Analysis of interference alignment for wireless communication with external interference

Author

Normando, Paulo G. ; Bandeira, Carlos I. R. ; Moreira, Darlan C. ; Freitas, Walter C. ; Silva, Yuri C. B. ; Cavalcanti, F. Rodrigo P.

Author_Institution

Wireless Telecommun. Res. Group (GTEL), Fed. Univ. of Ceara, Fortaleza, Brazil

fYear

2014

fDate

17-20 Aug. 2014

Firstpage

1

Lastpage

5

Abstract

In order to better cope with the increasing levels of interference in wireless cellular systems, interference mitigation techniques that consider a certain degree of coordination/cooperation among cells have been recently employed, such as Joint Processing (JP) and Interference Alignment (IA). In this paper we evaluate the performance of different IA-based algorithms in the presence of uncoordinated external interference, with JP schemes used as a benchmark. Sum rate and Bit Error Rate (BER) results are presented for different external interference scenarios and it is shown that there is trade-off between IA and JP, and that for high external interference levels IA algorithms modified to handle this external interference can achieve better BER performances.

Keywords

cellular radio; error statistics; interference suppression; radiofrequency interference; BER results; IA-based algorithms; JP schemes; bit error rate; external interference scenarios; interference alignment; interference mitigation techniques; joint processing; sum rate; uncoordinated external interference; wireless cellular systems; Algorithm design and analysis; Bit error rate; Covariance matrices; Interference; Receivers; Signal to noise ratio; Transmitting antennas; Cooperative Precoding; External Interference; Interference Alignment;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Symposium (ITS), 2014 International

Conference_Location

Sao Paulo

Type

conf

DOI

10.1109/ITS.2014.6947972

Filename

6947972