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Coordinated multipoint trials in the downlink

: Jungnickel, V.; Thiele, L.; Wirth, T.; Haustein, T.; Schiffermüller, S.; Forck, A.; Wahls, S.; Jäckel, S.; Schubert, S.; Gabler, H.; Juchems, C.; Luhn, F.; Zavrtak, R.; Droste, H.; Kadel, G.; Kreher, W.; Müller, J.; Störmer, W.; Wannemacher, G.


Institute of Electrical and Electronics Engineers -IEEE-; IEEE Communications Society:
IEEE Global Communications Conference, GLOBECOM 2009 : Honolulu, HI, US, 30 Nov-4 Dec, 2009
Piscataway: IEEE, 2009
ISBN: 978-1-4244-5626-0
ISBN: 978-1-4244-4147-1
ISBN: 978-1-4244-4148-8
7 pp.
Global Telecommunications Conference (GLOBECOM) <2009, Honolulu/Hawaii.>
Conference Paper
Fraunhofer HHI ()

Coordinated multi-point (CoMP) is a new class of transmission schemes for interference reduction in the next generation of mobile networks. We have implemented and tested a distributed CoMP transmission approach in the downlink of an LTE-Advanced trial system operating in real time over 20 MHz bandwidth. Enabling features such as network synchronization, cell- and user-specific pilots, feedback of multicell channel state information and synchronous data exchange between the base stations have been implemented. Interference-limited transmission experiments have been conducted using optimum combining with interference-aware link adaptation and cross-wise interference cancellation between the cells. The benefits of CoMP transmission have been studied over multi-cell channels recorded in an urban macro-cell scenario.