Cognitive Mesh Networks

A new subnet, integrating the CR and the fiber-access system, is proposed as cognitive radio-over-fiber (CRoF). The aim of the CRoF system is to serve microcells and to achieve higher throughput and lower time delay in small, cognitive, enterprise broadcasting. The CRoF architecture is based on connecting the core CRoF system at the macrocell BS to the terminals of various microcells using the RoF. The terminals can be short-range transmission stations or just bridges that connect microcells wirelessly to the CRoF headquarters. This article gives a brief description for the future working schemes of each of the proposed CRoF implementation scenarios. Opnet simulations were conducted to evaluate the performance of different CRoF designs in coexistence with the primary network. Results show the dominance of the CRoF implementation using multiple, small, fixed radios,and connected via fiber over all other CRoF designed, and traditional CR management systems. The CRoF system is proposed for future applications in CMNs. Further research is required to analyze the performance of the proposed CRoF management scenarios in green communications.