Abstract
In this paper, optical wireless turbo-coded on-off-keying (OOK) systems have been investigated. These systems suffer from performance deterioration due to background noise and the occurrence of synchronization slip. To solve these problems, an optical wireless system that combines a framed differential OOK (framed-DOOK) system and a punctured turbo-coded system is proposed. The bit error rate (BER) performance ef the punctured turbo-coded framed-DOOK system is evaluated in an optical wireless channel. It is shown that the punctured turbo-coded framed-DOOK system can greatly improve the BER performance of the conventional punctured turbo-coded OOK system. Moreover, in the framed-DOOK systems, the BER of the punctured turbo-coded system is almost the same as that of the standard turbo-coded system. Therefore, the proposed punctured turbo-coded framed-DOOK system is more attractive than the conventional turbo-coded OOK systems for optical wireless communications.
