volume | PIER Journals

Abstract

The impedance matching problem in the presence of signal and noise coupling in compact MIMO arrays is addressed. By maximizing an upper bound of the ergodic capacity for an N×N MIMO system with signal and noise coupling at the receiver in high signal-to-noise ratio (SNR) scheme, a set of equations is formulated to find the optimal matching circuit. A closed-form result for the optimum matching circuit is given. For two-element arrays, we show numerically that significant performance improvement can be achieved by introducing the optimal matching.

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Dr. Wen-Fong Tsen

Professor Hsueh-Jyh Li