A Compact Full-Duplex Receiver with Wideband Multi-Domain Hilbert-Transform-Equalization Cancellation Based on Multi-Stage APFs Achieving 65dB SIC Across 120MHz BW

📋 论文概要

本文提出了一种紧凑型全双工接收机，采用宽带多域希尔伯特变换均衡抵消技术，以解决自干扰抵消中延迟与带宽乘积的矛盾。在要求超过30dB抵消深度时，实现了比现有方案（<80MHz）更宽的信号带宽。

💡 主要创新点

• 提出多域希尔伯特变换均衡抵消方法，在多个域（如时域、频域）联合优化自干扰抵消。
• 通过紧凑型设计，在宽信号带宽下保持高抵消深度，突破延迟-带宽积限制。

🏷 关键词

📄 原文摘要

efficiency, selfinterference-cancellation (SIC) techniques have received great attention to break through the main bottleneck caused by SI signals. The main issue of SIC techniques is how to broaden product of delay and bandwidth (DBW), which are two conflicting metrics to simultaneously get high self-interference-cancellation depth over wide signal bandwidth for an FD receiver. [1-10] show that the cancellation BWs of most existing SI cancellers are less than 80MHz under the demand of over 30dB cancellation due to limited-delay BWs and resolutions, while the canceller based on frequency-domain equalization (FDE) [11] realizing 120MHz cancellation requires multiple widely-tunable power-hungry high-Q filters with serious noise-figure (NF) degradation, and none of the above techniques support wideband

👥 作者与机构

Xingyu Ma, Wei Li, Shijiao Dong, Ruiyu Lyu, Fan Chen, Yunyou Pu,

Chuangguo Wang , Hongtao Xu Fudan University, Shanghai, China Motivated by the ability of full-duplex (FD) systems to double spectrum