Channel Estimation for Compound Field Extensive Massive MIMO

Abstract

Extensive Massive MIMO (Multiple Input, Multiple Output) has the potential to satisfy the high data rate needs of future 6G. In order to get effective precoding, accurate information about the channel's current condition is critical. Existing Low pilot overhead estimate approaches strongly depend on attained angular domain channel sparsity based on plane wave front in the far field (FF) and polar domain channel sparsity based on spherical wave front in the near field (NF). In practical scenario some scatterers are present in FF region and some are present in NF. However FF as well as NF schemes for estimating the channel is not enough to find out the combined field Extensive Massive MIMO channel. An effective combined field approach for predicting the Extensive Massive MIMO channel is proposed in order to overcome this difficulty. Results from simulations reveal that the suggested approach is more efficient than the current one.