Title :
Performance Evaluation of Two LMMSE Detectors in a MIMO-OFDM Hardware Testbed
Author :
Myllylä, Markus ; Juntti, Markku ; Limingoja, Matti ; Byman, Aaron ; Cavallaro, Joseph R.
Author_Institution :
Centre for Wireless Commun., Univ. of Oulu, Oulu
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
The performance of two field programmable gate array (FPGA) implementations of a linear minimum mean square error (LMMSE) based detector is evaluated in realtime radio channels. Two square root free algorithms based on the QR decomposition (QRD) via Givens rotations, namely coordinate rotation digital computer (CORDIC) and squared Givens rotation (SGR) algorithms, are applied for the LMMSE detector implementation with pipelined systolic array architectures. The implementations are mapped to Elektrobit 2times2 multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) hardware testbed for 4G MIMO systems (EB4G). The presented measurement results are done with a Propsim C8 MIMO channel emulator and compared to the simulated results.
Keywords :
MIMO communication; OFDM modulation; field programmable gate arrays; least mean squares methods; signal detection; wireless channels; CORDIC; FPGA; LMMSE detector; MIMO-OFDM hardware testbed; QR decomposition; coordinate rotation digital computer; field programmable gate array; linear minimum mean square error; multiple-input multiple-output hardware testbed; orthogonal frequency division multiplexing; performance evaluation; pipelined systolic array architecture; realtime radio channel; squared Givens rotation; Computer architecture; Detectors; Field programmable gate arrays; Hardware; MIMO; Mean square error methods; OFDM; Sensor arrays; Systolic arrays; Testing;
Conference_Titel :
Signals, Systems and Computers, 2006. ACSSC '06. Fortieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
1-4244-0784-2
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2006.354937
