Space-Time Pre-RAKE Multiuser Transmitter Precoding for DS/CDMA Systems
نویسندگان
چکیده
A novel linear precoding method that combines Multiuser Interference (MAI) cancellation, pre-RAKE filtering and Transmitter (Tx) antenna diversity is proposed for the downlink of the Code Division Multiple Access (CDMA) channel. It is demonstrated that this method has better performance than single user space-time pre-RAKE precoding with relatively low increase in complexity. In addition, several novel and previously proposed MAI cancellation methods for the uplink and downlink are compared. Long range prediction is employed to enable performance of Tx precoding for rapidly time varying fading CDMA channels.
منابع مشابه
A Space-Time Pre-RAKE Transmitter Diversity Method for W-CDMA Using Long Range Prediction
1 This research is funded by NSF grants CCR-9725271 and CCR-0081706 Abstract– Transmitter diversity in the downlink for Code Division Multiple Access (CDMA) systems provides a means to achieve similar performance gains as for the mobile-station receiver diversity without the complexity of a mobile-station receiver antenna array. Pre-RAKE precoding at the transmitter can be employed to achieve t...
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