Fangmin He

Blind SINR Estimation Algorithm Based on Joint Eigenvalue-Steering Vector Decoupling in Non-Cooperative Interference

Yufeng Ma, Fangmin He, Kai Yang, Qing Wang et autres

To address the limitations of traditional Signal-to-Interference-plus-Noise Ratio (SINR) estimation methods under non-cooperative malicious interference, such as their confinement to specific modulation signals and the narrow effective estimation range of Signal-to-Noise Ratio (SNR), this paper proposes an adaptive robust SINR estimation algorithm …

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A Dual-Circularly Polarized STAR Patch Antenna with Enhanced Transmit–Receive Isolation Using a Decoupling Feeding Network

Tao Liu, Fangmin He, Kang Luo, Qing Wang et autres

Simultaneous transmit-and-receive (STAR) antennas are important components of in-band full-duplex wireless front ends. However, transmit-to-receive leakage through the antenna limits the achievable antenna-domain isolation. This paper presents a dual-circularly polarized patch antenna incorporating a decoupling feeding network (DFN) to suppress the residual …

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Soft Threshold Denoising-Based Environmental Adaptive UAV Signal Modulation Recognition for Small-Sample Scenarios

Fang Jin, Yang Shao, Ying He, Zhihao Ye et autres

As a key technology for wireless signal identification, modulation recognition plays an important role in the fields of unmanned aerial vehicle (UAV) communications, low-altitude spectrum management, etc. However, the accuracy of modulation recognition often cannot be guaranteed in scenarios with serious noise …

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A New Design Criterion of Radio Frequency Front-End Gain for Interference Cancellation Performance in Communication Systems

Ze Wang, Fangmin He, Yao Ma, Bin Li et autres

!Adaptive interference cancellation is an effective means to fulfill the anti-interference requirements of communication systems. The radio frequency (RF) front-end gain plays a crucial role since it determines the communication sensitivity and anti-interference performance, especially in the presence of both high-power interference …

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Distortion Control in Self-Interference Cancellation Systems: Residual Signal Analysis and Loop Parameter Optimization

Jiaqi Liang, Y Q Li, Jinling Xing, Yufeng Ma et autres

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Adaptive broadband co-channel interference cancellation method based on spatiotemporal correlation

Jiaqi Liang, Y Q Li, Yufeng Ma, Jinling Xing et autres

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Adaptive Weight Gating: A Performance Enhancement Method for Analog-Digital Cascaded Self-Interference Cancellation

Jiaqi Liang, Yaxing Li, Jinling Xing, Yufeng Ma et autres

With the high-density integration of electronic systems on modern integrated platforms, co-site high-power electromagnetic interference has become a critical bottleneck degrading electromagnetic compatibility of such platforms. Analog-digital cascaded self-interference cancellation (SIC) is widely recognized as a promising solution, but its performance is …

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Optimization and Analysis of Non-ideal Factors for Delay Measurement in Full-duplex Communications

Ze Wang, Fangmin He, Yaxing Li

Delay measurement is a critical technology for measuring the transmission delay of self-interference signals for Full duplex interference suppression. Due to the frequency-dependent fluctuations in wireless channel transmission delay, the delay measurement based on frequency sweep is used to accurately characterize the …

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Mitigating SATCOM Uplink Interference in Large Analog Phased Array via Sidelobe Cancellation

Qing Wang, Kang Luo, Yu Guo, Hao Wu et autres

ABSTRACT Interference mitigation remains a persistent challenge in satellite communication (SATCOM). Especially, a cost‐effective and efficient approach is demanded to full‐fill the 6G vision of ubiquitous coverage with low‐cost satellites. To this aim, we advocate applying sidelobe cancellation (SLC) in combination with …

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Modeling and Analysis of the Impact of RF Receiver Front-End Linearity on Wideband Noncooperative Interference Cancellation Performance

Zejun Hu, Fangmin He, Jinling Xing, Ke Chen et autres

In this paper, we study the impact of system linearity on interference cancellation performance in a broadband noncooperative scenario. A theoretical model is developed to analyze the broadband cancellation performance considering the nonlinearity of the receiving link. Based on the minimum mean …

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Multi-Tap Self-Interference Cancellation Based on Joint Time-Frequency Domain Channel Measurement in Time-Varying Channel

Ze Wang, Fangmin He, Jiaqi Liang, Yi Li et autres

The increasing demand for more integrated communication systems results in complex radio-frequency environments. Due to the space limitation, communication receivers are extremely vulnerable to being blocked by high-power self-interference (SI) from the transmitter on the shared platform. The multipath amplitude and delay …

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Evaluation of enterprise-level transformation performance in power industry based on BAS-BP neural network

Guangcai Wu, Yinglong Zheng, Xin Yan Li, Fangmin He et autres

The power industry is undergoing rapid change. Under the multiple effects of policy orientation, market demand and technological innovation, a new round of power industry reform is on the verge. Based on the analysis of the changes in the power industry under …