Influence of Mutual Coupling on the Transmission Strategy Design for MIMO Correlated Rayleigh Fading Channels
Source: Cyber Journals
The influence of mutual coupling among Multiple Input Multiple Output antenna (MIMO) systems is usually not negligible due to limited antenna spacing available in practice. A thorough understanding of such influence, however, is not available in the literature, although it is important to the design of a transmission strategy. In this paper, by formulating the equivalent channel matrix in terms of S-parameters that characterize mutual coupling, the authors obtain an explicit expression for the channel capacity. The maximization of the channel capacity so obtained leads to the optimal pre-coding strategy for the transmitter.