A Reconfigurable 28/37GHz Hybrid-Beamforming MIMO Receiver with Inter-Band Carrier Aggregation and RF-Domain LMS Weight Adaptation

📋 论文概要

本文提出一种可重构的28/37GHz混合波束赋形MIMO接收机，支持单频段多流MIMO和双频段载波聚合模式，通过全连接架构最大化孔径利用率，并采用数字可编程RF波束赋形权重实现灵活控制。

💡 主要创新点

• 提出三种可配置工作模式：28GHz单频段多流、37GHz单频段多流以及28/37GHz双频段单流载波聚合模式，实现多场景灵活应用。
• 实现从每个天线输入到每个输出流的全连接架构，最大化孔径利用率，提升MIMO性能。
• 采用数字可编程RF波束赋形权重，通过外部串行接口控制，增强系统可重构性。

🏷 关键词

📄 原文摘要

This paper presents a hybrid beamforming mm-wave MIMO receiver with two key innovations. First, it can be configured into three modes: two single-band multistream modes at 28 or 37 GHz that can support single- or multi-user MIMO, and a concurrent 28 and 37GHz dual-band single-stream phased-array inter-band carrier-aggregation mode. In all modes, the receiver features full connectivity from each antenna element input to each output stream, thereby maximizing usage of the available aperture. Second, the digitally programmable RF beamforming weights can be controlled by an external serial interface, or by an on-chip “oneport” mixed-signal adaptation loop that implements a technique that we call double-sampling time-multiplexed LMS (DS-TM-LMS). Unlike conventional LMStype adaptation algorithms that require access to the individual array inputs and the combined output, and are therefore not easily amenable to a hybrid

👥 作者与机构

Susnata Mondal, Rahul Singh, Jeyanandh Paramesh

Carnegie Mellon University, Pittsburgh, PA