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A Closed-Form PS-DFT Codebook Design for mmWave Beam Alignment | IEEE Conference Publication | IEEE Xplore

A Closed-Form PS-DFT Codebook Design for mmWave Beam Alignment

Publisher: IEEE

Abstract:

Multi-resolution codebook based hierarchical beam training is an attractive solution to the heavy overhead of millimeter-wave (mmWave) beam alignment. However, most exist...View more

Abstract:

Multi-resolution codebook based hierarchical beam training is an attractive solution to the heavy overhead of millimeter-wave (mmWave) beam alignment. However, most existing codebooks suffer from either undesired main-lobefluctuation or high hardware-complexity. To address these issues, this paper proposes a closed-form phase-shifted discrete Fourier transformation (PS-DFT/CF) codebook design for mmWave links with hybrid structures. The proposed codebook is of hybrid analog/digital architecture. Analog components are fixed-size DFT vectors, which can be readily implemented with radiofrequency (RF) phase shifters. Digital components at baseband select unitary subbeams shaped by the analog components and tackle the impact of the phase difference between adjacent subbeams, such that multi-resolution flat beam patterns can be synthesized. Moreover, the closed-form PS-DFT codebook design enables joint transceiver design for mmWave beam alignment. Numerical results verify that the proposed PS-DFT/CF codebook approaches the performance of the ideal PS-DFT counterpart.
Date of Conference: 20-24 May 2019
Date Added to IEEE Xplore: 15 July 2019
ISBN Information:

ISSN Information:

Publisher: IEEE
Conference Location: Shanghai, China

References

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