Multi-cell power allocation algorithm for interference coordination based on harmonic mean fairness

doi:10.7523/j.issn.2095-6134.2012.5.012

›› 2012, Vol. 29 ›› Issue (5): 659-666.DOI: 10.7523/j.issn.2095-6134.2012.5.012

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Multi-cell power allocation algorithm for interference coordination based on harmonic mean fairness

XU Mao, ZHANG Guang-Rong, CHEN Xiao-Hui, WANG Wei-Dong

Wireless Information Network Laboratory, University of Science and Technology of China, Hefei 230027, China

Received:2011-05-16 Revised:2011-08-05 Online:2012-09-15

Abstract

Abstract: We propose a multi-cell power allocation algorithm based on harmonic mean fairness of users' rate for interference coordination in downlink OFDMA-based wireless cellular system. In order to mitigate the co-channel interference of cell edge users first, we formulate the multi-cell power allocation problem as a non-convex optimization problem with an objective of harmonic mean fairness of users' rate, and propose an iterative algorithm to work out the near-optimal solution to the problem. The algorithm requires cooperation between the adjacent base-stations by exchanging interference messages. Simulation results show that the proposed algorithm achieves a high data rate of cell center users, while greatly enhances the data rate of cell edge users.

Key words: OFDMA, multi-cell, ICIC, power allocation, harmonic mean fairness

CLC Number:

TN929.5

XU Mao, ZHANG Guang-Rong, CHEN Xiao-Hui, WANG Wei-Dong. Multi-cell power allocation algorithm for interference coordination based on harmonic mean fairness[J]. , 2012, 29(5): 659-666.

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Multi-cell power allocation algorithm for interference coordination based on harmonic mean fairness

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