Memory-Based Codes for Uniform Illumination in MIMO VLC
Light emitting diode (LED) based indoor multiple input multiple output visible light communication system has LEDs placed at various positions in the room which are simultaneously used for illumination and communications. In such a system, there should be no human perceivable fluctuations in the int...
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IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9036970/ |
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| author | Thummaluri Uday Abhinav Kumar Lakshmi Natarajan |
| author_facet | Thummaluri Uday Abhinav Kumar Lakshmi Natarajan |
| author_sort | Thummaluri Uday |
| collection | DOAJ |
| description | Light emitting diode (LED) based indoor multiple input multiple output visible light communication system has LEDs placed at various positions in the room which are simultaneously used for illumination and communications. In such a system, there should be no human perceivable fluctuations in the intensity of the individual LEDs to avoid user discomfort. In order to achieve the uniformity in illumination, we propose codes under the constraints of constant total transmit power per symbol and constant average transmit power for each individual LED. We show the performance of the proposed codes in terms of various metrics like bit error rate (BER), consistency in illumination, and spectral efficiency with suitable expressions. We also numerically analyze the impact of channel state information (CSI) on BER performance by assuming perfect CSI is not always available but periodically updated at the receiver. |
| format | Article |
| id | doaj-art-21f6adbe40ee462c99bb76dcd43f4d02 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-21f6adbe40ee462c99bb76dcd43f4d022025-08-20T03:33:11ZengIEEEIEEE Photonics Journal1943-06552020-01-0112211510.1109/JPHOT.2020.29810089036970Memory-Based Codes for Uniform Illumination in MIMO VLCThummaluri Uday0https://orcid.org/0000-0002-9780-2549Abhinav Kumar1Lakshmi Natarajan2https://orcid.org/0000-0003-1552-5240Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Telangana, IndiaDepartment of Electrical Engineering, Indian Institute of Technology Hyderabad, Telangana, IndiaDepartment of Electrical Engineering, Indian Institute of Technology Hyderabad, Telangana, IndiaLight emitting diode (LED) based indoor multiple input multiple output visible light communication system has LEDs placed at various positions in the room which are simultaneously used for illumination and communications. In such a system, there should be no human perceivable fluctuations in the intensity of the individual LEDs to avoid user discomfort. In order to achieve the uniformity in illumination, we propose codes under the constraints of constant total transmit power per symbol and constant average transmit power for each individual LED. We show the performance of the proposed codes in terms of various metrics like bit error rate (BER), consistency in illumination, and spectral efficiency with suitable expressions. We also numerically analyze the impact of channel state information (CSI) on BER performance by assuming perfect CSI is not always available but periodically updated at the receiver.https://ieeexplore.ieee.org/document/9036970/Bit error ratemultiple input multiple outputspectral efficiencyvisible light communications |
| spellingShingle | Thummaluri Uday Abhinav Kumar Lakshmi Natarajan Memory-Based Codes for Uniform Illumination in MIMO VLC IEEE Photonics Journal Bit error rate multiple input multiple output spectral efficiency visible light communications |
| title | Memory-Based Codes for Uniform Illumination in MIMO VLC |
| title_full | Memory-Based Codes for Uniform Illumination in MIMO VLC |
| title_fullStr | Memory-Based Codes for Uniform Illumination in MIMO VLC |
| title_full_unstemmed | Memory-Based Codes for Uniform Illumination in MIMO VLC |
| title_short | Memory-Based Codes for Uniform Illumination in MIMO VLC |
| title_sort | memory based codes for uniform illumination in mimo vlc |
| topic | Bit error rate multiple input multiple output spectral efficiency visible light communications |
| url | https://ieeexplore.ieee.org/document/9036970/ |
| work_keys_str_mv | AT thummaluriuday memorybasedcodesforuniformilluminationinmimovlc AT abhinavkumar memorybasedcodesforuniformilluminationinmimovlc AT lakshminatarajan memorybasedcodesforuniformilluminationinmimovlc |