Abstract
Wireless communication is used in many sectors to support the need of communication, the example of wireless communication is applied in mission critical network. Wireless communication system that used in mission critical are Terrestrial Trunked Radio (TETRA) and Long Term Evolution (LTE). TETRA systems supports voice services while LTE supports voice and data services. Co-exsitence between LTE and TETRA in same frequency band is one of the optimilazition quality for mission critical network. For this final project analyses interference in co-exsitence between LTE and TETRA in frequency band 800 MHz. There are four scenarios using extended-hata model propagation in urban area. There are several parameters that reviewed, desired Received Signal Strength (dRSS), interfering Received Signal Strength (iRSS), Carrier to Interference ratio (C/I) and probability of interference. In all scenarios occur Co-Channel Interference (CCI) between LTE and TETRA in frequency band 800 MHz so the performance not optimal. The performance increased when add guard band variation. The variation that applied are 0,5 MHz, 0,75 MHz, 1 MHz. Based on the result of the simulation that have been done, proposed the used of guard band variation for elevate the performance.
Highlights
Nowadays application and choice of suitable wireless communication that can support optimization to elevate the quality that user need because of every time there is increasing in traffic and frequency allocation is limited
With guard band variation produced different result of each parameter in scenario no guard band occur Co-Channel Interference it showed with probability of interference is above the threshold, with guard band variation guard band 0,5 MHz, 0,75 MHz, and 1 MHz the value of probability of interference below threshold
When interference will occur and that will decrease the optimization of the system and that is in harmony with the result in table above, when probability of interference will be above the threshold and when be below the threshold
Summary
Nowadays application and choice of suitable wireless communication that can support optimization to elevate the quality that user need because of every time there is increasing in traffic and frequency allocation is limited. Wireless communication offers many variant of technology for some sectors, one of the example is services for mission critical network. One of the technology that used in mission critical communication is Teresstrial Trunked Radio (TETRA). TETRA designed to offer wide coverage and high rate availbality network that can operate pretty well in disaster area. Along with the primacy TETRA has lack and that is low data rate and smaller capacity if compare with usual cellular network. The lack that TETRA has make operator in mission network do coexesistence between TETRA with one of cellular technology, Long Term Evolution (LTE). LTE network offer better quality if compare with previous generation of cellular technology. Coexistence two different technology with same operate frequency could occur interference. In this research LTE and TETRA operate in 800 MHz band.
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