IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508

This article has now been updated. Please use the final version.

Joint Transmission Null Beamforming for MIMO Full-Duplex Wireless Communication System
Kotaro NAGANOMasahiro KAWANOYuhei NAGAOHiroshi OCHI
Author information
JOURNAL FREE ACCESS Advance online publication

Article ID: 2022SMP0007

Details
Abstract

Cancellation of self interference (SI) is an important technology in order for wireless communication system devices to perform full-duplex communication. In this paper, we propose a novel self-interference cancellation using null beamforming to be applied entire IEEE 802.11 frame including the legacy part for full-duplex wireless communication on Cooperative MIMO (Multiple Input Multiple Output). We evaluate the SI cancellation amount by the proposed method using a field programmable gate array (FPGA) and software defined radio (SDR), and show the experimental results. In the experiment, it is confirmed that the amount of SI cancellation by the proposed method was at least 18 dB. The SI cancellation amount can be further potentiated with more accurate CSI(channel state information) by increasing the transmission power. It is shown that SI can be suppressed whole frame which includes legacy preamble part. The proposed method can be applied to next generation wireless communication standards as well.

Content from these authors
© 2022 The Institute of Electronics, Information and Communication Engineers
feedback
Top