Degrees of Freedom of Wyner's linear asymmetric channel

Multi-antenna has a great potential to improve the performance of wireless communication system due to its spatial multiplexing. In this paper, we investigate the Degrees of Freedom (DoF) of Wyner's linear asymmetric channel where each transmitter connects to its own receiver and one successive receiver. The DoF regions of Wyner's linear asymmetric channel for 2 users are provided when each node is equipped with arbitrary number of antennas. Meanwhile, the total DoF of this channel for arbitrary K users are obtained when transmitters and receivers are equipped with different number of antennas. For each case, the conditions with and without channel state information at transmitters are both studied.

[1]  Syed A. Jafar,et al.  Interference Alignment: A New Look at Signal Dimensions in a Communication Network , 2011, Found. Trends Commun. Inf. Theory.

[2]  Aly El Gamal,et al.  Degrees of freedom (DoF) of locally connected interference channels with coordinated multi-point (CoMP) transmission , 2011, 2012 IEEE International Conference on Communications (ICC).

[3]  Aaron D. Wyner,et al.  Shannon-theoretic approach to a Gaussian cellular multiple-access channel , 1994, IEEE Trans. Inf. Theory.

[4]  Huarui Yin,et al.  Degrees of Freedom Region for an Interference Network With General Message Demands , 2012, IEEE Transactions on Information Theory.

[5]  Shlomo Shamai,et al.  Degrees of Freedom Region of the MIMO $X$ Channel , 2008, IEEE Transactions on Information Theory.

[6]  Mahesh K. Varanasi,et al.  The Degree-of-Freedom Regions of MIMO Broadcast, Interference, and Cognitive Radio Channels With No CSIT , 2009, IEEE Transactions on Information Theory.

[7]  Syed Ali Jafar,et al.  Degrees of Freedom for the MIMO Interference Channel , 2006, ISIT.

[8]  Shlomo Shamai,et al.  On Degrees of Freedom Region of MIMO Networks without CSIT , 2009, ArXiv.

[10]  Mahesh K. Varanasi,et al.  A New Outer Bound via Interference Localization and the Degrees of Freedom Regions of MIMO Interference Networks With No CSIT , 2011, IEEE Transactions on Information Theory.

[11]  Lizhong Zheng,et al.  Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels , 2003, IEEE Trans. Inf. Theory.

[12]  Syed Ali Jafar,et al.  Interference Alignment and Degrees of Freedom of the $K$-User Interference Channel , 2008, IEEE Transactions on Information Theory.

[13]  S. Jafar.  Degrees of Freedom for Distributed MIMO Communications , 2005 .

[14]  Shlomo Shamai,et al.  A Linear Interference Network with Local Side-Information , 2007, 2007 IEEE International Symposium on Information Theory.

[15]  Dongning Guo,et al.  The Degrees of Freedom of MIMO Interference Channels without State Information at Transmitters , 2010, ArXiv.