A 28GHz Hybrid-Beamforming Transmitter Array Supporting Concurrent Dual Data Steams and Spatial Notch Steering for 5G MIMO
A 28GHz Hybrid-Beamforming Transmitter Array Supporting Concurrent Dual Data Steams and Spatial Notch Steering for 5G MIMO
复制标题
支持 5G MIMO 并发双数据流和空间陷波控制的 28GHz 混合波束成形发射机阵列
DOI：
10.1109/cicc51472.2021.9431464
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Chi, Taiyun
中科院分区：
文献类型：
--
作者：
Hu, Yaolong;Zhang, Xiaohan;Chi, Taiyun
空间复用或多用户MIMO可以通过同时支持多个空间非共置数据流来提高通信吞吐量。GHz处的大多数多用户MIMO TRX基于数字波束成形。然而，随着每个用户的数据速率在毫米波上接近几Gb/s，在数字和高速数模转换中执行动态波束成形权重计算面临着大规模毫米波天线阵列的显著能效瓶颈。或者，混合波束成形可以通过将模拟波束成形与数字预编码相结合来支持少量并发数据流。虽然与全数字处理相比，混合波束成形失去了自由度，但它降低了数字计算复杂度和数模转换链的数量，从而大大提高了能效。
Spatial multiplexing, or multi-user MIMO, can improve the communication throughput by simultaneously supporting multiple spatially non-collocated data streams. Most multi-user MIMO TRXs at GHz are based on digital beamforming. However, as the data rate of each user approaches multi-Gb/s at mmWave, performing dynamic beamforming weights calculation in digital and high-speed digital-to-analog conversion faces a significant energy efficiency bottleneck for large-scale mmWave antenna arrays. Alternatively, hybrid beamforming can support a handful of concurrent data streams by combining analog beamforming with digital precoding. Although hybrid beamforming loses degrees-of-freedom compared to all-digital processing, it reduces digital computation complexity and the number of digital-to-analog conversion chains, resulting in greatly enhanced energy efficiency.
4.4 用于 TDD/FDD 和全双工通信的 28/37GHz 可扩展、可重新配置的多层混合/数字 MIMO 收发器
DOI：
10.1109/isscc19947.2020.9063167
发表时间：
2020
期刊：
IEEE International Solid-State Circuits Conference
影响因子：
--
作者：
Mondal, Susnata;Carley, L. Richard;Paramesh, Jeyanandh
通讯作者：
Paramesh, Jeyanandh