Microwave photonics self-interference cancellation and frequency down-conversion for distributed full duplex communication systems

Zhe Liu; Dayong Wang; Yunxin Wang; Tianhua Xu; Peihan Li; Feng Yang; Zheng He

doi:10.1117/12.2654827

15 December 2022 Microwave photonics self-interference cancellation and frequency down-conversion for distributed full duplex communication systems

Zhe Liu, Dayong Wang, Yunxin Wang, Tianhua Xu, Peihan Li, Feng Yang, Zheng He

Author Affiliations +

Proceedings Volume 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022); 124783I (2022) https://doi.org/10.1117/12.2654827
Event: Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 2022, Xi'an, China

Abstract

Compared with traditional electrical methods, radio frequency self-interference cancellation (SIC) based on microwave photonic technology has the advantages of large bandwidth, high precision, low loss and anti-electromagnetic interference. For distributed full-duplex communication system, a SIC method based on cascade modulation is studied. The cancellation depth of the system for single-frequency signals is more than 43 dB, and the cancellation depth for wideband signals is more than 22 dB, and the recovered useful signals is obtained. The system adopts cascade modulation, and the isolation degree of LO and RF signal is high. In this scheme, the signal after SIC can be transmitted to the central office through a long fiber. The proposed approach supplies an architecture for distributed systems with both down-conversion and SIC.

Citation Download Citation

Zhe Liu, Dayong Wang, Yunxin Wang, Tianhua Xu, Peihan Li, Feng Yang, and Zheng He "Microwave photonics self-interference cancellation and frequency down-conversion for distributed full duplex communication systems", Proc. SPIE 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 124783I (15 December 2022); https://doi.org/10.1117/12.2654827

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KEYWORDS

Modulation

Silicon

Strontium

Modulators

Microwave photonics

Telecommunications

Quadrature amplitude modulation

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