Least Square Channel Estimation for Two-Way Relay MIMO OFDM Systems
Zhaoxi Fang · ETRI Journal · 2011
This letter considers the channel estimation for two-way relay MIMO OFDM systems. A least square (LS) channel estimation algorithm under block-based training is proposed. The mean square error (MSE) of the LS channel estimate is computed, and the optimal training sequences with respect to this MSE are derived. Some numerical examples are presented to evaluate the performance of the proposed channel estimation method.