Evolutionarily Stable Spectrum Access

Details Evolutionarily Stable Spectrum Access Evolutionarily Stable Spectrum Access

2012-04-11

arxiv.org/abs/1204.2376v1

Computer Science

Networking and Internet Architecture

arXiv admin note: substantial text overlap with arXiv:1103.1026

Scientific paper

In this paper, we design distributed spectrum access mechanisms with both complete and incomplete network information. We propose an evolutionary spectrum access mechanism with complete network information, and show that the mechanism achieves an equilibrium that is globally evolutionarily stable. With incomplete network information, we propose a distributed learning mechanism, where each user utilizes local observations to estimate the expected throughput and learns to adjust its spectrum access strategy adaptively over time. We show that the learning mechanism converges to the same evolutionary equilibrium on the time average. Numerical results show that the proposed mechanisms are robust to the perturbations of users' channel selections.

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