On Degrees of Freedom of the Cognitive MIMO Two-Interfering Multiple-Access Channels

被引：8

作者：

Ayoughi, Seyed Arvin ^{[1
]}

Nasiri-Kenari, Masoumeh ^{[1
]}

Khalaj, Babak Hossein ^{[1
]}

机构：

[1] Sharif Univ Technol, Dept Elect Engn, Tehran, Iran

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2013年 / 62卷 / 05期

关键词：

Degrees of Freedom (DoF) region; genie-aided cognitive radio (CR); interference alignment (IA); uplink channel; INTERFERENCE ALIGNMENT;

D O I：

10.1109/TVT.2012.2237529

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper characterizes the exact spatial Degrees of Freedom (DoF) region of the two-user multiple-input-multiple-output two-interfering multiple-access channels (2-IMACs), which models the uplink transmission in cellular networks, for three scenarios. The first scenario is the 2-IMAC without cognition, for which the achievability is generalized for more than two transmitters in each multiple-access channel. The two-user 2-IMACs' DoF regions are also derived for two different genie-aided cognition scenarios. Here, zero forcing by transmitters and interference alignment are studied in a network with more than two transmitters, whereas previous works dealt with two-transmitter networks. We also perform a comparative analysis on the DoF of the three scenarios.

引用

页码：2052 / 2068

页数：17

共 20 条

[1]

[Anonymous], P IEEE GLOBECOM 10 D

[2]

[Anonymous], 2000, MATRIX ANAL APPL LIN

[3]

Bayesteh Alireza, 2011, 2011 12th Canadian Workshop on Information Theory (CWIT), P182, DOI 10.1109/CWIT.2011.5872152

[4] Interference alignment and degrees of freedom of the K-user interference channel [J].

Cadambe, Viveck R. ;

Jafar, Syed Ali .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2008, 54 (08) :3425-3441

[5] Achievable rates in cognitive radio channels [J].

Devroye, N ;

Mitran, P ;

Tarokh, V .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2006, 52 (05) :1813-1827

[6] The multiplexing gain of MIMO X-channels with partial transmit side-information [J].

Devroye, Natasha ;

Sharif, Masoud .

2007 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS, VOLS 1-7, 2007, :111-+

[7] Is the PHY Layer Dead? [J].

Dohler, Mischa ;

Heath, Robert W., Jr. ;

Lozano, Angel ;

Papadias, Constantinos B. ;

Valenzuela, Reinaldo A. .

IEEE COMMUNICATIONS MAGAZINE, 2011, 49 (04) :159-165

[8] Breaking Spectrum Gridlock With Cognitive Radios: An Information Theoretic Perspective [J].

Goldsmith, Andrea ;

Jafar, Syed Ali ;

Maric, Ivana ;

Srinivasa, Sudhir .

PROCEEDINGS OF THE IEEE, 2009, 97 (05) :894-914

[9] Approaching the Capacity of Wireless Networks through Distributed Interference Alignment [J].

Gomadam, Krishna ;

Cadambe, Viveck R. ;

Jafar, Syed A. .

GLOBECOM 2008 - 2008 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, 2008,

[10] Degrees of Freedom of the MIMO Interference Channel With Cooperation and Cognition [J].

Huang, Chiachi ;

Jafar, Syed A. .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2009, 55 (09) :4211-4220

← 1 2 →