On the capacity of indoor optical wireless communications

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2006Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Communications Letters, volume 10, pages 552-554 (issn: 1089-7798,

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Authors: Ubolthip Sethakaset; T. Aaron Gulliver;

doi: 10.1109/lcom.2006.224417 , 10.1109/lcomm.2006.1673010

On the capacity of indoor optical wireless communications

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Abstract

In this letter, the capacity of an optical wireless communications system in an indoor environment is investigated. We consider various modulation schemes, e.g. pulse-position modulation (L-PPM), differential pulse-position modulation (L-DPPM) and differential amplitude pulse-position modulation (AtimesL-DAPPM). It is shown that L-DPPM provides twice the channel capacity of L-PPM. Moreover, Atimes L-DAPPM has a higher capacity than L-DPPM. The capacity of PPM is degraded more by multipath dispersion than that of DPPM and DAPPM.

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