Title :
Software Defined Hybrid MMSE/QRD-M Turbo Receiver for LTE Advanced Uplink on a Cell Processor
Author :
Ibing, Andreas ; Kühling, David ; Wieruch, Dennis ; Boche, Holger
Author_Institution :
Fraunhofer Inst. for Telecommun., Heinrich-Hertz-Inst. (HHI), Berlin, Germany
Abstract :
LTE advanced standardization discusses OFDMA uplink transmission, which allows for different receiver algorithms than the DFT-spread OFDMA uplink in LTE. We present a hybrid MMSE/QRD-M turbo receiver concept for 4times4 MIMO-OFDMA uplink in LTE Advanced, running the complete baseband and decoding functionality on a Cell BE processor. Multi-user MIMO with different modulation levels on the same resources is supported. Complexity and performance of the receiver are evaluated using implementation benchmarks of the signal processing components and simulated bit error rates. The benchmarks show that advanced receiver algorithms can be put into practice on software defined radio architectures.
Keywords :
MIMO communication; OFDM modulation; decoding; error statistics; frequency division multiple access; least mean squares methods; modulation coding; multiuser detection; radio receivers; software radio; tree searching; turbo codes; LTE advanced uplink; OFDMA uplink transmission; bit error rate; cell processor; decoding functionality; modulation level; multiuser MIMO detector; signal processing components; software defined hybrid MMSE-QRD-M turbo receiver; Baseband; Bit error rate; Computer architecture; Decoding; MIMO; Receivers; Signal processing algorithms; Software algorithms; Software radio; Standardization;
Conference_Titel :
Communications Workshops, 2009. ICC Workshops 2009. IEEE International Conference on
Conference_Location :
Dresden
Print_ISBN :
978-1-4244-3437-4
DOI :
10.1109/ICCW.2009.5208028
