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Multi-user MIMO multi-cCell systems: Finite SNR rate loss analysis

: Wunder, G.

Fechner, R. ; Informationstechnische Gesellschaft -ITG-:
17th International ITG Workshop on Smart Antennas, WSA 2013. CD-ROM : March 13-14, 2013, Stuttgart, Germany
Berlin: VDE-Verlag, 2013 (ITG-Fachbericht 240)
ISBN: 978-3-8007-3466-5
4 S.
International Workshop on Smart Antennas (WSA) <17, 2013, Stuttgart>
Fraunhofer HHI ()

The rate loss gap due to imperfect channel state information at the transmitter in a multi-user MIMO multi-cell system is analyzed. Results from [1] are generalized for systems incorporating user selection and an arbitrary beamforming scheme. It is found that, if the transmitter is allowed to perform a user selection and uses an arbitrary beamforming scheme, the same scaling of the rate loss gap can be achieved if the feedback bits are doubled.