QoS-aware Wavelength Assignment with BER and Latency Guarantees for Crosstalk Limited Networks

— Crosstalk originating from optical switching devices and demultiplexers can be the dominant physical impairment in large all-optical networks. When a centralized network controller must estimate the impact of crosstalk and other physical impairments on the quality of a lightpath, this can add significant latency. In this paper, QoS-aware wavelength assignment algorithms are proposed that consider both bit error rate and latency guarantees. A technique called wavelength ordering is presented to alleviate physical impairments and also decrease the processing delay due to bit-error-rate (BER) estimation. Simulations presented show that the wavelength ordering algorithm outperforms other wavelength assignments when both BER and response latency guarantees are enforced.

• Type: Conference
• Year: 2007
• Where: ICC
• Authors: Jun He, Maïté Brandt-Pearce, Charles L. Brown, Suresh Subramaniam
• Keywords: Communications, ICC 2007, Physical Impairments, Wavelength, Wavelength Assignments