With the emergence of Code Division Multiple Access (CDMA), the communication world has been bestowed with state-of-the-art multiple access schemes that are used to allow many simultaneous subscribers to the same fixed bandwidth radio spectrum. The problem, however, is that there is a limit to the capacity and performance of this technique as Multiple Access Interference (MAI) stems along with this technology. Therefore, an analysis which basically focuses on the effect of this Multiple Access Interference is essential. The main goal of this work is to analyze the multiple access
interference in Direct-Sequence Code Division Multiple Access (DS-CDMA). It mainly focuses on the effects on the Bit Error Rate (BER) as a result of a change in Signal-to-Noise (SNR), which varies with the number of users assigned to a channel. The result of this study demonstrated that the probability of occurrence of an error in the received signals increase as the number of users sharing the same channel increases, maintaining other parameters constant. This is directly attributed to the fact that SNR decreases as the number of subscribers to the same channel increases. However, further analysis requires the due consideration of other parameters like external effects to decide on the optimum
number of users to share a given channel.