Comparison of digital signal processing approaches for subcarrier multiplexed 5G and beyond analog fronthaul

Abstract

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Computer-aided design for analog wireless fronthaul of B5G cellular communication systems

“…In addition, the microwave-photonics (MWP) technology [15] is promising for designing the equipment for the RUs of the millimeter and sub-millimeter ranges, in which the updated 5G and new beyond 5G (B5G) MFH networks will operate. [12,13 and the references therein] and Internet communications referred to the latest developments in the field of 5G NR allows us to conclude that for today, world equipment manufacturers have fully mastered the FR1 compatible with 4G LTE and partially the FR2, mainly in its lower sub-band. In its upper part of far beyond 40 GHz, the network and user equipment has received the greatest development, providing wireless communications only with fixed network users.…”

“…Since the maximum user data rate in 5G systems is assumed to be 20 Gbps [10], this interface seems to be unsustainable in 5G NR systems in their current form. To solve this problem, a so-called functional split of the BS configuration was recently standardized into the next generation RAN (NG-RAN) with the introduction of newer functional blocks, such as a Central Unit (CU), a Distributed Unit (DU), and a Radio Unit (RU) instead of a BBU and RRH [11][12][13].…”