QRD-Based Precoded MIMO-OFDM Systems with Reduced Feedback

QR decomposition (QRD)-based precoded MIMO-OFDM systems with reduced feedback are proposed to convert the MIMO-OFDM channel into layered subchannels. QRD-M is further combined with either value (SVD) or geometric mean decomposition (GMD) of the time-domain channel impulse response matrix. As a result, the receiver in the proposed systems only needs to feed back information describing one precoding matrix for all carriers. Simulation results confirm the bit-error-rate (BER) and throughput performance superiority of the proposed systems compared to conventional SVD per-carrier precoding schemes. IEEE Transactions On Communications This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonprofit educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of Mitsubishi Electric Research Lab...

• Type: Conference
• Year: 2008
• Where: ICC
• Authors: Kyeong Jin Kim, Man-On Pun, Ronald A. Iltis
• Keywords: Communications, Electric Research Laboratories, Geometric Mean Decomposition, ICC 2008, Mitsubishi Electric Research