Sub-System SVD Hybrid Beamforming Design for Millimeter Wave Multi-Carrier Systems
| Autor: | Mao-Ching Chiu, Chi-chao Chao, Tzung-Hua Tsai |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Beamforming
Computer science Orthogonal frequency-division multiplexing Applied Mathematics 020206 networking & telecommunications Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Multiplexing Computer Science Applications Reduction (complexity) Channel state information Singular value decomposition 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering Communication channel |
| Zdroj: | IEEE Transactions on Wireless Communications. 18:518-531 |
| ISSN: | 1558-2248 1536-1276 |
| DOI: | 10.1109/twc.2018.2882490 |
| Popis: | In this paper, the hybrid beamforming design for multiple-input multiple-output orthogonal frequency-division multiplexing systems is studied over the indoor millimeter wave (mm-wave) channels. Under practical hybrid beamforming constraints for multi-carrier systems and the study of sub-systems, we propose the sub-system SVD (SS) hybrid beamforming design. To alleviate the complexity problem of channel estimation, reduction of the amount of the required channel state information (CSI) is also studied based on the statistical properties of indoor mm-wave channels. The SS hybrid beamforming algorithm is then extended to the limited feedback SS (LSS) scheme in which the transmit beamformers are designed based on limited information fed back from the receiver. A fast codeword selection algorithm is also developed to reduce the search complexity of the LSS algorithm. The simulation results show that our SS algorithm achieves the performance level of traditional full-digital beamforming with low complexity and the LSS algorithm has better performance and lower complexity than the previous algorithm, even if the amount of CSI is greatly reduced. |
| Databáze: | OpenAIRE |
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