| 摘要 |
Generation of optical signals is possible using different modulation and multi-carrier schemes to increase the spectrum efficiency of a single channel (carrier). Using technology of coherent detection this can even be made possible adaptively to the transmission demand, spectrum availability and transmission distance. A scheme that allows for utilization of these capability of the physical layer equipment such as transmitter and receiver and other network work elements (OXC, ROADM). The basic idea is to defined ODU format that takes into account of the various possible spectrum efficiency that is possible for the same data rate, resulting the variable bandwidth deployment for the same traffic demand. |
