Feedback and delayed CSI can be as good as perfect CSI

Ravi Tandon; Soheil Mohajer; H. Vincent Poor; Shlomo Shamai

doi:10.1109/ICC.2012.6364171

Feedback and delayed CSI can be as good as perfect CSI

Ravi Tandon, Soheil Mohajer, H. Vincent Poor, Shlomo Shamai

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

3 Scopus citations

Abstract

The degrees of freedom (DoF) region of the two-user MIMO interference channel (IC) is completely characterized in the presence of noiseless channel output feedback from each receiver to its respective transmitter and with the assumption of delayed channel state information (CSI) at the transmitters. It is shown that having output feedback and delayed CSI at the transmitters can strictly enlarge the DoF region when compared to the case in which only delayed CSI is available at the transmitters. Furthermore, cases are identified in which output feedback and delayed CSI alone are sufficient to achieve the DoF region achievable with perfect, instantaneous CSI.

Original language	English (US)
Title of host publication	2012 IEEE International Conference on Communications, ICC 2012
Pages	2355-2359
Number of pages	5
DOIs	https://doi.org/10.1109/ICC.2012.6364171
State	Published - 2012
Event	2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada Duration: Jun 10 2012 → Jun 15 2012

Publication series

Name	IEEE International Conference on Communications
ISSN (Print)	1550-3607

Other

Other	2012 IEEE International Conference on Communications, ICC 2012
Country/Territory	Canada
City	Ottawa, ON
Period	6/10/12 → 6/15/12

All Science Journal Classification (ASJC) codes

Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1109/ICC.2012.6364171

Cite this

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title = "Feedback and delayed CSI can be as good as perfect CSI",

abstract = "The degrees of freedom (DoF) region of the two-user MIMO interference channel (IC) is completely characterized in the presence of noiseless channel output feedback from each receiver to its respective transmitter and with the assumption of delayed channel state information (CSI) at the transmitters. It is shown that having output feedback and delayed CSI at the transmitters can strictly enlarge the DoF region when compared to the case in which only delayed CSI is available at the transmitters. Furthermore, cases are identified in which output feedback and delayed CSI alone are sufficient to achieve the DoF region achievable with perfect, instantaneous CSI.",

author = "Ravi Tandon and Soheil Mohajer and Poor, {H. Vincent} and Shlomo Shamai",

year = "2012",

doi = "10.1109/ICC.2012.6364171",

language = "English (US)",

isbn = "9781457720529",

series = "IEEE International Conference on Communications",

pages = "2355--2359",

booktitle = "2012 IEEE International Conference on Communications, ICC 2012",

note = "2012 IEEE International Conference on Communications, ICC 2012 ; Conference date: 10-06-2012 Through 15-06-2012",

}

Tandon, R, Mohajer, S, Poor, HV & Shamai, S 2012, Feedback and delayed CSI can be as good as perfect CSI. in 2012 IEEE International Conference on Communications, ICC 2012., 6364171, IEEE International Conference on Communications, pp. 2355-2359, 2012 IEEE International Conference on Communications, ICC 2012, Ottawa, ON, Canada, 6/10/12. https://doi.org/10.1109/ICC.2012.6364171

TY - GEN

T1 - Feedback and delayed CSI can be as good as perfect CSI

AU - Tandon, Ravi

AU - Mohajer, Soheil

AU - Poor, H. Vincent

AU - Shamai, Shlomo

PY - 2012

Y1 - 2012

N2 - The degrees of freedom (DoF) region of the two-user MIMO interference channel (IC) is completely characterized in the presence of noiseless channel output feedback from each receiver to its respective transmitter and with the assumption of delayed channel state information (CSI) at the transmitters. It is shown that having output feedback and delayed CSI at the transmitters can strictly enlarge the DoF region when compared to the case in which only delayed CSI is available at the transmitters. Furthermore, cases are identified in which output feedback and delayed CSI alone are sufficient to achieve the DoF region achievable with perfect, instantaneous CSI.

AB - The degrees of freedom (DoF) region of the two-user MIMO interference channel (IC) is completely characterized in the presence of noiseless channel output feedback from each receiver to its respective transmitter and with the assumption of delayed channel state information (CSI) at the transmitters. It is shown that having output feedback and delayed CSI at the transmitters can strictly enlarge the DoF region when compared to the case in which only delayed CSI is available at the transmitters. Furthermore, cases are identified in which output feedback and delayed CSI alone are sufficient to achieve the DoF region achievable with perfect, instantaneous CSI.

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U2 - 10.1109/ICC.2012.6364171

DO - 10.1109/ICC.2012.6364171

M3 - Conference contribution

AN - SCOPUS:84871997041

SN - 9781457720529

T3 - IEEE International Conference on Communications

SP - 2355

EP - 2359

BT - 2012 IEEE International Conference on Communications, ICC 2012

T2 - 2012 IEEE International Conference on Communications, ICC 2012

Y2 - 10 June 2012 through 15 June 2012

ER -

Feedback and delayed CSI can be as good as perfect CSI

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