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This paper proposes a scheme that reduces residual self-interference significantly in the analog-circuit domain on wireless full-duplex relay systems. Full-duplex relay systems utilize the same time and frequency resources for transmission and reception at the relay node to improve spectral efficiency. Our proposed scheme measures multiple responses of the feedback path by changing the direction of the main beam of the transmitter at the relay, and then selecting the optimal direction that minimizes the residual self-interference. Analytical residual self-interference is derived as the criterion to select the optimal direction. In addition, this paper considers the target of residual self-interference power before the analog-to-digital converter (ADC) dependent on the dynamic range in the analog-circuit domain. Analytical probability that the residual interference exceeds the target is derived to help in determining the number of measured responses of the feedback path. Computer simulations validate the analytical results, and show that in particular, the proposed scheme with ten candidates improves the residual self-interference by approximately 6dB at the probability of 0.01 that the residual self-interference exceeds target power compared with a conventional scheme with the feedback path modeled as Rayleigh fading.

- Publication
- IEICE TRANSACTIONS on Communications Vol.E106-B No.5 pp.470-477

- Publication Date
- 2023/05/01

- Publicized
- 2022/11/11

- Online ISSN
- 1745-1345

- DOI
- 10.1587/transcom.2022EBP3073

- Type of Manuscript
- PAPER

- Category
- Wireless Communication Technologies

Hayato FUKUZONO

NTT Corporation

Keita KURIYAMA

NTT Corporation

Masafumi YOSHIOKA

NTT Corporation

Toshifumi MIYAGI

NTT Corporation

Takeshi ONIZAWA

NTT Corporation

The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.

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Hayato FUKUZONO, Keita KURIYAMA, Masafumi YOSHIOKA, Toshifumi MIYAGI, Takeshi ONIZAWA, "Analog-Circuit Domain Cancellation with Optimal Feedback Path Selection on Full-Duplex Relay Systems" in IEICE TRANSACTIONS on Communications,
vol. E106-B, no. 5, pp. 470-477, May 2023, doi: 10.1587/transcom.2022EBP3073.

Abstract: This paper proposes a scheme that reduces residual self-interference significantly in the analog-circuit domain on wireless full-duplex relay systems. Full-duplex relay systems utilize the same time and frequency resources for transmission and reception at the relay node to improve spectral efficiency. Our proposed scheme measures multiple responses of the feedback path by changing the direction of the main beam of the transmitter at the relay, and then selecting the optimal direction that minimizes the residual self-interference. Analytical residual self-interference is derived as the criterion to select the optimal direction. In addition, this paper considers the target of residual self-interference power before the analog-to-digital converter (ADC) dependent on the dynamic range in the analog-circuit domain. Analytical probability that the residual interference exceeds the target is derived to help in determining the number of measured responses of the feedback path. Computer simulations validate the analytical results, and show that in particular, the proposed scheme with ten candidates improves the residual self-interference by approximately 6dB at the probability of 0.01 that the residual self-interference exceeds target power compared with a conventional scheme with the feedback path modeled as Rayleigh fading.

URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2022EBP3073/_p

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@ARTICLE{e106-b_5_470,

author={Hayato FUKUZONO, Keita KURIYAMA, Masafumi YOSHIOKA, Toshifumi MIYAGI, Takeshi ONIZAWA, },

journal={IEICE TRANSACTIONS on Communications},

title={Analog-Circuit Domain Cancellation with Optimal Feedback Path Selection on Full-Duplex Relay Systems},

year={2023},

volume={E106-B},

number={5},

pages={470-477},

abstract={This paper proposes a scheme that reduces residual self-interference significantly in the analog-circuit domain on wireless full-duplex relay systems. Full-duplex relay systems utilize the same time and frequency resources for transmission and reception at the relay node to improve spectral efficiency. Our proposed scheme measures multiple responses of the feedback path by changing the direction of the main beam of the transmitter at the relay, and then selecting the optimal direction that minimizes the residual self-interference. Analytical residual self-interference is derived as the criterion to select the optimal direction. In addition, this paper considers the target of residual self-interference power before the analog-to-digital converter (ADC) dependent on the dynamic range in the analog-circuit domain. Analytical probability that the residual interference exceeds the target is derived to help in determining the number of measured responses of the feedback path. Computer simulations validate the analytical results, and show that in particular, the proposed scheme with ten candidates improves the residual self-interference by approximately 6dB at the probability of 0.01 that the residual self-interference exceeds target power compared with a conventional scheme with the feedback path modeled as Rayleigh fading.},

keywords={},

doi={10.1587/transcom.2022EBP3073},

ISSN={1745-1345},

month={May},}

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TY - JOUR

TI - Analog-Circuit Domain Cancellation with Optimal Feedback Path Selection on Full-Duplex Relay Systems

T2 - IEICE TRANSACTIONS on Communications

SP - 470

EP - 477

AU - Hayato FUKUZONO

AU - Keita KURIYAMA

AU - Masafumi YOSHIOKA

AU - Toshifumi MIYAGI

AU - Takeshi ONIZAWA

PY - 2023

DO - 10.1587/transcom.2022EBP3073

JO - IEICE TRANSACTIONS on Communications

SN - 1745-1345

VL - E106-B

IS - 5

JA - IEICE TRANSACTIONS on Communications

Y1 - May 2023

AB - This paper proposes a scheme that reduces residual self-interference significantly in the analog-circuit domain on wireless full-duplex relay systems. Full-duplex relay systems utilize the same time and frequency resources for transmission and reception at the relay node to improve spectral efficiency. Our proposed scheme measures multiple responses of the feedback path by changing the direction of the main beam of the transmitter at the relay, and then selecting the optimal direction that minimizes the residual self-interference. Analytical residual self-interference is derived as the criterion to select the optimal direction. In addition, this paper considers the target of residual self-interference power before the analog-to-digital converter (ADC) dependent on the dynamic range in the analog-circuit domain. Analytical probability that the residual interference exceeds the target is derived to help in determining the number of measured responses of the feedback path. Computer simulations validate the analytical results, and show that in particular, the proposed scheme with ten candidates improves the residual self-interference by approximately 6dB at the probability of 0.01 that the residual self-interference exceeds target power compared with a conventional scheme with the feedback path modeled as Rayleigh fading.

ER -