Performance Evaluation of Cognitive Radios: Metrics, Utility Functions and Methodologies
Source: Virginia Municipal League
The selection and design of performance metrics and utility functions is an important, but inadequately addressed issue in the design of cognitive radio networks. Unlike traditional radios, a cognitive radio may change its objectives as radio scenarios vary. Because of the dynamic pairing of objectives and contexts, it is imperative for cognitive radio network designers to have a firm understanding of the inter-relationships between goals, performance metrics, utility functions, link/network performance, and operating environments. In this paper, the authors first overview the hierarchical metrics for evaluating the performance of cognitive radios from the node, network, and application levels.