SDD-MIMO: Ubiquitous Embedded MIMO for Community Broadband

Abstract

Multi-user and massive or large-scale MIMO have proven very effective customer access technologies for serving multiple users on the same frequency resource. However the technological cost and complexity of large scale cellular deployments to sparsely populated areas makes them unsuitable for deployment by individuals or the communities themselves. In this paper we investigate an alternative approach to large scale MIMO deployment in which a huge network of private, singleantenna radios forms a customer access network by coordination over existing back-haul. Such a network increases its range and aggregate capacity in proportion to the number of units deployed on a private basis. In this paper we consider the physical issues of base station size, spectrum availability, terrestrial propagation, capacity, range and power scaling that must be solved to make such a network a reality.