###### tags: `UNILA`

## Assigment 1 CHANNEL MODELING

Nama : Hans Khalif Hafif
Student ID : 1915031078
Team : A-3

# 1. Find locations where each of the following types of paths could be received. Also draw the path:
a. Direct LOS (Orange)
b. Reflected path one bounce (Blue)
c. Reflected path two bounce (Purple)
d. Diffracted path (Red)
e. Transmission through wall or window (Yellow)


# 2. Source Code


# a. Path gain for 2-ray model


# b. Path gain for 3GPP Urban Microcell (Line of Sight)


# c. Path gain for 3GPP Urban Microcell with 1 reflection


# 3 EXPLANATION

Based on the above images, there are differences between the 2 ray models, 3GPP UMi LOS, and 3GPP UMi LOS with Ground Reflection. On the simple simulation of 2 Ray mood model, Decrease of dB tends to be stable and there is no diffraction in the 2 GHz, 28 GHz, and 60 GHz bands. No noise there.
From 3GPP UMi LOS or in practice, there is some noise for all three signals with the same signal graph. There is a lot of noise when the signal reaches rarely more than 40 meters. The signal still tends to be stable.
From 3GPP UMi LOS with Ground Refrection, the three signal forms experience a decrease in dB to a distance of 30 meters, then an increase in dB to a distance of about 45 meters, then decrease again and so on.