A New Transmission Scheme: Semi-Blind Channel Estimation Combined with Precoding

In this paper, we first introduce the transmission model of MIMO-OFDM. A semi blind estimation method based on noise subspace is proposed to overcome some limitations of blind estimation methods. Then a new transmission scheme is proposed, in which the channel information obtained by blind or semi blind estimation will be used for the precoder. At the end of this paper, the performance of this data transmission scheme is analyzed and discussed, and the parameters, especially the size of the data frame, can be adjusted according to the needs, which can affect the transmission efficiency and delay. Adjusting parameters according to channel conditions and communication requirements is crucial for optimizing the efficiency and robustness of transmission systems.