基于差分进化算法的多用户OFDM自适应资源分配

doi:10.11959/j.issn.1000-0801.2015003

Abstract

Abstract:

An improved subcarrier and power allocation algorithms based on differential evolution algorithm was proposed for the adaptive resource allocation problem of multiuser orthogonal frequency division multiplexing. Subcarrier allocation was first implemented to distribute the total power uniformly on each subcarrier. Then via adding the step of detecting and improving constraints to improve the differential evolution algorithm and using it to achieve power allocation with a fitness function of the user's fairness and system capacity. Computer simulation results show that the proposed algorithm can achieve high improvement of the system capacity under low complexity and maintaining the fairness among users, the effectiveness of the algorithm was verified.

Key words: multiuser orthogonal frequency division multiplexing, adaptive resource allocation, differential evolution, algorithm, system capacity

Yangkun Zhu,Xinyu Da,Yapu Zhang. Multiuser OFDM Adaptive Resource Allocation Based on Differential Evolution Algorithm[J]. Telecommunications Science, 2015, 31(1): 94-99.

Figures/Tables 5

References 11

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性能标准	AFSA	DE
子载波分配复杂度	O（MN lbN）	O（MN lbN）
功率分配运算次数/次	890 000	35 000
8用户时系统容量/（bit·（s·Hz）^-1）	6.32	6.27
比例公平性参数值	0.948 3	0.999 7

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Multiuser OFDM Adaptive Resource Allocation Based on Differential Evolution Algorithm

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