Next generation mm-Wave wireless backhaul based on LOS MIMO links

With the evolution of the mobile networks towards more dense and flexible configurations, novel wireless backhaul solutions that can match the high capacity and flexibility demands are required in addition to the fixed fiber optics solutions. In this work we analyze the core backhaul requirements and the related system design challenges for utilizing the mm-wave frequency band due to the large available bandwidth. We determine the key performance metrics in terms of achievable throughput and energy efficiency of several transmission schemes seeking for a viable solution for the small cell backhaul scenario. Finally, an insight to the structure of the baseband domain required for processing multiple transmitted streams at the full system bandwidth is presented for a proposed LOS SM-MIMO system concept.