A Power Efficient Technique for Double Layer Massive MIMO Schemes

Afonso Ferreira, Guilherme Gaspar, P. Montezuma, R. Dinis, D. Jayakody
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引用次数: 1

Abstract

Next generation of mobile communication systems must support astounding data traffic increases, higher data rates and lower latency, among other requirements. All these requirements should be met while assuring energy efficiency for mobile devices and base stations. Most likely, the future 5G systems will include massive MIMO (Multiple Input Multiple Output) schemes with dozen or hundreds of antennas enabling beamforming while operating in the millimeter wave spectrum. As soon as the millimetric wave propagation difficulties are overcome, the full potential of massive MIMO structures can be tapped. This paper presents a transmission system with bi-dimensional antenna arrays, based on a double layer structure combining beamforming with a multi-branch power amplification that achieves simultaneously power efficiency in amplification of multilevel constellations without penalties on system performance when compared with common schemes using only beamforming.
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一种双层大规模MIMO方案的低功耗技术
下一代移动通信系统必须支持惊人的数据流量增长、更高的数据速率和更低的延迟,以及其他要求。在保证移动设备和基站的能源效率的同时,必须满足所有这些要求。最有可能的是,未来的5G系统将包括大规模的多输入多输出(MIMO)方案,其中有数十个或数百个天线,可以在毫米波频谱中运行时实现波束形成。一旦克服了毫米波传播的困难,大规模MIMO结构的全部潜力就可以被挖掘出来。本文提出了一种基于波束形成与多支路功率放大相结合的双层结构的二维天线阵列传输系统,与仅使用波束形成的普通方案相比,该系统可以在不影响系统性能的情况下同时实现多层星座的放大功率效率。
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