Hierarchical Codebook Design for Near-Field MmWave MIMO Communications Systems

Communications system with analog or hybrid analog/digital architectures usually relies on a pre-defined codebook to perform beamforming. With the increase in the size of the antenna array, the characteristics of the spherical wavefront in the near-field situation are not negligible. Therefore, it i...

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Bibliographic Details
Published inIEEE wireless communications letters Vol. 12; no. 11; p. 1
Main Authors Chen, Jiawei, Gao, Feifei, Jian, Mengnan, Yuan, Wanmai
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.11.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna arrays
Array signal processing
Beamforming
Communications systems
Design methodology
Fresnel region
hierarchical codebook
Hybrid systems
Millimeter wave communication
Millimeter waves
MIMO communication
mmWave communications
Near fields
Near-field
Radio frequency
Radio transmitters
Receiving antennas
Relocation
Steering
Trajectory
Wave fronts
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Summary:Communications system with analog or hybrid analog/digital architectures usually relies on a pre-defined codebook to perform beamforming. With the increase in the size of the antenna array, the characteristics of the spherical wavefront in the near-field situation are not negligible. Therefore, it is necessary to design a codebook that is adaptive to near-field scenarios. In this letter, we investigate the hierarchical codebook design method in the near-field situation. We develop a steering beam gain approximation method and design the lower-layer codebook to provide coverage for the Fresnel region. For the upper-layer codebook, we propose beam rotation and beam relocation methods to place an arbitrary beam pattern to a target location. The simulation results show the superiority of the proposed near-field hierarchical codebook design.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2023.3299354