Lens Antenna Subarrays in mmWave Hybrid MIMO Systems

IEEE Access

卷:8

Murat Karabacak¹  Gokhan Mumcu¹  Huseyin Arslan¹ 

[1] Department of Electrical Engineering, University of South Florida, Tampa, FL, USA;

关键词: MIMO;    beamforming;    lens antenna;    large antenna array;    subarray;    mmWave;   

DOI  :  10.1109/ACCESS.2020.3041633

来源: DOAJ

【 摘 要 】

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× energy efficiency and 98% spectrum efficiency. In a larger hybrid MIMO antenna systems, LAS architecture is expected to benefit even more.

【 授权许可】

Unknown