Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

A system-level study on multi-user MIMO Transmission for dense FDD networks

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


Matthews, M.B. ; Naval Postgraduate School -NPS-, Monterey/Calif.; IEEE Signal Processing Society:
Asilomar Conference on Signals, Systems and Computers 2013. Vol.3 : Pacific Grove, California, USA, 3 - 6 November 2013
Piscataway, NJ: IEEE, 2013
ISBN: 978-1-4799-2391-5
ISBN: 978-1-4799-2390-8
ISBN: 978-1-4799-2388-5 (Print)
Asilomar Conference on Signals, Systems and Computers <47, 2013, Pacific Grove/Calif.>
Fraunhofer HHI ()

The need for cell densification leads to inter-cell interference mitigation techniques known as coordinated multipoint (CoMP) transmission and reception. In this work, we start from the weighted sum-rate maximization problem by evaluating the capacity of the broadcast channel (BC). We employ non-linear dirty paper coding (DPC) on a cluster basis with additional co-channel interference (CCI) caused from surrounding base stations (BSs). These results characterize the capacity of the BC under cellular propagation conditions. Subsequent, we summarize multi-cell simulation results assuming linear precoding and non-ideal clustering as well as user grouping. For downlink pre-coding we compare the well-studied limited feedback assumption, zero-forcing (ZF) beamforming for joint transmission downlink CoMP and compare their resulting sum-rates with the derived BC capacity.