On the Degrees of Freedom of the Three-User MIMO Interference Channel with Delayed CSIT

Abstract

However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this works must be obtained from the IEEE. On the Degrees of Freedom of the Three-User MIMO Interference Channel with Delayed CSIT Alexey Buzuverov, Hussein Al-Shatri, and Anja Klein Abstract-The three-user multiple-input multiple-output interference channel under i.i.d. fading is studied, where the transmitters have the delayed channel state information. The case where all transmitters and all receivers are equipped with M and N antennas, respectively, is considered. For this case, a new transmission scheme is proposed that achieves a number of degrees of freedom higher than previously reported for the range of 3/4 < M/N < 1, where the parameters of the scheme are determined as functions of the ratio M/N . The degrees of freedom gains compared to the previous approaches are due to the more effective use of transmit and receive antennas