Low Power & Reduced Hardware UWB Beamformers for Future 5 G Communications
Low Power & Reduced Hardware UWB Beamformers for Future 5 G Communications
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低电量
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
E. Alwan
中科院分区：
文献类型：
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作者：
J. Volakis;Rimon Hokayem;S. Venkatakrishnan;E. Alwan
提出了一种适用于高速5G技术的新型混合波束形成架构。该体系结构结合了几个新概念，以实现大型天线阵列的显著硬件和成本降低。具体地说，我们采用了现场码分复用方案，将几个天线单元组合到一个模数转换器(ADC)中。这种方法将模拟硬件和电源需求显著降低到原来的1/8到1/32。此外，我们采用了一种新颖的模拟频率无关波束形成方案来完全消除移相器，并允许在模拟前端进行相干合并。这种方法避免了传统的基于移相器的方法，这种方法通常与笨重和低效的组件相关。初步分析表明，对于800个阵元的阵列，与传统的波束形成器系统相比，使用混合波束形成器可以实现高达97%的成本和功率降低。关键词：超宽带、5G、波束形成器、阵列、频率独立、自混合
We present a novel hybrid beamforming architecture for high speed 5G technologies. The architecture combines several new concepts to achieve significant hardware and cost reduction for large antenna arrays. Specifically, we employ an on-site code division multiplexing scheme to group several antenna elements into a single analog-to-digital converter (ADC). This approach significantly reduces analog hardware and power requirements by a factor of 8 to 32. Additionally, we employ a novel analog frequency independent beamforming scheme to eliminate phase shifters altogether and allow for coherent combining at the analog front-end. This approach avoids traditional phase-shifter-based approaches typically associated with bulky and inefficient components. Preliminary analysis shows that for an array of 800 elements, as much as 97% reduction in cost and power is achieved using the hybrid beamformer as compared to conventional beamformer systems. key words: ultra-wideband, 5G, beamformer, arrays, frequency independent, self-mixing