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The major problem that the authors are faced too in wireless systems is the interference. This problem contributes in limiting the performance of cellular networks. In 3G, Wide Code Division Multiple Access (WCDMA) techniques play an important role. WCDMA is defined as a digital cellular wireless technique that uses the method of spread spectrum to convert a digital narrow radio signal to a wide radio signal. Among the popular civilian techniques that use spread spectrum communications, they find Code Division Multiple Access (CDMA).
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