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12 × 12 MIMO-OFDM realtime implementation for 3GPP LTE+ on a cell processor

 
: Kuhling, D.; Ibing, A.; Jungnickel, V.

:

European wireless 2008. Electronic proceedings. CD-ROM : 14th European Wireless Conference 2008, 22 - 25 June 2008, Prague, Czech Republic
Berlin: VDE Verlag, 2008
ISBN: 978-3-8007-3102-2
ISBN: 978-1-4244-3120-5 (Print)
S.448-452
European Wireless Conference (EW) <14, 2008, Praha>
Englisch
Konferenzbeitrag
Fraunhofer HHI ()
3G mobile communication; equaliser; least-mean-squares method; matrix algebra; microprocessor chips; mimo communication; ofdm modulation

Abstract
We present a realtime implementation of the time-critical 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.

: http://publica.fraunhofer.de/dokumente/N-84083.html