Optical Parallel Transmission with Multi-Wavelength for High Speed Communications on Indoor Channels

Yuichi TANAKA  Masao NAKAGAWA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E81-B   No.4   pp.729-736
Publication Date: 1998/04/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Optical Communication
Keyword: 
optical wireless LAN,  intersymbol interference (ISI),  multipath dispersive channel,   multi-wavelength transmission,  parallel coding,  

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Summary: 
In indoor optical channels, intersymbol interference (ISI) due to multipath propagation prevents high data rate transmission. In this paper, a new Optical Multi-Wavelength Modulation technique has been investigated for improving the quality of transmission. In this technique, parallel transmission is used, which lowers the data rate per channel and thus reduces the effects of ISI. Furthermore, parallel coding is used in predetermined parallel branches, so that coding can correct errors without changing the system data rate. Simulation results show that a combination of these methods can achieve high quality transmission without reduction of the total data rate.