The achievable generalized degrees of freedom of interference channel with orthogonal relay

Author

Zhao, Song ; Zhang, Tiankui ; Zeng, Zhimin

Author_Institution

Sch. of Commun. & Inf. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2010

fDate

6-10 Dec. 2010

Firstpage

741

Lastpage

745

Abstract

The generalized degrees of freedom (GDOF) of the interference channel with orthogonal relay (ICOR) was studied in this paper. ICOR is a modified ICR model where each of the forward and backward relay channels is orthogonal with the rest channels. In this paper, the achievable GDOF of ICOR was obtained and the power allocation scheme at the source that can maximize the GDOF was given. The relation between the GDOF of the whole system and the parts of the ICOR was also analyzed, where the later are namely the interference channel (IC) part and the orthogonal relay channel (ORC) part. The results showed that the GDOF of the IC part and the ORC part are balanced by the power allocation scheme and the optimum power allocation is affected by the channel parameters of the source-to-destination channel and the interference channel.

Keywords

interference (signal); telecommunication channels; telecommunication network routing; backward relay channel; channel parameters; forward relay channel; generalized degrees of freedom; interference channel; orthogonal relay; power allocation; source-to-destination channel;

fLanguage

English

Publisher

ieee

Conference_Titel

GLOBECOM Workshops (GC Wkshps), 2010 IEEE

Conference_Location

Miami, FL

Print_ISBN

978-1-4244-8863-6

Type

conf

DOI

10.1109/GLOCOMW.2010.5700421

Filename

5700421