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2011•Unpublished venueRequires access

On the degrees of freedom of X channel with delayed CSIT

Akbar Ghasemi, Seyed Abolfazl Motahari, Amir Keyvan Khandani

Open publisher page 82 citations

Abstract

We consider the X channel and the 3-user X network with independent and identically distributed fading across antennas and channel uses and with the delayed channel state information at the transmitters (CSIT). We provide new results for degrees of freedom of these channels. Specifically, we show that the single antenna X channel with delayed CSIT can achieve 6/5 degrees of freedom while the 3-user X network can achieve 5/4 degrees of freedom.

About this research paper

What this paper is about

We consider the X channel and the 3-user X network with independent and identically distributed fading across antennas and channel uses and with the delayed channel state information at the transmitters (CSIT). We provide new results for degrees of freedom of these channels. Specifically, we show that the single antenna X channel with delayed CSIT can achieve 6/5 degrees of freedom while the 3-user X network can achieve 5/4 degrees of freedom.

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OpenAlex reports 82 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

We consider the X channel and the 3-user X network with independent and identically distributed fading across antennas and channel uses and with the delayed channel state information at the transmitters (CSIT). We provide new results for degrees of freedom of these channels. Specifically, we show that the single antenna X channel with delayed CSIT can achieve 6/5 degrees of freedom while the 3-user X network can achieve 5/4 degrees of freedom.

Key concepts: Degrees of freedom (physics and chemistry), Channel state information, Fading, Channel (broadcasting), Computer science, Topology (electrical circuits), Antenna (radio), Transmitter

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