Key elements to enable millimeter wave communications for 5G wireless systems
Key elements to enable millimeter wave communications for 5G wireless systems
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DOI：
10.1109/mwc.2014.7000981
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发表时间：
2014-12
影响因子：
12.9
通讯作者：
Lili Wei;R. Hu;Y. Qian;Geng Wu
中科院分区：
文献类型：
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作者：
Lili Wei;R. Hu;Y. Qian;Geng Wu
目前低于3 GHz频段的蜂窝频谱正面临严重短缺，无法跟上不久的将来移动的流量的急剧增长，需要寻找创新的解决方案来实现5G时代。具有可能的每秒千兆比特数据速率的毫米波通信作为5G宽带蜂窝通信网络的候选者已经引起了极大的关注。然而，5G无线网络的毫米波链路的完整表征仍然难以实现，并且有许多挑战和研究领域需要解决。在这项工作中，我们讨论了在5G中实现毫米波通信的几个关键要素：·解释了由于自由空间传播、大气气体和雨水引起的毫米波信号衰减的信道特性。·讨论了毫米波系统中的混合（数字加模拟）波束形成结构。·提出了毫米波通信中由于穿透损耗引起的阻塞效应和可能的解决方法。·提出了具有窄波束的毫米波传输在非正交设备到设备通信中的应用。·异构锚点-助推器网络的助推器小区中的毫米波传输。·进一步讨论用于小小区回程的毫米波传输。
Current cellular spectrum at below 3 GHz bands is experiencing severe shortage and cannot keep up with the dramatic proliferation of mobile traffic in the near future, requiring the search for innovative solutions to enable the 5G era. mmWave communications, with a possible gigabit-per-second data rate, have attracted great attention as a candidate for 5G broadband cellular communication networks. However, a complete characterization of mmWave links for 5G wireless networks still remains elusive and there are many challenges and research areas that need to be addressed. In this work we discuss several key elements to enable mmWave communications in 5G: · Channel characteristics regarding mmWave signal attenuation due to free space propagation, atmospheric gaseous and rain are explained. · The hybrid (digital plus analog) beamforming architecture in mmWave system is discussed. · The blockage effect in mmWave communications due to penetration loss and possible approaches are presented. · The application of mmWave transmission with narrow beams in non-orthogonal device-todevice communication is proposed. · mmWave transmission in the booster cell of heterogeneous anchor-booster networks. · mmWave transmission for small cell backhaul is further discussed.