Abstract
One fiber radio scheme using shifted prime codes for interference elimination is proposed for optical code-division multiple-access (OCDMA) network. By taking advantage of the cyclic property of the shifted prime codes in the same code groups, the proposed compact decoder is low cost and suitable to be used in the task manager node in the applications of wireless sensor networks. The performance comparison for sev-eral OCDMA-based fiber radio networks is also given to clarify the advantage of the proposed one.
Highlights
In today’s mobile radio networks, the provision of broadband services between a large number of remote base stations (RBSs) is required
One fiber radio scheme using shifted prime codes for interference elimination is proposed for optical code-division multiple-access (OCDMA) network
By taking advantage of the cyclic property of the shifted prime codes in the same code groups, the proposed compact decoder is low cost and suitable to be used in the task manager node in the applications of wireless sensor networks
Summary
In today’s mobile radio networks, the provision of broadband services between a large number of remote base stations (RBSs) is required. Code division multiple access (CDMA) techniques were investigated for optical network applications during the last 20 to 25 years. These techniques allow many users to access the common channel asynchronously and securely, and, since dedicated time or wavelength slots do not have to be allocated, high statistical multiplexing gain can be offered even in bursty traffic. Performance analysis takes thermal noise and PIIN into account It shows that, as compared to several fiber radio schemes based merely on SAC, the use of SP codes allows larger number of RBSs to access the network simultaneously under a given carrier-to-noise ratio (CNR)
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