Lens Antenna Subarrays in mmWave Hybrid MIMO Systems
Lens Antenna Subarrays in mmWave Hybrid MIMO Systems
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DOI：
10.1109/access.2020.3041633
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发表时间：
2020-12
期刊：
影响因子：
3.9
通讯作者：
Murat Karabacak;H. Arslan;G. Mumcu
中科院分区：
文献类型：
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作者：
Murat Karabacak;H. Arslan;G. Mumcu
研究了由基于新型透镜天线子阵列 (LAS) 的混合多输入多输出 (MIMO) 架构组成的毫米波无线通信系统的数据速率和能效性能。当子阵列的透镜直径分别减小或增大时，LAS架构退化为传统的混合MIMO架构(TA)或单透镜天线阵列架构(SLA)。结果表明，在毫米波信道散射条件下，LAS 架构的运行数据速率接近 TA，同时显着超过 SLA 的数据速率。由于硬件复杂性和功耗降低，LAS 架构的运行能效显着提高。在一个由 64 和 16 个发射器和接收器天线以及 2 个 RF 链组成的示例系统中，结果表明 LAS 架构的运行能源效率为 2 美元×98%，频谱效率为 98%。在更大的混合 MIMO 天线系统中，LAS 架构有望受益更多。
Data rate and energy efficiency performance of mmWave wireless communication systems consisting of a new lens antenna subarray (LAS) based hybrid multiple input multiple output (MIMO) architecture is investigated. The LAS architecture degenerates into traditional hybrid MIMO architecture (TA) or single lens antenna array architecture (SLA) when the lens diameter of the subarray is reduced or enlarged, respectively. It is shown that under mmWave channel scattering conditions, LAS architecture operates with a data rate approaching that of TA while significantly exceeding the data rate of the SLA. Due to the reduced hardware complexity and power consumption, LAS architectures operate with a significantly improved energy efficiency. In an example system consisting of 64 and 16 transmitter and receiver antennas with 2 RF chains, it is shown that the LAS architecture operates with $2\times $ energy efficiency and 98% spectrum efficiency. In a larger hybrid MIMO antenna systems, LAS architecture is expected to benefit even more.