Title :
Iterative soft-QRD-M for turbo coded MIMO-OFDM systems
Author :
Kim, Kyeong Jin ; Reid, Tony ; Iltis, Ronald A.
Author_Institution :
Nokia Inc., Irving, TX
fDate :
7/1/2008 12:00:00 AM
Abstract :
We propose an iterative soft detection algorithm based on the QR decomposition and M-algorithm (soft-QRD- M) for MIMO-OFDM incorporating error correction coding. The soft-QRD-M step generates approximate a posteriori probabilities (APPs) with significant computational savings over the optimal sum-product algorithm. Simulation results show comparable performance of the soft-QRD-M detector and SPA in a Turbo- coded iterative MIMO-OFDM receiver.
Keywords :
MIMO communication; OFDM modulation; error correction codes; iterative decoding; probability; turbo codes; QR decomposition; error correction codes; iterative soft detection algorithm; iterative soft-QRD M-algorithm; optimal sum-product algorithm; posteriori probability approximation; turbo coded MIMO-OFDM system; Convolutional codes; Detection algorithms; Detectors; Intersymbol interference; Iterative algorithms; Iterative decoding; Iterative methods; Matrix decomposition; Sum product algorithm; Turbo codes;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2008.040666
