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User-aided sub-clustering for CoMP transmission: Feedback overhead vs. data rate trade-off

: Thiele, L.; Kurras, M.; Börner, K.; Haustein, T.


Matthews, M.B. ; IEEE Signal Processing Society; Naval Postgraduate School -NPS-, Monterey/Calif.:
Conference Record of the Forty Sixth Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2012. Vol.2 : Pacific Grove, California, USA, 4 - 7 November 2012 / in cooperation with the Naval Postgraduate School, Monterey, California
Piscataway: IEEE, 2012
ISBN: 978-1-4673-5050-1
ISBN: 978-1-4673-5051-8
Asilomar Conference on Signals, Systems & Computers <46, 2012, Pacific Grove/Calif.>
Conference Paper
Fraunhofer HHI ()

The need for cell densification leads to inter-cell interference mitigation techniques known as coordinated multi-point (CoMP) transmission and reception. This work focuses on the Long Term Evolution - Advanced (LTE-A) frequency division duplex (FDD) downlink. In order to group active users for clustered zero-forcing (ZF) beamforming, we will introduce a greedy user scheduling method using a projection-based rate approximation metric. The clusters are defined in a network-centric fashion, where users are allowed to provide channel feedback for the whole cluster or a sub-set only.