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Evolution of uplink MIMO for LTE-advanced

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4 Author(s)

The evolution of LTE uplink transmission toward MIMO has recently been agreed in 3GPP, including the support of up to four-layer transmission using precoded spatial multiplexing as well as transmit diversity techniques. In this article, an overview of these uplink MIMO schemes is presented, along with their impact on reference signals and DL control signaling. Receivers suitable for uplink MIMO are presented, and their link performances are compared.

Published in:

IEEE Communications Magazine  (Volume:49 ,  Issue: 2 )