Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity Compensation
Uniform Circular Antenna (UCA) is a convenient way to generate multiple Orbital Angular Momentum (OAM) beams simultaneously, and OAM-MIMO is promised to be an augmentation to enhance capacity. In this paper, concentric UCA which is an elaborate arrangement of MIMO antennas is adopted. OAM-MIMO trans...
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9366518/ |
| _version_ | 1818727591686701056 |
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| author | Mengnan Jian Yijian Chen Guanghui Yu |
| author_facet | Mengnan Jian Yijian Chen Guanghui Yu |
| author_sort | Mengnan Jian |
| collection | DOAJ |
| description | Uniform Circular Antenna (UCA) is a convenient way to generate multiple Orbital Angular Momentum (OAM) beams simultaneously, and OAM-MIMO is promised to be an augmentation to enhance capacity. In this paper, concentric UCA which is an elaborate arrangement of MIMO antennas is adopted. OAM-MIMO transceiver mode selection and precoding architectures are proposed to improve the coaxial capacity performance. Non-coaxial parameters and their effect on mathematical channel matrix are analyzed, and modified non-coaxial parameters are further introduced to simplify the channel expression. Using the central antenna to separate transmitting (TX) misalignment and receiving (RX) misalignment, modified non-coaxial parameters and deviation matrices can be obtained with reduced complexity, dealing with the lack of non-coaxial parameters in practice. Moreover, to make for the orthogonality between different OAM modes, pre-transmitting and pre-receiving matrices are designed employing estimated modified non-coaxial parameters or deviation matrices to transfer the non-coaxial channel into a block circulant one. The provided simulation results verify the superiority of the proposed mode-selection and precoding design as well as the effectiveness of the proposed non-coaxial pre-processing scheme. |
| first_indexed | 2024-12-17T22:16:32Z |
| format | Article |
| id | doaj.art-1c1ac62401de40fea77f9218a9ec14ce |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-17T22:16:32Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-1c1ac62401de40fea77f9218a9ec14ce2022-12-21T21:30:35ZengIEEEIEEE Access2169-35362021-01-019377263773810.1109/ACCESS.2021.30629469366518Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity CompensationMengnan Jian0https://orcid.org/0000-0002-6750-5690Yijian Chen1https://orcid.org/0000-0002-3567-1854Guanghui Yu2https://orcid.org/0000-0002-7264-9517State Key Laboratory of Mobile Network and Mobile Multimedia Technology, ZTE Corporation, Shenzhen, ChinaState Key Laboratory of Mobile Network and Mobile Multimedia Technology, ZTE Corporation, Shenzhen, ChinaState Key Laboratory of Mobile Network and Mobile Multimedia Technology, ZTE Corporation, Shenzhen, ChinaUniform Circular Antenna (UCA) is a convenient way to generate multiple Orbital Angular Momentum (OAM) beams simultaneously, and OAM-MIMO is promised to be an augmentation to enhance capacity. In this paper, concentric UCA which is an elaborate arrangement of MIMO antennas is adopted. OAM-MIMO transceiver mode selection and precoding architectures are proposed to improve the coaxial capacity performance. Non-coaxial parameters and their effect on mathematical channel matrix are analyzed, and modified non-coaxial parameters are further introduced to simplify the channel expression. Using the central antenna to separate transmitting (TX) misalignment and receiving (RX) misalignment, modified non-coaxial parameters and deviation matrices can be obtained with reduced complexity, dealing with the lack of non-coaxial parameters in practice. Moreover, to make for the orthogonality between different OAM modes, pre-transmitting and pre-receiving matrices are designed employing estimated modified non-coaxial parameters or deviation matrices to transfer the non-coaxial channel into a block circulant one. The provided simulation results verify the superiority of the proposed mode-selection and precoding design as well as the effectiveness of the proposed non-coaxial pre-processing scheme.https://ieeexplore.ieee.org/document/9366518/Orbital angular momentumprecodingmisalignmentnon-coaxial parameter estimationcompensation |
| spellingShingle | Mengnan Jian Yijian Chen Guanghui Yu Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity Compensation IEEE Access Orbital angular momentum precoding misalignment non-coaxial parameter estimation compensation |
| title | Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity Compensation |
| title_full | Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity Compensation |
| title_fullStr | Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity Compensation |
| title_full_unstemmed | Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity Compensation |
| title_short | Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity Compensation |
| title_sort | non coaxial oam precoding design misaligned parameter estimation and capacity compensation |
| topic | Orbital angular momentum precoding misalignment non-coaxial parameter estimation compensation |
| url | https://ieeexplore.ieee.org/document/9366518/ |
| work_keys_str_mv | AT mengnanjian noncoaxialoamprecodingdesignmisalignedparameterestimationandcapacitycompensation AT yijianchen noncoaxialoamprecodingdesignmisalignedparameterestimationandcapacitycompensation AT guanghuiyu noncoaxialoamprecodingdesignmisalignedparameterestimationandcapacitycompensation |