In Table 5.6 we present an example of link budget for a WCDMA down-link 12.2 kbps voice user.
This deployment scenario is for an outdoor UE. The procedure taken below is to estimate the received
signal power, then obtain the overall interference plus noise floor of the receiver. With these two parameters,
then SNR or Ec/(Io No) can be calculated. This can be converted to Eb/(Io No) by utilizing the
processing gain and code rate. This value is then used to predict the receiver sensitivity.
We have included a 3-dB rise of interference in the cell. We have also included a variable called
various implementation loss. This includes the implementation loss due to impairments plus loss due
to the in vehicle loss plus any power control increase.
In Table 5.7 we present an example link budget for a WCDMA down-link 12.2 kbps voice user.
This deployment scenario is for an indoor UE. Most of the parameters were kept the same, but we
included the loss due to building penetration loss. We have included the loss of the signal traversing
the outer wall only. In other words, we didn??™t place any restriction on the loss due to floor penetration,
since this would require us to provide the actual floor the UE is resting on as well as the height of the
NodeB antennas [85].
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