Title :
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
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;
Conference_Titel :
Information Theory Proceedings (ISIT), 2012 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
978-1-4673-2580-6
Electronic_ISBN :
2157-8095
DOI :
10.1109/ISIT.2012.6284138
