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Circuits, Communications and Systems, Pacific-Asia Conference on (2009)
Chengdu, China
May 16, 2009 to May 17, 2009
ISBN: 978-0-7695-3614-9
pp: 43-46
Multi-User MIMO (MU-MIMO) is the technique which used in the scenarios with a large number of users to be served in one cell, and high capacity gains can be achieved by transmitting independent data streams to different users sharing the same time-frequency resources. Because more than two users share the same time-frequency resources in MU-MIMO systems, there is a big problem for the receiver to cancel the interference of the other users. Inspired by the idea of interference cancellation in CDMA systems, a novel multi-user MIMO scheme is proposed in this paper. It employs spreading in the transmitter and joint detection (SP-JD) in the receiver. Simulation results show that SP-JD scheme could achieve higher sum rates capacity and better bit error rate (BER) performance than Zero-Forcing (ZF) scheme while the receiver is not aware of the precoding vectors applied to the streams transmitted to the other users.
spreading and joint detection (SP-JD); multi-user MIMO; Block Diagonalization (BD); Per-User Unitary and Rate Control (PU2RC); Zero-Forcing (ZF)

Z. Huang, J. Zheng and J. Wei, "A Novel Multi-User MIMO Scheme in OFDM Systems," 2009 Pacific-Asia Conference on Circuits, Communications and Systems (PACCS 2009)(PACCS), Chengdu, 2009, pp. 43-46.
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