| Abstract |
In this paper, we analyze the Decision Feedback Equalization (DFE) receiver for Layered STBC (LSTBC) based on a MIMO-OFDM platform. LSTBC system combines high spectral efficiency of V-BLAST with transmit diversity of STBC. We analytically show that although the LSTBC doubles the diversity order of each layer in V-BLAST, it increases the computational complexity by approximately 4 folds.
Based on the analysis of the structure of DFE for LSTBC, we propose a simple yet efficient QR decomposition (QRD) algorithm that effectively reduces the computational complexity of the DFE receiver for LSTBC by
half. |