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.
Hayato FUKUZONO
NTT Corporation
Keita KURIYAMA
NTT Corporation
Masafumi YOSHIOKA
NTT Corporation
Toshifumi MIYAGI
NTT Corporation
Takeshi ONIZAWA
NTT Corporation
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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 -