On Feasibility of Interference Alignment for L-Cell Constant Cellular Interfering Networks

Author

Ma, Yanjun ; Li, Jiandong ; Chen, Rui ; Liu, Qin

Author_Institution

State Key Lab. of Integrated Service Networks, Xidian Univ., Xi´´an, China

Volume

16

Issue

5

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

714

Lastpage

716

Abstract

In this letter, the degrees of freedom (DoF) outer bound is characterized for an L-cell constant cellular interfering network by using linear interference alignment (IA). For a symmetric network, it means that no matter how many cells and users per cell there are, the total achievable DoF is bounded by M+N, where M and N denote the number of antennas equipped on users and base stations. Besides, a DoF achievable algorithm is also proposed. Although the DoF outer bound cannot be reached, more DoF can be obtained compared with orthogonal schemes.

Keywords

antennas; cellular radio; radiofrequency interference; DoF achievable algorithm; DoF outer bound; L-cell constant cellular interfering network; antenna; base station; degrees of freedom outer bound; linear interference alignment; symmetric network; Antennas; Integrated circuits; Interference channels; MIMO; Signal processing algorithms; Vectors; Interference channel; Multi-User MIMO; degrees of freedom; interference alignment;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.032612.120387

Filename

6177201