21.3 A Reconfigurable Bidirectional 28/37/39GHz Front-End Supporting MIMO-TDD, Carrier Aggregation TDD and FDD/Full-Duplex with Self-Interference Cancellation in Digital and Fully Connected Hybrid Beamformers

2019 IEEE International Solid- State Circuits Conference - (ISSCC) Pub Date : 2019-02-01 DOI:10.1109/ISSCC.2019.8662468

Susnata Mondal, Rahul Singh, J. Paramesh

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引用次数: 29

Abstract

This paper presents a 28/37/39GHz front-end applicable to beyond-5G wireless networks. It features three key contributions. First, a fully connected (FC) transmitter architecture is introduced for hybrid beamforming (HBF); it is shown that the power efficiency of FC-HBF is superior to the conventional partially connected (PC) HBF for a given modulation and antenna geometry. Second, a compact/low-cost circuit concept is introduced that supports bi-directional T/R operation concurrently at 28 and 37/39GHz, thereby facilitating multi-antenna carrier-aggregation (CA) or MIMO TDD with high antenna count. Third, a built-in mechanism for dual-band, per antenna, self-interference cancellation (SIC) is introduced, thanks to the FC-HBF architecture. The front-end is applicable to FDD or full-duplex (FD) multi-antenna systems; such SIC is not available in PC-HBF’s. Also, the front-end is directly applicable to dual-band digital beamformers (DBF).

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21.3数字和全连接混合波束形成器中支持MIMO-TDD、载波聚合TDD和FDD/全双工自干扰消除的可重构双向28/37/39GHz前端

本文提出了一种适用于超5g无线网络的28/37/39GHz前端。它有三个主要贡献。首先，介绍了用于混合波束形成(HBF)的全连接(FC)发射机架构;在给定的调制和天线几何形状下，FC-HBF的功率效率优于传统的部分连接(PC) HBF。其次，引入了一种紧凑/低成本的电路概念，支持28 ghz和37/39GHz的双向T/R操作，从而促进了多天线载波聚合(CA)或高天线数的MIMO TDD。第三，由于FC-HBF架构，引入了内置的双频单天线自干扰消除机制(SIC)。前端适用于FDD或全双工(FD)多天线系统;这种SIC在PC-HBF中是不可用的。此外，前端直接适用于双频数字波束形成器(DBF)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE International Solid- State Circuits Conference - (ISSCC)

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