Code Division Multiple Access (CDMA) is an air interface standard of the third generation mobile communication system, whose excellent performance has been proved in all walks of life recently. However, we have to notice some problems brought by its disadvantages in the system. The spread spectrum codes of Direct Sequence CDMA (DS-CDMA) are not strictly orthogonal in a general way when mobile stations are connected stochastically, because the nonzero blog new shirts 2010 cross-correlation coefficient will cause multi-access interference (MAI). The interference not only limits the system capacity, but also brings Near-far effect, which severely degrades the wedding gowns dresses performance when the number of mobile users increases or the signal power is enhanced. Therefore, MAI is regarded as the main restriction factor to the performance of CDMA system.Multiuser detection (new wedding dresses) combined with the smart antenna array is an efficient technique for interference suppression that can reduce the MAI, solve the Near-far problem and improve system capacity. Moreover, the blind MUD technologies are of great interest in the mitigation of MAI especially in the discount wedding gowns downlinks of CDMA systems, as only the prior knowledge of signature waveform discount wedding dresses and the timing of the desired user are needed without any training sequence and the interference users’ cheap wedding gown dresses information. Over the past decades, a significant amount of research has addressed various blind space-time multiuser detectors owning lower computational complexity and better performance.
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