On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
AINA '05 Proceedings of the 19th International Conference on Advanced Information Networking and Applications - Volume 1
Blind adaptive space-time multiuser detection with multipletransmitter and receiver antennas
IEEE Transactions on Signal Processing
IEEE Transactions on Information Theory
Multiple access technologies for B3G wireless communications
IEEE Communications Magazine
MIMO MC-CDMA communications for future cellular systems
IEEE Communications Magazine
From theory to practice: an overview of MIMO space-time coded wireless systems
IEEE Journal on Selected Areas in Communications
Spreading code assignment strategies for MIMO-CDMA systems operating in frequency-selective channels
EURASIP Journal on Wireless Communications and Networking
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
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We consider multiuser MIMO CDMA systems where each user has multiple transmit antennas and different transmit antennas of the same user use the same spreading code. Because transmit antennas of the same user use the same spreading code, inter antenna interference would degrade the system performance. We propose a novel decision-window-based data detection (sequential detection) method to mitigate the inter antenna interference. We also modify the existing single-user single-antenna channel estimation algorithm for multiuser multi-antenna systems. The simulation results show that, under the same channel estimation algorithm, the proposed sequential detection scheme with decision window of two symbols significantly outperforms the non-sequential one which is a special case of the proposed one when the decision window is of one symbol. It also outperforms the existing SIC-VBLAST, decorrelator-VBLAST, and MMSE-VBLAST schemes.