Optical wireless communication using digital pulse interval modulation

Andrew R. Hayes; Zabih F. Ghassemlooy; N. L. Seed

doi:10.1117/12.338982

27 January 1999 Optical wireless communication using digital pulse interval modulation

Andrew R. Hayes, Zabih F. Ghassemlooy, N. L. Seed

Proceedings Volume 3532, Optical Wireless Communications; (1999) https://doi.org/10.1117/12.338982
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States

Abstract

This paper presents a study of digital pulse interval modulation (DPIM) as a candidate modulation scheme for optical wireless communications. DPIM code characteristics are discussed and the theoretical error probability performance of DPIM is analyzed in terms of the packet error rate. Performance comparisons are made with the more established techniques of on-off keying and pulse position modulation (PPM). We show that, for a simple threshold detector based receiver, DPIM can out perform PPM in terms of bandwidth efficiency and power efficiency, by taking advantage of its inherent variable symbol duration. Practical results are given for an experimental system in the form of eye diagrams. The use of a coding scheme with a non-uniform symbol duration does have implications for system design, which are discussed in the paper.

Citation Download Citation

Andrew R. Hayes, Zabih F. Ghassemlooy, and N. L. Seed "Optical wireless communication using digital pulse interval modulation", Proc. SPIE 3532, Optical Wireless Communications, (27 January 1999); https://doi.org/10.1117/12.338982

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