Non-Reciprocity View of the MIMO Antenna Arrays in Transmitting and Receiving Modes Using the Maximized Unique Receiving Pattern Theory Resulted by Angle-Wise Array Factor

Abstract

A new approach to employ MIMO array behavior in system design calculations by distinguishing the transmitting and receiving modes' characteristics is presented. It shows that the conventional array formulation complies merely with the transmitting mode behavior of MIMO arrays, while the newly proposed formulation eases the estimation of the receiving mode behavior by introducing the Angle Wise Array Factor (AWAF). A novel theory of “Non-reciprocity view of transmitting and receiving modes in MIMO arrays” is being discussed along with “Pattern non-uniqueness in transmitting mode” and “Pattern uniqueness in receiving mode” theories. The grating lobe definition is also re-introduced, proposing that this definition is supposed to be reserved merely for transmitting mode.

Keywords

• Angle-wise array factor (AWAF)
• MIMO array
• receiving mode of MIMO systems
• transmitting mode of MIMO systems
• grating lobe