Optimum Spectral and Energy Efficiency Tradeoff in Two-User Gaussian Interference Channel

Donghong Cai; Jingxian Wu; Jing Yang; Pingzhi Fan

doi:10.1109/LWC.2017.2785804

Optimum Spectral and Energy Efficiency Tradeoff in Two-User Gaussian Interference Channel

Donghong Cai, Jingxian Wu, Jing Yang, Pingzhi Fan

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

In this letter, we study the optimum tradeoff between the spectral efficiency (SE) and energy efficiency (EE) for the two-user Gaussian interference channel (GIC). The achievable SE-EE tradeoff region of two-user GIC is obtained by studying the interactions between the two links due to their mutual interference. Each point in the SE-EE tradeoff region corresponds to a possible scheduling strategy between the two links. The optimum SE-EE tradeoff is then identified by maximizing the EE for a given sum SE, where the maximum EE is expressed as a closed-form function of the SE. The result analytically quantifies the impact of mutual interference on the SE-EE tradeoff. It is shown that the optimum scheduling strategy depends on the interference coefficients between the two links and the target SE.

Original language	English (US)
Pages (from-to)	468-471
Number of pages	4
Journal	IEEE Wireless Communications Letters
Volume	7
Issue number	3
DOIs	https://doi.org/10.1109/LWC.2017.2785804
State	Published - Jun 2018

All Science Journal Classification (ASJC) codes

Control and Systems Engineering
Electrical and Electronic Engineering

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10.1109/LWC.2017.2785804

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abstract = "In this letter, we study the optimum tradeoff between the spectral efficiency (SE) and energy efficiency (EE) for the two-user Gaussian interference channel (GIC). The achievable SE-EE tradeoff region of two-user GIC is obtained by studying the interactions between the two links due to their mutual interference. Each point in the SE-EE tradeoff region corresponds to a possible scheduling strategy between the two links. The optimum SE-EE tradeoff is then identified by maximizing the EE for a given sum SE, where the maximum EE is expressed as a closed-form function of the SE. The result analytically quantifies the impact of mutual interference on the SE-EE tradeoff. It is shown that the optimum scheduling strategy depends on the interference coefficients between the two links and the target SE.",

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AU - Cai, Donghong

AU - Wu, Jingxian

AU - Yang, Jing

AU - Fan, Pingzhi

PY - 2018/6

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AB - In this letter, we study the optimum tradeoff between the spectral efficiency (SE) and energy efficiency (EE) for the two-user Gaussian interference channel (GIC). The achievable SE-EE tradeoff region of two-user GIC is obtained by studying the interactions between the two links due to their mutual interference. Each point in the SE-EE tradeoff region corresponds to a possible scheduling strategy between the two links. The optimum SE-EE tradeoff is then identified by maximizing the EE for a given sum SE, where the maximum EE is expressed as a closed-form function of the SE. The result analytically quantifies the impact of mutual interference on the SE-EE tradeoff. It is shown that the optimum scheduling strategy depends on the interference coefficients between the two links and the target SE.

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Optimum Spectral and Energy Efficiency Tradeoff in Two-User Gaussian Interference Channel

Abstract

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