Abstract
In this paper, a phase matrix rotation model was proposed to improve the performance of Multicarrier-Code Division Multiple Access (MC-CDMA) based Fast Fourier Transform (FFT) under the Additive White Gaussian Noise (AWGN) channel and frequency selective fading channel. This model is used to reduce the effect of multipath fading. The results extracted by a computer simulation for a single user. Then it compared with the original technique for MC-CDMA based FFT for both systems. As a result, it can be seen from the proposed technique that a high performance improvement was obtained over the conventional MC-CDMA, were the Bit Error Rate (BER) is widely reduced under different channel characteristics for frequency selective fading and the AWGN channel.
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