A Scalable 0.1-to-1.7GHz Spatio-SpectralFiltering 4-Element MIMO Receiver Array with Spatial Notch Suppression Enabling Digital Beamforming

📋 论文概要

该论文提出了一种可扩展的0.1-1.7GHz空谱滤波4元素MIMO接收器阵列，通过空间陷波抑制技术解决了多天线接收器中ADC动态范围受限的问题，实现了灵活的数字波束成形和MIMO支持。

💡 主要创新点

• 提出空谱滤波技术，在射频/模拟域同时进行空间和频谱滤波，提升干扰抑制能力。
• 实现空间陷波抑制，能够自适应地抑制特定方向的空间干扰，增强接收器动态范围。
• 设计可扩展的4元素MIMO接收器阵列架构，支持0.1-1.7GHz宽频带操作，兼顾灵活性和性能。

🏷 关键词

📄 原文摘要

Oregon State University, Corvallis, OR 1 2 Multiple-antenna receivers offer numerous advantages over single-antenna receivers, including sensitivity improvement, ability to reject interferers spatially and enhancement of data-rate or link reliability via MIMO. In the recent past, RF/analog phased-array receivers have been investigated [1-4]. On the other hand, digital beamforming offers far greater flexibility, including ability to form multiple simultaneous beams, ease of digital array calibration and support for MIMO. However, ADC dynamic range is challenged due to the absence of spatial interference rejection at RF/analog. In this paper, a scalable spatio-spectral-filtering 4-element multi-in-multi-out (MIMO) receiver array is presented that combines the benefits of digital beamforming with interference rejection through RF and analog spatial notch suppression and well-established tunable RF spectral bandpass filtering. Each

👥 作者与机构

Linxiao Zhang1, Arun Natarajan2, Harish Krishnaswamy1

Columbia University, New York, NY,