Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2013, Vol. 36 ›› Issue (2): 79-83.doi: 10.13190/jbupt.201302.79.handsh

• Papers • Previous Articles     Next Articles

Performance Analysis of Limited Feedback in Multi-Base-Station Coordination Systems

Han Dongsheng1,wei yang2   

  1. 1. School of Electrical and Electronic Engineering, North China Electric Power University, Hebei Baoding 071003, China;<br>2. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Received:2012-05-19 Revised:2013-01-10 Online:2013-04-30 Published:2013-03-25
  • Contact: Han Dongsheng E-mail:dshhan@gmail.com

Abstract:

The influence of limited feedback on the system throughput is analyzed and the upper bound of throughput loss is derived for the multi-base-station coordination system. The scheme of limited feedback is proposed for the system in two different conditions. The upper bound of system throughput loss is constant by increasing the feedback bits for an increasing signal-to-noise ratio when the number of feedback bits of each cell is equal. The upper bound of system throughput loss is minimized by the proposed optimal feedback allocation mechanism when the total number of feedback bits is fixed.

Key words: base-station coordination, limited feedback, block diagonalization precoding, multiuser interference, inter-cell interference

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