Gibbs sampling based distributed OFDMA resource allocation |
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Authors: | GARCIA Virgile CHEN Chung Shue ZHOU YiQing SHI JingLin |
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Affiliation: | [1]Wireless Technology Research Center, Institute of Computing Technology, Chinese Academy of Sciences, Baiting 100190, China [2]Beijing Key Laboratory of Mobile Computing and Pervasive Device, Beijing 100190, China [3]Alcatel-Lucent Bell Labs, Centre de Villarceaux, 91620 Nozay, France |
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Abstract: | In this article,we present a distributed resource and power allocation scheme for multiple-resource wireless cellular networks.The global optimization of multi-cell multi-link resource allocation problem is known to be NP-hard in the general case.We use Gibbs sampling based algorithms to perform a distributed optimization that would lead to the global optimum of the problem.The objective of this article is to show how to use the Gibbs sampling(GS)algorithm and its variant the Metropolis-Hastings(MH)algorithm.We also propose an enhanced method of the MH algorithm,based on a priori known target state distribution,which improves the convergence speed without increasing the complexity.Also,we study different temperature cooling strategies and investigate their impact on the network optimization and convergence speed.Simulation results have also shown the effectiveness of the proposed methods. |
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Keywords: | radio resource allocation power control interference management distributed optimization Gibbssampling Metropolis-Hastings |
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