Date of Award

1996

Degree Type

Thesis

Degree Name

Bachelor of Engineering Honours

Faculty

Faculty of Science, Technology and Engineering

First Advisor

Dr Tadeusz Wysocki

Second Advisor

Dr Hans Juergen Zepernick

Abstract

An implementation of a Code Division Multiple Access (CDMA) transmitter has been developed using SIMULINK and MATLAB. This transmitter uses a modified carrier in modulation. This modified carrier, which is frequency modulated, has been shown to reduce intersymbol interference (ISI) and multiple access interference (MAl). These two types of interference are caused by multipath propagation which results in delayed versions of the original signal. The benefits of this modified modulation technique are apparent when there are delays involved. The spreading sequences used are 7- bit Gold codes which allow a maximum of nine users. The initial trials of the transmitter indicate that it is functioning correctly.

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