Selfish multi-channel random access in heterogeneous channels
(English)Manuscript (preprint) (Other academic)
We analyze the behavior of selfish users in a multichannel random access system in which the propagation characteristics of the available channels in the system exhibit different statistics. We formulate the behavior of the selfish users as a Bayesian game and identify the transmission strategies at the Nash equilibria. Following this, we propose a simple iterative algorithm to obtain the transmission probabilities of the selfish uses at the Nash equilibria and investigate the convergence properties of this algorithm. Using the transmission probabilities of the selfish users at the Nash equilibria, we analyze the performance of the MRA system with selfish users in terms of sum and per-user utilities and compare this system with its cooperative and scheduling system counterparts. We find that selfish behavior results in significant performance loss compared to scheduling and cooperative systems, which increases as the system load increases.
Telecommunications Communication Systems
IdentifiersURN: urn:nbn:se:kth:diva-51071OAI: oai:DiVA.org:kth-51071DiVA: diva2:463340
QC 201203282011-12-092011-12-092016-06-20Bibliographically approved