Traffic grooming in translucent optical networks considering the physical layer impairment | |
| Author | Dahal, Suramya Sharma |
| Call Number | AIT RSPR no.TC-11-01 |
| Subject(s) | Telecommunication--Traffic Wavelength division multiplexing Optical communications |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TC-11-01 |
| Abstract | In WDM networks, traffic grooming has been used to increase the efficiency in utilizing high-capacity lightpaths. This research study investigates the problem of grooming sub-wavelength traffic streams into high capacity lightpaths in WDM based translucent optical networks. The considered translucent switching nodes are hybrids of transparent and opaque switching nodes and consist of both optical as well as electronic cores. An optical core can directly switch lightpaths from input ports to output ports, whereas an electronic core is capable of sub-wavelength traffic grooming, 3R regeneration and wavelength conversion. In addition, an electronic core contains electronic ports or O-E-O ports. Depending on the number of ports, only a limited number of lightpaths can be groomed, regenerated or wavelength converted. Distribution of these electronic ports in the network is vital for efficient performance. Thus, we develop an algorithm to distribute a fixed numbers of electronic ports throughout the network based on the topological structure and traffic information. With the distribution of the electronic ports in the network, integer linear programming (ILP) is implemented to optimally groom sub-wavelength traffic demands. Numerical results indicate significant advantages of distributing the electronic ports throughout the network compared to keeping them only at a small number. |
| Year | 2011 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TC-11-01 |
| Type | Research Study Project Report (RSPR) |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Poompat Saengudomlert ; |
| Examination Committee(s) | Teerapat Sanguankotchakorn ;Ahmed, Kazi M.; |
| Scholarship Donor(s) | Partial AIT Fellowship; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2011 |