Efficiently Accommodating High-frequency-band Wireless Systems by Using Analog Radio-over-fiber

Abstract

Large-capacity wireless transmission is possible with high-frequency-band wireless systems, but it is necessary to deploy wireless base stations at high density. Under the assumption that the number of wireless systems will increase to meet diversifying needs, the number of wireless base stations to be installed is expected to increase dramatically. At NTT Access Network Service Systems Laboratories, we propose a system configuration that uses analog radio-over-fiber (RoF) technology to enable multiple high-frequency-band wireless systems to share wireless equipment for drastically reducing the number of wireless base stations and their operating loads. This system configuration and its fundamental technology, namely, our remote-beamforming technology, are introduced in this article.

Initiatives Concerning All-Photonics-Network-related Technologies Based on IOWN

“…As an initiative tackling a new optical transmission infrastructure, Topic 1 concerns ultra-high-capacity optical communication technology related to cutting-edge devices and components to increase the capacity of backbone networks by combining wavelength-division multiplexing and spacedivision multiplexing [4]. Topic 2 concerns investigations related to the above network-transport-configuration function to increase the capacity of wireless sections and increasing the degrees of freedom in deploying wireless areas [5]. Topic 3 concerns an optical full-mesh network-configuration technology that provides a transport function with large capacity and low delay [6].…”