[2205.01098] Initial Access for Millimeter-Wave and Terahertz Communications with Hybrid Beamforming
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Computer Science > Information Theory

arXiv:2205.01098 (cs)
[Submitted on 2 May 2022]

Title:Initial Access for Millimeter-Wave and Terahertz Communications with Hybrid Beamforming

Authors:Wei Jiang, Hans D. Schotten
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Abstract:In order to achieve terabits-per-second (Tbps) data rates in the sixth-generation (6G) mobile system, wireless communications are required to exploit the abundant spectrum in the millimeter-wave (mmWave) and terahertz (THz) bands. However, high-frequency transmission heavily relies on high beamforming gain to compensate for severe propagation loss. A beam-based system faces a barrier in the process of initial access, where a base station must broadcast synchronization signals and system information to all users within its coverage. Hence, this paper proposes a novel omnidirectional broadcasting scheme for mmWave and THz systems with hybrid beamforming. It provides an instantaneously equal gain over all directions by forming complementary beams over sub-arrays. Numerical results verify that it can achieve omnidirectional coverage with a performance that remarkably outperforms the previous scheme.
Comments: 2022 IEEE International Conference on Communications (ICC), May 2022, Seoul, South Korea. arXiv admin note: substantial text overlap with arXiv:2205.00691
Subjects: Information Theory (cs.IT); Signal Processing (eess.SP)
Cite as: arXiv:2205.01098 [cs.IT]
  (or arXiv:2205.01098v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.2205.01098

Submission history

From: Wei Jiang [view email]
[v1] Mon, 2 May 2022 07:31:36 UTC (693 KB)
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