Wireless Communication: FSPL and Link Budget Analysis

Running Head: ELECTRONICS
Wireless communication
Student’s Name
Course
University
Date

EECTRONICS 2
a) Calculate the FSPL in dB for a distance of 5km and 10km for different frequencies
5.8GHz, 2.4GHHz and construct a table as follows;
FSPL dB
Distance km 2.4GHz 5.8 GHz
5 114.0336 121.6980
10 120.0542 127.0542
FSPL dB=20log10(d) + 20log10 (f) + 32.45
20log10 (5) + 20log10 (2400 MHz) + 32.45
=13.9794+ 67.6042 + 32.45
=114.0336
FSPL dB=20log10(d) + 20log10 (f) + 32.45
20log10 (5) + 20log10 (5800 MHz) + 32.45
=13.9794 + 75.2686 + 32.45
=121.6980
FSPL dB=20log10(d) + 20log10 (f) + 32.45
20log10 (10) + 20log10 (2400 MHz) + 32.45
=20 + 67.6042 + 32.45
=120.0542

EECTRONICS 3
FSPL dB=20log10(d) + 20log10 (f) + 32.45
20log10 (10) + 20log10 (5800 MHz) + 32.45
=20 + 75.2686 + 32.45
=127.0542
b) For the information given below calculate the link budget analysis for the wireless system
which will involve calculating the following;
 Received power
 Link margin
Distance 5km
Frequency 5.8GHz
Link type Point-to-point, line-of-sight
Tx power +23 dBm
Antenna gain 24dBi
Assume negligible loss for cabling and
connectors
Receiver sensitivity -72dBm
Assume that we are using the same antennas at the transmitter and the receiver side the link
budget calculations will be the same as the link budget in both direction is expected to be
symmetrical. In cases where 2 types of antenna systems with different transmit power are used
we must perform two link budget analysis, one in each direction.
Received power=transmitted power (dBm) + gains (dB) – loses (dB)