A Full-FoV Autonomous Hybrid Beamformer Array With Unknown Blockers Rejection and Signals Tracking for Low-Latency 5G mm-Wave Links
A Full-FoV Autonomous Hybrid Beamformer Array With Unknown Blockers Rejection and Signals Tracking for Low-Latency 5G mm-Wave Links
复制标题
具有未知阻塞抑制和信号跟踪功能的全视场自主混合波束形成器阵列，适用于低延迟 5G 毫米波链路
DOI：
10.1109/tmtt.2019.2906602
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发表时间：
2019
影响因子：
4.3
通讯作者：
Hua Wang
中科院分区：
文献类型：
--
作者：
Min;T. Chi;Fei Wang;Tso;Hua Wang
本文提出了一种具有自主毫米波/射频前端波束形成和数字基带波束形成的八单元多输入多输出（MIMO）混合波束形成接收机阵列。它能够自主动态抑制未知的阻塞和波束形成的未知的期望信号，而不知道他们的载波频率，到达角（AoA），调制方案作为先验。在带内/同信道宽带调制阻塞信号自动消除后，宽带调制的期望信号在高SNR下测量，6 Gb/s 64 QAM的EVM为−25.7 dB，1.6 Gb/s 256 QAM的EVM为−31.8 dB。在没有基带DSP波束搜索的情况下，闭环毫米波/RF前端波束形成器（BF）实现了每级<1-<inline-formula><tex-math notation="LaTeX">$\mu \text{s}$</tex-math></inline-formula>的快速响应，比现有的具有DSP波束搜索的毫米波模拟/数字BF快100到<inline-formula><tex-math notation="LaTeX">1000倍</tex-math></inline-formula>。八单元MIMO接收器阵列覆盖宽频率范围（23-30 GHz）和全视场（FoV），以解决实际5G MIMO系统的未来低延迟应用。据我们所知，这是第一个MIMO接收器阵列，支持自主宽带调制64-/256 QAM阻塞抑制和期望的信号波束成形，响应时间为<inline-formula><tex-math notation="LaTeX">$\mu \text{s}$</tex-math></inline-formula>。
This paper demonstrates an eight-element multiple-input-multiple-output (MIMO) hybrid beamforming receiver array with autonomous millimeter-wave (mm-Wave)/RF front-end beamforming and digital baseband beamforming. It enables autonomous dynamic suppression of unknown blockers and beamforming on unknown desired signals, without knowing their carrier frequency, angle-of-arrival (AoA), and modulation scheme as a priori. After autonomous cancellation of an in-band/cochannel wideband-modulated blocker, a wideband-modulated desired signal is measured with high SNR, achieving −25.7-dB EVM for 6-Gb/s 64 QAM and −31.8-dB EVM for 1.6-Gb/s 256 QAM. Without baseband DSP beam-searching, the closed-loop mm-Wave/RF front-end beamformer (BF) realizes <1-<inline-formula> <tex-math notation="LaTeX">$\mu \text{s}$ </tex-math></inline-formula> rapid response per stage, 100-to-<inline-formula> <tex-math notation="LaTeX">$1000\times $ </tex-math></inline-formula> faster than existing mm-Wave analog/digital BFs with DSP beam-searching. The eight-element MIMO receiver array covers a wide frequency range (23–30 GHz) and the full field-of-view (FoV) to address future low-latency applications of practical 5G MIMO systems. To the best of our knowledge, this is the first MIMO receiver array enabling autonomous wideband-modulated 64-/256-QAM blocker rejection and desired signal beamforming with <inline-formula> <tex-math notation="LaTeX">$\mu \text{s}$ </tex-math></inline-formula> response time.