吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (3): 947-954.doi: 10.13229/j.cnki.jdxbgxb201603041

• Orginal Article • Previous Articles     Next Articles

Weighted user-correlation based fair scheduling for MU-MIMO downlink

LI Zhao, LI Pei-feng   

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China
  • Received:2014-10-08 Online:2016-06-20 Published:2016-06-20

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Abstract: Traditional fair scheduling algorithms cannot accurately compute the achievable rate for each user in the process of iterative user selection, which results in non-favorable tradeoff between fairness and system sum rate. To address this problem, a fair scheduling algorithm based on weighted user-correlation (WUCFS) is proposed for MU-MIMO downlink broadcast channels. In this algorithm, users are activated based on comprehensive consideration of the correlation between candidate users and selected users as well as those to be scheduled potentially. Weighted correlation maximization is employed as scheduling criterion. The proposed algorithm could estimate the actual transmission rate of each user more precisely, and activate a set of users of small mutual interference with more fairness and appropriateness. Compared with existing schemes, the propose algorithm could achieve better fairness among users while ensuring high system sum rate.

Key words: communication technology, multiuser, MIMO system, user correlation, fairness scheduling

CLC Number: 

  • TN929.5
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