Pulse amplitude and delay modulation for indoor optical wireless communications
Pulse amplitude and delay modulation technique 'PADM' for power efficient indoor optical wireless communications is proposed in this paper. PADM symbol structure and other specifications were investigated and compared to existing power efficient modulation techniques like PPM, DPPM, DPIM a...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
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Institute of Electrical and Electronics Engineers Inc.
2014
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| Online Access: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925934028&doi=10.1109%2fI4CT.2014.6914134&partnerID=40&md5=b8f045fc777fe2f357238e2e631c343b http://eprints.utp.edu.my/31135/ |
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| Summary: | Pulse amplitude and delay modulation technique 'PADM' for power efficient indoor optical wireless communications is proposed in this paper. PADM symbol structure and other specifications were investigated and compared to existing power efficient modulation techniques like PPM, DPPM, DPIM and DH-PIM. Using mathematical model and simulation it was found that for the same size of input block PADM has better bandwidth efficiency by �20 than other techniques, also two times higher transmission rate can be achieved when using same slot duration for all techniques, however the power efficiency still lower and need to be improved. It was found that using input block size M=3 provides the highest bandwidth efficiency versus best power requirements and thus considered as best input block sizes for this technique. © 2014 IEEE. |
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