Mobile - Wireless Communications White Papers
Transmit Selection Diversity for Unitary Precoded Multiuser Spatial Multiplexing Systems With Linear Receivers
Overview Multiuser spatial multiplexing is a downlink transmission technique that uses linear transmit pre-coding to multiplex multiple users and pre-cancel inter-user interference. In such a system the spatial degrees of freedom are used for interference mitigation and generally come at the expense of diversity gain. This paper proposes two pre-coding methods that use extra transmit antennas, beyond the minimum required, to provide additional degrees of diversity. Multiple-Input Multiple-Output (MIMO) communication is widely acknowledged as the key technology for achieving high data rates in bandwidth constrained wireless systems. In this paper, the downlink of a MultiUser Spatial Multiplexing (MUSM) communication system is investigated where antenna arrays are used at both the Base Transceiver Station (BTS) and at K mobile users.
| Publisher | Institute of Electrical and Electronics Engineers | File Format | |
|---|---|---|---|
| Date Published | August 2005 | Downloads | 2 |
| Format | White Papers | ||
| Topics | |||
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