Degrees of freedom region of MIMO interference channel with imperfect current and delayed CSIT

Yi Luo; Anastasios Papazafeiropoulos; Tharm Ratnarajah

doi:10.1109/WCNC.2014.6952201

Degrees of freedom region of MIMO interference channel with imperfect current and delayed CSIT

Yi Luo, Anastasios Papazafeiropoulos, Tharm Ratnarajah

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

In this paper, we study the degrees of freedom (DoF) of the two-user time-correlated multiple-input-multiple-output (MIMO) interference channel (IC), under realistic assumptions. In particular, the transmitters have imperfect knowledge of the current and the delayed channel state information (CSI). The novelty of this study relies upon the fact that this is the first time, within the literature of IC, that imperfect CSI is addressed for such a case. The delayed CSI at the transmitter (CSIT) is assumed to be more accurate than the current value. We identify the DoF region, which provides an insight on the behaviour of the DoF as a function of the varying qualities of the current and the delayed channel. It is also worth mentioning that any knowledge of imperfect delayed CSIT can also be utilized. Furthermore, an achievability scheme is proposed for each vertex in DoF region. Finally, simulation of the proposed scheme verifies our results.

Original language	English
Title of host publication	IEEE Wireless Communications and Networking Conference, WCNC
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	863-868
Number of pages	6
ISBN (Electronic)	9781479930838
DOIs	https://doi.org/10.1109/WCNC.2014.6952201
Publication status	Published - 10 Nov 2014
Event	2014 IEEE Wireless Communications and Networking Conference, WCNC 2014 - Istanbul, Turkey Duration: 6 Apr 2014 → 9 Apr 2014

Conference

Conference	2014 IEEE Wireless Communications and Networking Conference, WCNC 2014
Country/Territory	Turkey
City	Istanbul
Period	6/04/14 → 9/04/14

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10.1109/WCNC.2014.6952201

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title = "Degrees of freedom region of MIMO interference channel with imperfect current and delayed CSIT",

abstract = "In this paper, we study the degrees of freedom (DoF) of the two-user time-correlated multiple-input-multiple-output (MIMO) interference channel (IC), under realistic assumptions. In particular, the transmitters have imperfect knowledge of the current and the delayed channel state information (CSI). The novelty of this study relies upon the fact that this is the first time, within the literature of IC, that imperfect CSI is addressed for such a case. The delayed CSI at the transmitter (CSIT) is assumed to be more accurate than the current value. We identify the DoF region, which provides an insight on the behaviour of the DoF as a function of the varying qualities of the current and the delayed channel. It is also worth mentioning that any knowledge of imperfect delayed CSIT can also be utilized. Furthermore, an achievability scheme is proposed for each vertex in DoF region. Finally, simulation of the proposed scheme verifies our results.",

author = "Yi Luo and Anastasios Papazafeiropoulos and Tharm Ratnarajah",

year = "2014",

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doi = "10.1109/WCNC.2014.6952201",

language = "English",

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booktitle = "IEEE Wireless Communications and Networking Conference, WCNC",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

note = "2014 IEEE Wireless Communications and Networking Conference, WCNC 2014 ; Conference date: 06-04-2014 Through 09-04-2014",

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Luo, Y, Papazafeiropoulos, A & Ratnarajah, T 2014, Degrees of freedom region of MIMO interference channel with imperfect current and delayed CSIT. in IEEE Wireless Communications and Networking Conference, WCNC., 6952201, Institute of Electrical and Electronics Engineers (IEEE), pp. 863-868, 2014 IEEE Wireless Communications and Networking Conference, WCNC 2014, Istanbul, Turkey, 6/04/14. https://doi.org/10.1109/WCNC.2014.6952201

Degrees of freedom region of MIMO interference channel with imperfect current and delayed CSIT. / Luo, Yi; Papazafeiropoulos, Anastasios; Ratnarajah, Tharm.
IEEE Wireless Communications and Networking Conference, WCNC. Institute of Electrical and Electronics Engineers (IEEE), 2014. p. 863-868 6952201.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Degrees of freedom region of MIMO interference channel with imperfect current and delayed CSIT

AU - Luo, Yi

AU - Papazafeiropoulos, Anastasios

AU - Ratnarajah, Tharm

PY - 2014/11/10

Y1 - 2014/11/10

N2 - In this paper, we study the degrees of freedom (DoF) of the two-user time-correlated multiple-input-multiple-output (MIMO) interference channel (IC), under realistic assumptions. In particular, the transmitters have imperfect knowledge of the current and the delayed channel state information (CSI). The novelty of this study relies upon the fact that this is the first time, within the literature of IC, that imperfect CSI is addressed for such a case. The delayed CSI at the transmitter (CSIT) is assumed to be more accurate than the current value. We identify the DoF region, which provides an insight on the behaviour of the DoF as a function of the varying qualities of the current and the delayed channel. It is also worth mentioning that any knowledge of imperfect delayed CSIT can also be utilized. Furthermore, an achievability scheme is proposed for each vertex in DoF region. Finally, simulation of the proposed scheme verifies our results.

AB - In this paper, we study the degrees of freedom (DoF) of the two-user time-correlated multiple-input-multiple-output (MIMO) interference channel (IC), under realistic assumptions. In particular, the transmitters have imperfect knowledge of the current and the delayed channel state information (CSI). The novelty of this study relies upon the fact that this is the first time, within the literature of IC, that imperfect CSI is addressed for such a case. The delayed CSI at the transmitter (CSIT) is assumed to be more accurate than the current value. We identify the DoF region, which provides an insight on the behaviour of the DoF as a function of the varying qualities of the current and the delayed channel. It is also worth mentioning that any knowledge of imperfect delayed CSIT can also be utilized. Furthermore, an achievability scheme is proposed for each vertex in DoF region. Finally, simulation of the proposed scheme verifies our results.

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M3 - Conference contribution

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BT - IEEE Wireless Communications and Networking Conference, WCNC

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 2014 IEEE Wireless Communications and Networking Conference, WCNC 2014

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ER -

Degrees of freedom region of MIMO interference channel with imperfect current and delayed CSIT

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