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RESEARCH
– M.Sc. Thesis A General Framework for Multiuser MIMO Channel Shortening
Equalization
In a communication scenario between a
single base station and multiple users (scenarios like IEEE 802.16 (WiMAX) or
xDSL), MU-MISO/SIMO and MU-MIMO scenarios are investigated
for joint transmitter-receiver structures that achieve channel shortening
equalization. Minimum mean square error (MMSE)
criterion is used as a basis for the design of the filters. Joint
transmitter-receiver design increases the performance because of the
increased degree of freedom at the filters. All the filters are designed in
frequency domain and the duality of the uplink and downlink channels are used
to optimize the transmitterreceiver pair filters.
Duality occurs from the fact that the achievable mean square error values are
the same for both channels. The filters of the downlink channel can be
calculated using the filters of the dual uplink channel which are relatively
easier to evaluate. This work was supported by TUBITAK
under project no 107E056. Proceedings are published in several IEEE
conferences (SSP-2009, SIU-2010, VTC-2010). |
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