Bandwidth Optimization using Flex Grid over Conventional Grid for 5G Optical Networks

This research paper is aim to analyze the difference between fix and flex grid plans for 5G multiple-input multiple-output (MIMO) transmission system. Analysis will be made for different bandwidths i.e., 500GHz, 400GHz, and 350GHz for 20km transmission distance of Multi-mode Fiber (MMF). Both fix and flex-grid plans are studied under the fixed transmission rate (100G) and for different data rates (20G/40G/100G). Purpose of changing the grid plan is to save the bandwidth of an optical communication system that is useless because of guard bands. We have evaluated the spectrum utilization gains using OFDM based transmitters and receivers in MIMO optical networks with flexible grid, and then compared to a conventional grid MIMO transmission optical networks. Results shows that there will be an overall improvement of 30% in capacity of a communication network in using flex-grid plan over the fix-grid plan.