Advanced Signal Processing for Wireless Multimedia Communications
ITCC '00 Proceedings of the The International Conference on Information Technology: Coding and Computing (ITCC'00)
Blind direct multiuser detection for uplink MC-CDMA: performance analysis and robust implementation
EURASIP Journal on Wireless Communications and Networking - Special issue on innovative signal transmission and detection techniques for next generation cellular CDMA systems
Simultaneous principal-component extraction with application to adaptive blind multiuser detection
EURASIP Journal on Applied Signal Processing
Stochastic MV-PURE estimator: robust reduced-rank estimator for stochastic linear model
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
An improved group-blind adaptive receiver under multi-path channel
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
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Previously developed blind techniques for multiuser detection in code division multiple access (CDMA) systems lead to several near-far resistant adaptive receivers for demodulating a given user's data with the prior knowledge of only the spreading sequence of that user. In the CDMA uplink, however, typically the base station receiver has the knowledge of the spreading sequences of all the users within the cell, but not that of the users from other cells. In this paper, group-blind techniques are developed for multiuser detection in such scenarios. These new techniques make use of the spreading sequences and the estimated multipath channels of all known users to suppress the intracell interference, while blindly suppressing the intercell interference. Several forms of group-blind linear detectors are developed based on different criteria. Moreover, group-blind multiuser detection in the presence of correlated noise is also considered. In this case, two receiving antennas are needed for channel estimation and signal separation. Simulation results demonstrate that the proposed group-blind linear multiuser detection techniques offer substantial performance gains over the blind linear multiuser detection methods in a CDMA uplink environment