruh karena dalam perhitung Probability BER menggunakan model propagasi Walfish-Ikegami untuk menghitung Pathloss. Pada jarak UE dan BTS 0.2 km Probability Packet Loss dengan menggunakan modulasi 16-QAM ½ 2,55 x 10-14, modulasi 16-QAM ¾ 1,14 x 10-14, modulasi 64-QAM 2/3 3,05 x 10-9, dan 64-QAM ¾ 2,94 x 10-9. Nilai Packet Loss 16-QAM lebih kecil dari pada 64-QAM dikarenakan nilai bit yang digunakan berbeda, 16-QAM menggunakan 4 bit sedangkan 64-QAM menggunakan 6 bit. Kata kunci: Sistem peringatan dini, Blocking probability SMS, Probability Packet loss, Probability BER. Abstrak Bahasa Inggris In this study designed a wireless early warning system and examine how to tackle the communication errors or delays in information received by the operator by analyzing traffic and Blocking Probability SMS (Short massege Service) on a wireless early warning system in the fluid tank. The early warning system is running well and working on the volume of water droplets of ± 0.5 ml. Based on calculations of SMS Blocking Probability, and based on the number of SMS subscribers increases, Blocking Probability increase as well. At the number 8448 SMS subscribers SMS Blocking Probability its 0.0093% and current customer number 11520, SMS Blocking Probability its 0.1719%. In the Probability Packet Loss affected BER Probability. BER Probability calculation using the modulation that is 16-QAM (with code rate ½ and ¾) and 64-QAM (with code rate 2/3 and ¾) is affected by distance UE to BTS. Distance is influential because the BER Probability calculation use Walfish-Ikegami propagation model to calculate Pathloss. At a distance of 0.2 km BTS UE and Packet Loss Probability using 16-QAM modulation ½ of 2.55 x 10-14, 16-QAM ¾ modulation of 1.14 x 10-14, 64-QAM 2/3 modulation of 3.05 x 10 -9, and 64-QAM ¾ of 2.94 x 10-9. Packet Loss value of 16-QAM is smaller than the 64-QAM bits used due to different values, 16-QAM using 4 bits while the 64-QAM using 6 bits. Keyword: Early warning system, Blocking probability SMS, Probability Packet loss, Probability BER.
| Item Type: | Other |
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| Subjects: | Teknologi > Teknik Elektro. Rekayasa elektronik Nuklir Teknologi > Teknik Elektro. Rekayasa elektronik Nuklir |
| Divisions: | Fakultas Teknik > Prodi Teknik Elektro |
| Depositing User: | 0443280 . Digilib |
| Date Deposited: | 21 Oct 2015 05:05 |
| Last Modified: | 21 Oct 2015 05:05 |
| URI: | http://digilib.unila.ac.id/id/eprint/13779 |
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