Abstract

Microwave photonic channelized receiver can break through the electronic bottleneck, improve the throughput of satellite payload, and is expected to be widely used in broadband satellite communications. To solve the self-interference problem in the full-duplex satellite relay system, a microwave photonic channelized receiver with a self-interference cancellation (SIC) function is proposed in this paper. The equal interval division of broadband radio frequency (RF) signals is realized through polarization multiplexing technology and optical frequency shifting technology. In addition, by constructing a reference interference signal and matching the delay and amplitude in the optical domain, the self-interference signal is eliminated to avoid the receiver blockage caused by interference leakage. Theoretical derivation and experiment research are carried out, and a wideband signal with 3-GHz bandwidth is down-converted to six sub-channels with a frequency range of 0.5 GHz–1 GHz. Under the single-tone test, the isolation between sub-channels exceeds 31 dB, and the SIC depth exceeds 40 dB. When the sub-channels carry the 16quadrature amplitude modulation (QAM) signals with the bandwidth of 50 MHz, the SIC depth over 26 dB is achieved, and the error vector magnitude (EVM) is 7.6%. Under the two-tone test, the SFDR of the sub-channel is 93.5 dB.Hz^2/3.

Microwave photonic dispersion immune self-interference cancellation scheme for a radio over fiber based in-band full duplex communication link

He Li, Zihang Zhu, Congrui Gao, Guodong Wang, Tao Zhou, Xuan Li, Qingqing Meng, Yixiao Zhou, and Shanghong Zhao
J. Opt. Commun. Netw. 15(9) 579-587 (2023)

Integrated photonic RF self-interference cancellation on a silicon platform for full-duplex communication

Xiuyou Han, Xinxin Su, Meng Chao, Xindi Yang, Weiheng Wang, Shuangling Fu, Yicheng Du, Zhenlin Wu, and Mingshan Zhao
Photon. Res. 11(10) 1635-1646 (2023)

Experimental study of wideband in-band full-duplex communication based on optical self-interference cancellation

Yunhao Zhang, Shilin Xiao, Yinghong Yu, Cao Chen, Meihua Bi, Ling Liu, Lu Zhang, and Weisheng Hu
Opt. Express 24(26) 30139-30148 (2016)

Broadband photonic-assisted microwave receiver with high cross-channel interference suppression and image rejection

Shengkang Zeng, Jiejun Zhang, Lingzhi Li, Ruiqi Zheng, Yiran Guan, Jingxu Chen, Yu Qiao, Qiulin Zhang, and Jianping Yao
Opt. Express 31(10) 16833-16844 (2023)

Photonic-based analog and digital RF self-interference cancellation with high spectral efficiency

Taixia Shi, Moxuan Han, and Yang Chen
Appl. Opt. 60(33) 10299-10304 (2021)