Title :
Improved Interference Alignment Precoding for the MIMO X Channel
Author :
Agustin, Adrian ; Vidal, Josep
Author_Institution :
Dept. of Signal Theor. & Commun., UPC (Univ. Politec. de Catalunya), Barcelona, Spain
Abstract :
We derive a linear transmit precoding scheme based on interference alignment at the transmitters and zero-forcing at the receivers, for the MIMO X channel based on the Generalized Singular Value Decomposition (GSVD) that is able to attain the outer bound on the degrees of freedom (DoF) region for any antenna configuration, except when all terminals have one antenna. Additionally, the proposed scheme is able to enhance the transmission rate in terms of high SNR offset.
Keywords :
MIMO communication; antenna arrays; interference suppression; precoding; radiofrequency interference; singular value decomposition; wireless channels; DoF region; GSVD; MIMO X channel; SNR offset; antenna configuration; degrees of freedom region; generalized singular value decomposition; interference alignment precoding; linear transmit precoding scheme; radio receiver; radio transmitter; Antennas; IEEE Communications Society; Information theory; Interference; MIMO; Signal to noise ratio; Singular value decomposition;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5962671
