| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
Mobile traffic of wireless communication systems is rapidly increasing and efficient use of radio resource is becoming very important. Cognitive radio is technique to adaptively optimize radio resource usage by dynamic selection of the spectrum. In this research, for optimization of resource selection in the cognitive radio, I have applied complex dynamics of chaotic systems to maximize the performance.
I have formulated the optimal selection problems in cognitive radio as multi-armed bandit problems and combinatorial optimization problems, and have proposed several chaotic algorithms to optimize them. For throughput optimization of wireless LAN, I have shown effectiveness of the proposed method by experiments using the real implemented systems, and have applied a patent. Furthermore, I have clarified the theory of low-cross correlation theory based on chaotic dynamics and published a Japanese book entitled Network Chaos.
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