Abstract :
In microwave communications systems a lot of interference that can worsen the
performance of the system, such as multipath fading. Multipath fading generally occurs
due to the reflection by the objects around the transmission line. This reflection will cause
different lengths of the signal path so that the received signal is the sum of the signals and
delayed. Optimization is needed to improve the quality of microwaves to overcome this
fading. One methods used to overcome fading is by using technique diversity. To support
the cellular technology required by the design of microwave networks using Pathloss 5.0
and to maintain communication between base stations remains in the best perfomance then
in the planning and analysis of link budget. To be able to use the appropriate system, use
availability as a provision benchmark to see the reliability of the microwave design system.
In the analysis also made a comparison between the design before using diversity method
obtained 99.99751% availability. On the simulation using space diversity obtained
99.999992% availability and on design using frequency diversity obtainedr 99.99982%
availability. From these discussions can be concluded on the implementation of space
diversity and frequency diversity is very important for optimal results in microwave
network design.
Keywords: Multipath fading, diversity, link budget, availability