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Journal Article
Frequency divided group beamforming with sparse spacefrequency code for above 6 GHz URLLC systems
- Authors
- Chanho Yoon, Woncheol Cho, Kapseok Chang, Young-Jo Ko
- Issue Date
- 2022-12
- Citation
- ETRI Journal, v.44, no.6, pp.925-935
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- Korean
- Type
- Journal Article
- Abstract
- In this study, we propose a limited feedback-based frequency divided group beamforming with sparse space-frequency transmit diversity coded orthogonal frequency division multiplexing (OFDM) system for ultrareliable low latency communication (URLLC) scenario. The proposed scheme has several advantages over the traditional hybrid beamforming approach, including not requiring downlink channel state information for baseband precoding, supporting distributed multipoint transmission structures for diversity, and reducing beam sweeping latency with little uplink overhead. These are all positive aspects of physical layer characteristics intended for URLLC. It is suggested in the system to manage the multipoint transmission structure realized by distributed panels using a power allocation method based on cooperative game theory. Link-level simulations demonstrate that the proposed scheme offers reliability by achieving both higher diversity order and array gain in a non-line-of-sight channel of selectivity and limited spatial scattering.
- KSP Keywords
- 6 GHz, Allocation method, Beam sweeping, Channel State Information(CSI), Coded Orthogonal Frequency Division Multiplexing, Diversity Order, Hybrid Beamforming, Layer characteristics, Line of sight(LOS), Link level simulation, Low latency
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
