期刊
SENSORS
卷 20, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/s20123583
关键词
bipolar; optical code division multiple access; electro-optical modulator; free-space optics communication
资金
- Ministry of Science and Technology, Taiwan [MOST 108-2221-E-150-041, MOST 108-2221-E-239-003]
This study developed a bipolar optical code division multiple access (Bi-OCDMA) technique based on spectral amplitude coding for the formation and transmission of optical-polarized and coded signals over wireless optical channels. Compared with conventional Bi-OCDMA schemes, the proposed free-space optics communication system that uses a dual electro-optical modulator design improves the transmission rate. In theory, multiple access interference can be removed by using correlation subtraction schemes. The experiment results revealed that the proposed system can be employed to accurately extract codewords from anM-sequence and subsequently reconstruct the desired original data. Moreover, the proposed architecture can be implemented easily in simple and cost-effective designs and may be beneficial for broadening the use of Bi-OCDMA schemes in wireless optical communications.
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