Browsing by Author "Rahman, Himika"

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    Performance of Wireless DS-CDMA System with Fading
    (Military Institute of Science and Technology, 2009-12) Sultana, Nigar; Rahman, Himika
    This paper develops and models a DS-CDMA wireless network by simulation. It present an over view of CDMA transmission systems as compared to other multiple access schemes. The channel parameters and channel conditions are varied and the performance studied. The investigation of spreading, modulation and coding is carried out. BPSK modulation techniques are used to see the performance of the system when each is used. The BER is used as a tool to monitor the system output as SNR is varied. The AWGN channel is used in the simulation. The simulation starts with a single user and later the number of users is increased and the results evaluated. The final results are compared to the theoretically calculated results and finally concluded.