Link Budget

The Link Budget calculations directly influence the performance of the
CDMA system since it is used to determine power settings and capacity
limits for the network. Proper selection of the variables that comprise the
link budget is a very obvious issue.
Two links are used: forward and reverse. The forward and reverse links
utilize different coding and modulation formats. The first step in the link
budget process is to determine the forward and the reverse links’ maximum
path losses. The forward links’ maximum path loss is determined using
Table 3-9a.
The data gathered shows that the maximum path loss sustainable is
about 159.6 dB using the parameters selected. The reverse link calculations
are shown in Table 3-9b.
The maximum path loss that is sustainable in the reverse direction is
139.dB, which shows that the base station is reverse link limited for the
parameters inputted into the link budget.