Abstract
We investigate blind adaptive multiuser detection with interference rejection in direct sequence code division multiple access (DS-CDMA) cellular communication systems. A general approach is presented, which is independent of the information transmission rate of the systems. For multiuser detection, the DS-CDMA channel is first modeled into a multiple-input multiple-output (MIMO) signal model framework. Then, based on a decision feedback equalizer (DFE), multiuser information symbols can be recovered without any prior knowledge of the channel and the users' signature waveforms (including the desired user's signature waveform). Simulation results illustrate good performance of the proposed method, and the proposed method can be effectively used in both low-rate and high-rate DS-CDMA systems, which provides it a broader use in practical scenarios.
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