AHP Based Consistency of Pairwise Comparison Matricesgeneralized Jpinion Assessment and Conclusion on the Example of Cognitive Radio System

This study focuses on analyzing the of pairwise comparison matrices consistency in cognitive radio systems under various data transmission modes. The introduction considers the AHP procedure (T. Saaty) and its relation to the decision matrix method (G. Pospelov). To describe an object (cognitive radio system) its operational modes are given (information transmission) (analogous and digital speech and the data). The procedure of expert opinion assessment on the basis of experience (according to E. Zhivitskaya) along with expert competency assessment of the group. The procedure of pairwise comparison matrices determination and making a generalized conclusion of expert opinion on its basis was given. The result offeedback deviation assessment from the ideal one within hierarchical nodes of cognitive radio system operation modes. It was revealed that matrix nodes “Computational Load”, “Computational Resource Consumption Minimization”, “Interferences”, “Natural and Geographic Factors”, “Optimal Information Transmission”, “Power Reduction”, “Speed Increase”are consistent into “Mode 1” of digital information transmission. Pairwise comparison matrices in hierarchical nodes “Power Minimization” into “Mode 4”, speech “Mode 2” and “Mode 3, “Re-Mode 4” and analogous information transmission “Mode 6”, “Data Transmission Maximization” when assessing controlling parameter importance for digital data transmission mode“Mode 3” has the lowest consistency. Weak consistency of parameter assessment for the mode emphasizes the need of extra analysis and special expert attention for the given hierarchy structure.