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Optical code-division multiple-access network system employing central code assignment scheme and optical encoder and decoder for the network system
Optical code-division multiple-access network system employing central code assignment scheme and optical encoder and decoder for the network system
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机译:使用中央码分配方案和用于该网络系统的光编码器和解码器的光码分多址网络系统
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摘要
Provided are an optical code-division multiple-access (O-CDMA) network system and method and an optical encoder and decoder in the system. The O-CDMA network system includes a central station and at least one subscriber unit. In a code assigning method of the optical code-division multiple-access network system, first, the subscriber unit transmits a code assignment request signal to the central station. Then, the central station assigns a code to the subscriber unit. Thereafter, the subscriber unit programs an encoding and decoding code based on the assigned code. The optical encoder and decoder includes a refraction grating, arrayed optical waveguides, optical switches, and optical reflectors. Therefore, a central code assignment scheme can be achieved, and programming of the encoder and decoder is possible.
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