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In this paper the effect of spatial correlation in code division multiple access (CDMA) space-time block coding (STBC) system is investigated. Having some information about the channel of each active user in the transmitter, a linear precoder can be exploited in downlink situation to mitigate the effect of correlation in multiuser system environment which has not been addressed before. Simulation...
In this paper, a low-complexity two-stage decision-directed receiver is proposed for a code- division multiple access (CDMA) multiple-input multiple-output (MIMO) system using space-time block coding (STBC) over a multipath fading channel. In contract to the conventional receivers, the proposed blind receiver can provide a reliable performance without requirement of the pilot symbols.
A low complexity space-time chip semiblind multiuser receiver based upon an adaptive mixing parameter and adaptive step-size for MIMO STBC downlink MC-CDMA with CPICH systems and without CP is proposed. The receiver exploits information from training and desired user signals for updated the algorithm. Information from training and blind modes are combined using an adaptive mixing parameter LMS algorithm...
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