Performance evaluation of channel modeling techniques in mobile system

Dissertant

Jafar, Ahmad Abd al-Karim

Thesis advisor

Muhammad, Ayidah Khalaf

University

University of Technology

Faculty

-

Department

Department of Electrical Engineering

University Country

Iraq

Degree

Master

Degree Date

2011

English Abstract

-In mobile communication systems the path loss models are necessary for a proper planning, interference estimation, frequency assignments and cell parameters.

There are numerous path loss models like Okumura, Hata and Lee models, but none of the path loss models can be considered as a universal model.

In this work Hata, Lee, Walfisch-Ikegami and Free Space Loss models have been compared with practical path loss based on series of measurements in Karada district in Baghdad in GSM900 downlink band.

Hata model showed the closest path loss predictions with mean relative error = 9.77% and mean square error = 10.8 dB, But these results are far from good prediction results and need enhancement.

Hata model was optimized using Least Squares method based on measured received signal power.

The optimized Hata model showed much better results from the original Hata with mean relative error = 5.6% and mean square error = 6.96 dB.

The simulation and calculations were implemented using MATLAB R2009b.

The measurements were done using Field Test Display (FTD) with a compatible hand phone to measure signal strength.

AGround Positioning System (GPS) was used to measure the distance from transmitter.

Main Subjects

Telecommunications Engineering

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-305280