Performance Comparison of Optimized Resource Allocation in CoMP LTE-A using Iterative Subgradient Method and PSO
Keywords:Resource Allocation, Optimization, Subgradient Method, PSO,
AbstractInter-cell interference (ICI) is a primary factor that limits the capacity of any wireless cellular system. Recently, base stations cooperation (i.e., CoMP LTEAdvanced) is seen as a promising way to reduce ICI through coordination. In CoMP, the allocation of crucial resources such as subcarrier and power should be carefully determined because the resource allocation strategies of cells in CoMP affect each other’s performance. Our previous work proposed an optimized resource allocation (ORA) scheme that maximizes proportional fairness utility subject to user minimum rate requirement and available base station (BS) power constraints. Selecting appropriate tool to solve any optimization problem is very important because different tools may results in different level of complexity, convergence rate and searching capabilities. In this paper, we carry out simulation study to investigate the performance of our ORA scheme by using different optimization tools. The first tool is iterative subgradient method and the second tool is metaheuristics optimization algorithm, namely Particle Swarm Optimization (PSO). Based on numerical results, PSO gives the best performance in terms of mean values, standard deviations and processing time compared to iterative subgradient algorithm.
L. Sun, Shaohui and Gao, Qiubin and Peng, Ying and Wang, Yingmin and Song, “Interference management through CoMP in 3GPP LTEadvanced networks,” Wirel. Commun. IEEE, vol. 20, no. 1, pp. 59–66, 2013.
J. Sung, C. H. Lai, and X. J. Wu, Particle Swarm Optimization: Classical and Quantum Perspectives. CRC Press, Taylor & Francis Group, 2012.
R. Zhang, “Cooperative Multi-cell Block Diagonalization with per-BS Power Constraints,” IEEE J. Sel. Areas Commun., vol. 28, no. 9, 2010.
D. Choi, D. Lee, and J. H. Lee, “Resource Allocation for CoMP with Multiuser MIMO-OFDMA,” IEEE Trans. Veh. Technol., vol. 6, no. 9, 2011.
C. Jingya, L., Tommy, S., Carmen, B., Thomas, E., Xiaodong, X. and Xin, “Joint Scheduling and Power Control in Coordinated Multipoint Clusters,” in IEEE Vehicular Technology Conference (VTC), 2011.
G. A. Ana, S. F. Matilde, and R. C., “Constrained Power Allocation Schemes for Coordinated Base Station Transmission using Block Diagonalization,” EURASIP J. Wirel. Commun. Netw., 2011.
C. Li, C. Lei, Z. Xin, and Y. Dacheng, “A Coordinated Scheduling Strategy in Multicell OFDM Systems,” in IEEE Global Communications Conference, Exhibition and Industry Forum (GLOBECOM), 2010.
N. Katiran, N. Fisal, and A. S. A. Ghafar, “Resource Allocation in Network MIMO using Particle Swarm Optimization,” Int. J. Innov. Res. Eng. Multidiscip. Phys. Sci., 2014.
H. Zhu and K. J. R. Liu, Resource Allocation for Wireless Networks: Basics, Techniques and Applications. Cambridge University Press, 2008.
L. L. Hai and W. Qiang, “A Resource Evolutionary Algorithm for OFDM based on Karush-Kuhn-Tucker Conditions,” Math. Probl. Eng. Hindawi Publ. Corp., 2013.
W. Ian and E. Brian, Resource Allocation in Multiuser Multicarrier Wireless Systems. Springer, 2008.
A. M. Rashmi and S. D. Chavan, “A Survey: Evolutionary and Swarm Based Bio-Inspired Optimization Algorithms,” Int. J. Sci. Res. Publ., vol. 2, no. 12, 2012.
R. Deepak and T. Kirti, “Bio-Inspired Optimization Techniques-A Critical Comparative Study,” ACM SIGSOFT Softw. Eng. Notes, vol. 38, no. 4, 2013.
S. Binitha and S. S. Sathya, “A Survey of Bio-Inspired Optimization Algorithms,” Int. J. Soft Comput. Eng., vol. 2, no. 2, 2012.
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