Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2015, Vol. 38 ›› Issue (4): 15-18.doi: 10.13190/j.jbupt.2015.04.004

• Papers • Previous Articles     Next Articles

A Simplified Fix-Complexity Sphere Decoding

MAO Xin-yu, FAN Wei-liang, WANG Zhi-jun   

  1. School of Electronic Engineering and Computer Science, Peking University, Beijing 100871, China
  • Received:2008-01-01 Online:2015-08-28 Published:2015-07-03

Abstract:

A further simply the calculation complexity of the fixed-complexity sphere decoding (FSD) was proposed for the multiple-input-multiple-output (MIMO) system. By exploiting the channel noise probability distribution, a threshold determined by the upper bound of the symbol error ratio and cumulative distribution function of Chi-squared distribution can be set to cut nodes with larger metrics. Simulation results show that the proposed algorithm drops the complexity efficiently.

Key words: multiple-input-multiple-output system, fixed-complexity, sphere decoding, cut radius

CLC Number: