User's Manual

Navini Networks, Inc. Ripwave Base Station I&C Guide
109
level of received power required for successful decoding of the received signal, and should be 11
dB above the noise floor. The mechanism of uplink power control will ensure that the signal
transmitted by each modem arrives at the RFS at the desired level.
Other Input Data Provided by the Spreadsheet Program
Data supplied by the program appears in white fields
Loss & Weight – These are the loss of the selected type of Jumper Cable, in dB per foot (or dB
per meter) and the weight in pounds per foot (or kilograms per meter), respectively.
Back Plane Loss – This is the loss between the SYN card and the point at which the CAL cable
is connected in the back of the BTS. This loss is estimated as 5.0 dB.
Minimum and Maximum Cal Board Loss – These values represent the extremes of the range of
possible losses through the Cal Board (between the point at which the CAL Cable is connected
and the points where each one of the eight RF Cables are connected). There are, therefore, eight
such paths in a Cal Board. The Minumum Cal Board Loss is estimated as 27 dB and the
Maximum Card Board Loss is estimated as 31 dB.
Weight of the Power and Data Cable – Estimated as 0.785 pound per foot (1.168 kg/m).
Gain Per Antenna Element – That is, 12 dB for Omni antennas and 17 dB for Panel antennas.
Internal Data Tables
Three Data tables are used for the calculations:
TABLE H1 - Operating Parameters
TABLE H2 - Main Cable Parameters