Abstract

In this paper, we study the degrees of freedom (DoF) of partially-connected symmetrically-configured multi-input-multi-output interference broadcast channel (MIMO-IBC) and the impact of partial connectivity on the DoF. We investigate the information theoretic maximal DoF and maximal DoF achieved by linear interference alignment (IA) for the symmetrically-connected symmetrically-configured MIMO-IBC, and prove that the DoF are achievable by asymptotic IA and linear IA for the asymmetrically-connected symmetrically-configured network when the maximal number of interfering cells seen at each BS and each user (denoted as the degrees of connectivity) is bounded. We find that for the symmetrically-connected symmetrically-configured MIMO-IBC, the maximal achievable DoF are independent of the number of total cells but depend on the degrees of connectivity. When the degrees of connectivity decrease, the maximal DoF achieved by linear IA are close to the information theoretic maximal DoF.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.