Rate-Maximized Zero-Forcing Beamforming for VLC Multiuser MISO Downlinks
In this study, we aim to maximize the achievable rate for a visible light communication (VLC) downlink multiuser multiple-input–single-output (MISO) system deployed with zero-forcing (ZF) beamforming. By incorporating the ZF, transmit signal's nonnegativity, and light-emitting...
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IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/7397835/ |
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| author | Hong Shen Yuqin Deng Wei Xu Chunming Zhao |
| author_facet | Hong Shen Yuqin Deng Wei Xu Chunming Zhao |
| author_sort | Hong Shen |
| collection | DOAJ |
| description | In this study, we aim to maximize the achievable rate for a visible light communication (VLC) downlink multiuser multiple-input–single-output (MISO) system deployed with zero-forcing (ZF) beamforming. By incorporating the ZF, transmit signal's nonnegativity, and light-emitting diode (LED) maximum permissible current constraints, we formulate the rate maximization problem of interest, which possesses a complicated nonconvex form. To handle this challenging problem, we first employ the powerful concave–convex procedure to develop an iterative algorithm that converges to a locally optimal solution. Subsequently, by exploiting the high signal-to-noise ratio (SNR) characteristic in VLC, we simplify the primal nonconvex design problem into a solvable convex one that admits a high-quality solution. As an alternative approach, we impose a channel pseudoinverse structure on the beamforming matrix followed by power allocation optimization. Finally, we carry out simulations to investigate the performance of the proposed schemes under a VLC scenario. |
| format | Article |
| id | doaj-art-ed51a87c4c20407d8ec9ba7ffbef9bc7 |
| institution | Matheson Library |
| issn | 1943-0655 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-ed51a87c4c20407d8ec9ba7ffbef9bc72025-07-01T23:04:57ZengIEEEIEEE Photonics Journal1943-06552016-01-018111310.1109/JPHOT.2016.25245137397835Rate-Maximized Zero-Forcing Beamforming for VLC Multiuser MISO DownlinksHong Shen0Yuqin Deng1Wei Xu2Chunming Zhao3Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, ChinaNat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, ChinaNat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, ChinaNat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, ChinaIn this study, we aim to maximize the achievable rate for a visible light communication (VLC) downlink multiuser multiple-input–single-output (MISO) system deployed with zero-forcing (ZF) beamforming. By incorporating the ZF, transmit signal's nonnegativity, and light-emitting diode (LED) maximum permissible current constraints, we formulate the rate maximization problem of interest, which possesses a complicated nonconvex form. To handle this challenging problem, we first employ the powerful concave–convex procedure to develop an iterative algorithm that converges to a locally optimal solution. Subsequently, by exploiting the high signal-to-noise ratio (SNR) characteristic in VLC, we simplify the primal nonconvex design problem into a solvable convex one that admits a high-quality solution. As an alternative approach, we impose a channel pseudoinverse structure on the beamforming matrix followed by power allocation optimization. Finally, we carry out simulations to investigate the performance of the proposed schemes under a VLC scenario.https://ieeexplore.ieee.org/document/7397835/Visible light communication (VLC)multiple-input single-output (MISO)zero-forcing (ZF) beamforming |
| spellingShingle | Hong Shen Yuqin Deng Wei Xu Chunming Zhao Rate-Maximized Zero-Forcing Beamforming for VLC Multiuser MISO Downlinks IEEE Photonics Journal Visible light communication (VLC) multiple-input single-output (MISO) zero-forcing (ZF) beamforming |
| title | Rate-Maximized Zero-Forcing Beamforming for VLC Multiuser MISO Downlinks |
| title_full | Rate-Maximized Zero-Forcing Beamforming for VLC Multiuser MISO Downlinks |
| title_fullStr | Rate-Maximized Zero-Forcing Beamforming for VLC Multiuser MISO Downlinks |
| title_full_unstemmed | Rate-Maximized Zero-Forcing Beamforming for VLC Multiuser MISO Downlinks |
| title_short | Rate-Maximized Zero-Forcing Beamforming for VLC Multiuser MISO Downlinks |
| title_sort | rate maximized zero forcing beamforming for vlc multiuser miso downlinks |
| topic | Visible light communication (VLC) multiple-input single-output (MISO) zero-forcing (ZF) beamforming |
| url | https://ieeexplore.ieee.org/document/7397835/ |
| work_keys_str_mv | AT hongshen ratemaximizedzeroforcingbeamformingforvlcmultiusermisodownlinks AT yuqindeng ratemaximizedzeroforcingbeamformingforvlcmultiusermisodownlinks AT weixu ratemaximizedzeroforcingbeamformingforvlcmultiusermisodownlinks AT chunmingzhao ratemaximizedzeroforcingbeamformingforvlcmultiusermisodownlinks |