Optimum device and modulation scheme selection for optical wireless communications
There has been extensive modelling of the optical wireless channel, and the optimum modulation scheme for a particular channel is well-understood. However, this modelling has not taken into account the trade-offs that transmitter and receiver selection usually involve. For a particular type of trans...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
IEEE
2021
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| _version_ | 1797075779242164224 |
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| author | Chun, H Rajbhandari, S Faulkner, G Xi, E McKendry, JJD Gu, E Dawson, ME O'Brien, D |
| author_facet | Chun, H Rajbhandari, S Faulkner, G Xi, E McKendry, JJD Gu, E Dawson, ME O'Brien, D |
| author_sort | Chun, H |
| collection | OXFORD |
| description | There has been extensive modelling of the optical wireless channel, and the optimum modulation scheme for a particular channel is well-understood. However, this modelling has not taken into account the trade-offs that transmitter and receiver selection usually involve. For a particular type of transmitter, the modulation bandwidth and available power are closely related, as are receiver bandwidth, active area and sensitivity. In this paper, we present a design approach that takes this device selection into account. The paper details a general design method for an optical wireless communication system using a holistic design approach (i.e. considering channel, modulation schemes and device constraints). The paper shows results for particular examples, showing a substantial increase in margin (or data-rate) is available using this approach. For instance, by using this approach mutually optimising both modulation schemes and device constraints, it is found that for an optimally chosen Gallium Nitride micro-LED and a commercial photo receiver pair, a 20 dB SNR margin (or ~3 times data-rate improvement) can be obtained compared with a more typical approach mainly concerning the modulation scheme optimisation. |
| first_indexed | 2024-03-06T23:54:59Z |
| format | Journal article |
| id | oxford-uuid:73e503cb-986b-4309-885c-e5d1d07972de |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:54:59Z |
| publishDate | 2021 |
| publisher | IEEE |
| record_format | dspace |
| spelling | oxford-uuid:73e503cb-986b-4309-885c-e5d1d07972de2022-03-26T19:59:26ZOptimum device and modulation scheme selection for optical wireless communicationsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:73e503cb-986b-4309-885c-e5d1d07972deEnglishSymplectic ElementsIEEE2021Chun, HRajbhandari, SFaulkner, GXi, EMcKendry, JJDGu, EDawson, MEO'Brien, DThere has been extensive modelling of the optical wireless channel, and the optimum modulation scheme for a particular channel is well-understood. However, this modelling has not taken into account the trade-offs that transmitter and receiver selection usually involve. For a particular type of transmitter, the modulation bandwidth and available power are closely related, as are receiver bandwidth, active area and sensitivity. In this paper, we present a design approach that takes this device selection into account. The paper details a general design method for an optical wireless communication system using a holistic design approach (i.e. considering channel, modulation schemes and device constraints). The paper shows results for particular examples, showing a substantial increase in margin (or data-rate) is available using this approach. For instance, by using this approach mutually optimising both modulation schemes and device constraints, it is found that for an optimally chosen Gallium Nitride micro-LED and a commercial photo receiver pair, a 20 dB SNR margin (or ~3 times data-rate improvement) can be obtained compared with a more typical approach mainly concerning the modulation scheme optimisation. |
| spellingShingle | Chun, H Rajbhandari, S Faulkner, G Xi, E McKendry, JJD Gu, E Dawson, ME O'Brien, D Optimum device and modulation scheme selection for optical wireless communications |
| title | Optimum device and modulation scheme selection for optical wireless communications |
| title_full | Optimum device and modulation scheme selection for optical wireless communications |
| title_fullStr | Optimum device and modulation scheme selection for optical wireless communications |
| title_full_unstemmed | Optimum device and modulation scheme selection for optical wireless communications |
| title_short | Optimum device and modulation scheme selection for optical wireless communications |
| title_sort | optimum device and modulation scheme selection for optical wireless communications |
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