Networking Concepts

Running head: NETWORKING CONCEPTS 1
Networking Concepts
Name of Student
Institution Affiliation

NETWORKING CONCEPTS 2
Q1: The digital microwave radio system shown in Fig 1 below operates in the 18GHz radio
frequency band and provides 2x2 Mbps transmission capacity between two sites. The system
deploys a passive repeater.
Figure 1: Microwave Link Configuration
1. Calculate the nominal Receive Signal Level (RSL) at the input of the receiver in dBm
assuming free space conditions

NETWORKING CONCEPTS 3
Solution
Unfaded conditions:
In these conditions, the link budget is determined by the formula
PRX= PTX-LTX-FLTX+ATX-FSL+ARX-FLRX- LRX
Where PRX= Unfaded Nominal Receiver Level in dBm
PTX = output of transmitter power in dBm
LTX =branching loses in the transmitter
FLTX = transmitter feeder loses of the waveguide or cable in dB
ATX = the antennae gains in dBi (Rathnayaka et al., 2011).
FSL = the free space loses
ARX = the antenna gains in dBi
FLRX =receiver feeder loses of the waveguide or cable in dB
LRX =receiver branching loses
The provided parameters are
PTX = + 23 dBm
LTX = 3dB
FLTX = 1.5dB
ATX = 39.5dBi