Two protocols inclouding the receiver collision avoidance function are proposed for high-speed optical fiber LANs with finite users. The basic idea to avoid receiver collision is the grouping of destination nodes by the number of channels and it is accomplished in the architecture with or without one separate control channel. While the protocol with a control channel requires a tunable optical transmitter, a fixed optical transmitter and two fixed optical receiver, the other protocol requires a tunable optical transmitter and one fixed optical receiver. The performance of two receiver collision avoidance protocols is computed and analyzed under various system parameters. The numerical results show that the receiver collision avoidance protocol has better performance for a small load than the protocol without receiver collision avoidance.
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