DoF region and sum rate analysis for the K user MIMO IC with limited CSI feedback

Paula Aquilina; Tharmalingam Ratnarajah; Anastasios Papazafeiropoulos

doi:10.1109/PIMRC.2014.7136280

DoF region and sum rate analysis for the K user MIMO IC with limited CSI feedback

Paula Aquilina, Tharmalingam Ratnarajah, Anastasios Papazafeiropoulos

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

Abstract

In this work we investigate the degrees of freedom (DoF) performance of the multIPle-input multIPle-output (MIMO) interference channel (IC) with limited channel state information (CSI) feedback. We generalise two space-time interference alignment (STIA) algorithms to the K user MIMO IC with a transmit power constraint and show how these schemes exploit both current and outdated CSI to achieve an improved DoF performance. We show that by combining the STIA schemes with traditional methods major DoF gain can be achieved for a variety of limited CSI feedback scenarios in comparison to what would be obtained via the use of the traditional techniques on their own. In particular we prove that optimal DoF can still be achieved in situations where current CSI is unavailable for a derived fraction of the time. Finally we validate the promised DoF results via system simulation and show how these DoF gains reflect in terms of sum rate achievable.

Original language	English
Title of host publication	2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	832-836
Number of pages	5
Volume	2014-June
ISBN (Electronic)	9781479949120
DOIs	https://doi.org/10.1109/PIMRC.2014.7136280
Publication status	Published - 25 Jun 2014
Event	2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014 - Washington, United States Duration: 2 Sept 2014 → 5 Sept 2014

Conference

Conference	2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014
Country/Territory	United States
City	Washington
Period	2/09/14 → 5/09/14

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10.1109/PIMRC.2014.7136280

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Aquilina, P., Ratnarajah, T., & Papazafeiropoulos, A. (2014). DoF region and sum rate analysis for the K user MIMO IC with limited CSI feedback. In 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014 (Vol. 2014-June, pp. 832-836). Article 7136280 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/PIMRC.2014.7136280

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abstract = "In this work we investigate the degrees of freedom (DoF) performance of the multIPle-input multIPle-output (MIMO) interference channel (IC) with limited channel state information (CSI) feedback. We generalise two space-time interference alignment (STIA) algorithms to the K user MIMO IC with a transmit power constraint and show how these schemes exploit both current and outdated CSI to achieve an improved DoF performance. We show that by combining the STIA schemes with traditional methods major DoF gain can be achieved for a variety of limited CSI feedback scenarios in comparison to what would be obtained via the use of the traditional techniques on their own. In particular we prove that optimal DoF can still be achieved in situations where current CSI is unavailable for a derived fraction of the time. Finally we validate the promised DoF results via system simulation and show how these DoF gains reflect in terms of sum rate achievable.",

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Aquilina, P, Ratnarajah, T & Papazafeiropoulos, A 2014, DoF region and sum rate analysis for the K user MIMO IC with limited CSI feedback. in 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014. vol. 2014-June, 7136280, Institute of Electrical and Electronics Engineers (IEEE), pp. 832-836, 2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014, Washington, United States, 2/09/14. https://doi.org/10.1109/PIMRC.2014.7136280

DoF region and sum rate analysis for the K user MIMO IC with limited CSI feedback. / Aquilina, Paula; Ratnarajah, Tharmalingam; Papazafeiropoulos, Anastasios.
2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014. Vol. 2014-June Institute of Electrical and Electronics Engineers (IEEE), 2014. p. 832-836 7136280.

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

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Aquilina P, Ratnarajah T, Papazafeiropoulos A. DoF region and sum rate analysis for the K user MIMO IC with limited CSI feedback. In 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014. Vol. 2014-June. Institute of Electrical and Electronics Engineers (IEEE). 2014. p. 832-836. 7136280 doi: 10.1109/PIMRC.2014.7136280

DoF region and sum rate analysis for the K user MIMO IC with limited CSI feedback

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