Toeplitz channel matrix decomposition with vectorization for very large-scale MIMO

Due to enormous number of user and limited memory space, the memory savings is become an important issue for big data service these days. In the large scale multiple-input multiple-output(known as Massive MIMO) system, the Teoplitz channel can play the significance rule to improve the performance as well as power efficiency. In this paper, we propose a Toeplitz channel decomposition based on matrix vectorization. Here we use Toeplitz matrix to the channel for large scale MIMO system.