Full-duplex transmitter cooperation, feedback, and the degrees of freedom of SISO Gaussian interference and X channels

Author

Abdoli, Mohammad Javad ; Ghasemi, Akbar ; Khandani, Amir Keyvan

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada

fYear

2012

fDate

1-6 July 2012

Firstpage

3120

Lastpage

3124

Abstract

The Gaussian single-input single-output (SISO) K-user interference and M × K X channels are investigated in i.i.d. fading environment with no instantaneous channel state information (CSI) at transmitters. First, it is assumed that the CSI is fed back to all nodes after some delay (delayed CSIT), and furthermore, the transmitters operate in full-duplex mode. Achievable results on the degrees of freedom (DoF) of these channels under the above assumption are obtained. Then, achievable DoFs are obtained for the K-user interference and K × K X channels with output feedback and also Shannon feedback, which is a combination of output feedback and delayed CSIT, and compared with the achievable DoFs under the full-duplex delayed CSIT assumption.

Keywords

Gaussian channels; cooperative communication; fading channels; feedback; radio transmitters; radiofrequency interference; Gaussian single input single output system; K-user interference; SISO Gaussian interference; X channels; channel state information; fading environment; full duplex transmitter cooperation; Equations; Integrated circuits; Interference; MIMO; Output feedback; Receivers; Transmitters; Interference channel; X channel; degrees of freedom; delayed CSIT; feedback; full-duplex;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory Proceedings (ISIT), 2012 IEEE International Symposium on

Conference_Location

Cambridge, MA

ISSN

2157-8095

Print_ISBN

978-1-4673-2580-6

Electronic_ISBN

2157-8095

Type

conf

DOI

10.1109/ISIT.2012.6284138

Filename

6284138