12x12 MIMO-OFDM Realtime Implementation for 3GPP LTE+ on a Cell Processor

Konferenz: European Wireless 2008 - 14th European Wireless Conference
22.06.2008 - 25.06.2008 in Prague, Czech Republic

Tagungsband: European Wireless 2008

Seiten: 5Sprache: EnglischTyp: PDF

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Kühling, David; Ibing, Andreas; Jungnickel, Volker (Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut, Einsteinufer 37, 10587 Berlin, Germany)

We present a realtime implementation of the timecritical core functions for 12 × 12 MIMO-OFDM (12 data streams) with LTE parameters on a Cell Broadband Engine Processor. An MMSE equalizer matrix update interval of 1 ms (high mobility) is achieved with less than 50% CPU utilization. Concurrent bidirectional processing (precoding and postprocessing) is shown to be feasible with this update rate.