Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2014, Vol. 37 ›› Issue (2): 84-87.doi: 10.13190/j.jbupt.2014.02.018

Previous Articles     Next Articles

Codebook Selection Scheme for LTE-Advanced System

LIN Xue-hong   

  1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2013-05-16 Online:2014-04-28 Published:2014-04-08

Abstract:

Based on an eight antenna double codebook in long term evolution advanced system, the codebook selection strategy is proposed by feedback long term precoding matrix index and short term precoding matrix index separately. The long term precoding matrix indexis calculated by approximating channel capacity and the short term precoding matrix indexis searched by maximizing channel capacities. Simulation shows that the feedback overload and computational complexity are dramatically reduced performance degradation with only about 0.2dB compared with the optimal codebook selection scheme.

Key words: long term evolution advanced, multi-input multi-output, precoding, codebook selection

CLC Number: