Digital Self-Interference Cancellations Addressing Radio-Frequency Impairments for In-Band Full Duplex

被引：1

作者：

Miyaji, Yuichi ^{[1
]}

Komatsu, Kazuki ^{[2
]}

Uehara, Hideyuki ^{[2
]}

机构：

[1] Aichi Inst Technol, Dept Elect & Elect Engn, Toyota 4700392, Japan

[2] Toyohashi Univ Technol, Dept Elect & Elect Informat Engn, Toyohashi 4418580, Japan

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2024年 / E107B卷 / 12期

关键词：

in-band full duplex; digital self-interference cancellations; radio-frequency impairments; parallel Hammerstein models; orthogonal frequency division multiplexing; POLYNOMIALS; IMBALANCE;

D O I：

10.23919/transcom.2024CEI0004

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In-band full duplex requires digital self-interference cancellations (SICs). However, digital SICs are significantly challenged due to radio-frequency (RF) impairments. We have proposed several designs and analyses of digital SIC based on parallel Hammerstein models addressing RF impairments. Our proposed designs and analyses use orthogonal frequency division multiplexing in the Hammerstein SICs. Moreover, we have developed a testbed to evaluate the Hammerstein and our proposed SICs. Our experimental results showed that the self-interference cancellation ratio was 48.1 dB for one of the Hammerstein SICs. This paper reveals that our canceler designs and theoretical analyses can improve the Hammerstein SICs.

引用

页码：882 / 889

页数：8

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