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Backhaul Prioritized Point-to-Multi-Point Wireless Transmission Using Orbital Angular Momentum Multiplexing

Tomoya KAGEYAMA, Jun MASHINO, Doohwan LEE

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Summary :

Orbital angular momentum (OAM) multiplexing technology is being investigated for high-capacity point-to-point (PtP) wireless transmission toward beyond 5G systems. OAM multiplexing is a spatial multiplexing technique that utilizes the twisting of electromagnetic waves. Its advantage is that it reduces the computational complexity of the signal processing on spatial multiplexing. Meanwhile point-to-multi point (PtMP) wireless transmission, such as integrated access and backhaul (IAB) will be expected to simultaneously accommodates a high-capacity prioritized backhaul-link and access-links. In this paper, we study the extension of OAM multiplexing transmission from PtP to PtMP to meet the above requirements. We propose a backhaul prioritized resource control algorithm that maximizes the received signal-to-interference and noise ratio (SINR) of the access-links while maintaining the backhaul-link. The proposed algorithm features adaptive mode selection that takes into account the difference in the received power of each OAM mode depending on the user equipment position and the guaranteed power allocation of the backhaul capacity. We then evaluate the performance of the proposed method through computer simulation. The results show that throughput of the access-links improved compared with the conventional multi-beam multi-user multi-input multi-output (MIMO) techniques while maintaining the throughput of the backhaul-link above the required value with minimal feedback information.

Publication
IEICE TRANSACTIONS on Communications Vol.E107-B No.1 pp.232-243
Publication Date
2024/01/01
Publicized
2023/09/21
Online ISSN
1745-1345
DOI
10.1587/transcom.2023EBP3058
Type of Manuscript
PAPER
Category
Wireless Communication Technologies

Authors

Tomoya KAGEYAMA
  NTT Network Innovation Laboratories
Jun MASHINO
  NTT Network Innovation Laboratories
Doohwan LEE
  NTT Network Innovation Laboratories

Keyword