Long Term Evolution (LTE) Network Design Frequency Division Duplex (FDD) of 1800 MHz Based on Subscriber Growth Forecasting in 2025 at Denpasar, Indonesia

The Long Term Evolution (LTE) network is a technology developed by the 3rd Generation Partnership Project (3GPP) release 8. The capabilities that support downlink speeds of up to 100 Mbps and uplinks of up to 50 Mbps. There needs to be optimal planning before implementing LTE network technology due to the limitations of network development owned by the operator. Planning carried out includes coverage planning by choosing the appropriate are method, frequency and bandwidth. In LTE network technology, there are 2 divison duplex methods, Frequency Division Duplex (FDD) and Time Division Duplex (TDD). Frequency allocations commonly used in Indonesia are 900 MHz, 1800 MHz, 2100 MHz and 2300 MHz. This final project is planning 1800 MHz frequency FDD LTE network with 20 MHz bandwidth in Denpasar City with forecasting the number of LTE subscribes in 2025. Planning simulation is using Atoll radio network planning software. The planning used the coverage planning method. The output generated from this plan is the number of sites needed to consider the Maximum Allowed Path Loss (MAPL). Some input parameters include population data, LTE user penetration, population trend in 2025, link budget calculation, and mapping required containing clutter class, earth contour, and population density to determine urban, suburban and rural areas. The results obtained from the planning of the coverage by calculating the link budget to get the required number of eNodeBs is 129 sites. Besides, using PCI results provide to can increase the average value Carrier to Interference Noise is 0.08 dB, increase the average value of throughput is 412,59 kbps, and decrease the BLER is 0,6 km
²
.