吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (2): 531-537.doi: 10.13229/j.cnki.jdxbgxb201402040

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Interference alignment scheme for multicell multiuser system through THP

ZHANG Jin-bo, YUAN Chao-wei, WANG Qiu-cai, HAN Xi   

  1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2013-02-23 Online:2014-02-01 Published:2014-02-01

Abstract:

In order to improve the multicell downlink capacity, an interference alignment scheme for multicell multiuser system through Tomlinson-Harashima Precoding (THP) is proposed. In this scheme, the appropriate feedback triangular matrices, feedforward matrices and receiving matrices are designed to align the interferences, thus effectively improving each cell's capacity. The design criteria of the proposed scheme are given. Theoretical analysis and simulation demonstrate that the proposed scheme can obtain the same degree of freedom (DOF) and more capacity compared with existing schemes.

Key words: signal processing technology, interference alignment, multi-cell, channel capacity

CLC Number: 

  • TN929.5

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