Wireless Backhaul Challenging Large-Capacity and High-Speed Transfers

Mobile data traffic is continually increasing. Cisco Systems reported in Cisco Visual Networking Index 2015 that worldwide mobile device connections totaled 7.4 billion in 2014 and are expected to see a 10-fold increase in traffic between 2020 and 2025.Under these circumstances, not only are new technologies required for connecting between mobile devices and base stations, but also increases in the speed and capacity of the supporting back-haul are required too. To achieve this, mobile backhaul systems using wireless (hereafter wireless backhaul) are implementing solutions using modulation multiplexing and band-widening technologies.This document describes the issues for backhaul wireless units used by large-capacity and high-speed microwave and millimeter-wave communications.

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