A Novel Coupling-Based Model for Wideband MIMO Channel

In this paper, a novel analytical model structure for wideband multiple-input multiple-output (MIMO) channel is presented. It is based on the power coupling between direction of departure (DoD), direction of arrival (DoA) and delay domain. As its realizations, firstly the singular value decomposition (SVD) based model is introduced and the virtual presentation model is extended to the wideband situation. Then a hybrid model is given on basis of the power coupling between the transmit eigenmodes, receive eigenmodes and frequency steering vectors. The hybrid model can provide the tradeoff between the complexity and accuracy. At last, the novel coupling-based model structure is summarized. With a 3.52 GHz wideband MIMO sounder, measurements are carried out in different indoor scenarios. Monte Carlo simulations are used to generate the channel realizations according to these proposed wideband models. Good agreements are achieved between the discussed models and measured data.