ANALISA MODEL PROPAGASI OKUMURA-HATA DAN COST-HATA PADA KOMUNIKASI JARINGAN WIRELESS 4G LTE
DOI:
https://doi.org/10.31851/ampere.v5i1.4158Keywords:
Path loss, Propagasi, Okumura-Hata, COST-HataAbstract
Propagasi radio memilki peranan yang sangat penting dalam perkembangan jaringan telekomunikasi. Sinyal yang ditransmisikan oleh pengirim ke penerima mengalami redaman yang mengurangi kuat sinyal pada sisi penerima. Redaman yang terjadi pada saat perambatan gelombang di sebabkan oleh Large Scale Fading yang disebabkan oleh pengaruh benda dan bangunan yang ada disekitarnya. Penelitian ini bertujuan untuk membandingkan karakteristik path loss propagasi terhadap beberapa parameter yang ada pada sisi pengiriman maupun penerima serta membandingkan model propagasi large scale yang digunakan saat ini dalam jaringan LTE (Long Term Evolution). Simulasi dilakukan dengan dengan menggunakan Model propagasi Okumura-Hata dan Cost-231 Hata serta menganalisa pengaruh path loss berdasarkan perubahan frekuensi, ketinggian BTS dan juga perbedaan karakteristik wilayah yaitu urban, sub-urban dan rural. Hasil dari penelitian menunjukkan bahwa pada pemodelan Okumura-Hata dan Cost-Hata mempunyai profil path loss yang hampir saya yaitu penggunaan frekuensi yang semakin tinggi, path loss yang dihasilkan semakin besar. Begitu juga dengan ketinggian antenna pemancar, semakin tinggi antenna pengirim maka path loss yang dihasilkan semakin kecil. Dari sisi karakteritik wilayah meunjukkan bahwa path loss yang dihasilkan pada daerah urban lebih tinggi dibandingkan dengan daerah sub-urban maupun rural area dikarenakan wilayah urban memiliki struktur bangunan yang lebih tinggi dan padat.References
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