Optimizing Signal Transmission in a MIMO System Influenced by Antenna Mutual Coupling
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Abstract
This paper is concerned with investigations into an optimal transmission scheme for a single-user Multiple Input Multiple Output (MIMO) system influenced by the antenna mutual coupling. The concept of "coupled power" relying on the transmitting and receiving mutual impedances is introduced. This concept is used to work out an optimal MIMO transmission scheme when a non-negligible mutual coupling between antenna elements exists. Numerical results illustrate that the proposed signal transmission scheme offers extra capacity to the system. A suitable choice of antenna elements separation to obtain an improved MIMO system performance is discussed for the case of a semi-correlated uplink channel.
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