Abstract
The performance of a direct-sequence code-division multiple-access (DS-CDMA) system in an overlaid cell environment using a decision feedback equalizer (DFE) receiver is presented. It is shown that a DFE receiver can separate the desired signal from several interfering signals without any loss in the overall capacity. The results indicate that DS-CDMA with a DFE receiver can be used to integrate dual-rate services without adversely affecting the system capacity. The overall system capacity is shown to be approximately equal to half the spreading gain and is unaffected when interferers at different data rates are present. The proposed scheme needs only average power control and is not found to be sensitive to power control errors of /spl plusmn/2 dB.
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