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

5 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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title = "Optimum Spectral and Energy Efficiency Tradeoff in Two-User Gaussian Interference Channel",

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.",

author = "Donghong Cai and Jingxian Wu and Jing Yang and Pingzhi Fan",

note = "Funding Information: Manuscript received November 4, 2017; accepted December 13, 2017. Date of publication December 21, 2017; date of current version June 19, 2018. This work was supported in part by the National Science Foundation of China under Grant 61471302, in part by 111 Project under Grant 111-2-14, and in part by the U.S. National Science Foundation under Grant ECCS-1405403. The associate editor coordinating the review of this paper and approving it for publication was K. Adachi. (Corresponding author: Donghong Cai.) D. Cai and P. Fan are with the Institute of Mobile Communications, Southwest Jiaotong University, Chengdu 610031, China (e-mail: cdhswjtu@163.com; pzfan@swjtu.edu.cn). Publisher Copyright: {\textcopyright} 2012 IEEE.",

year = "2018",

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doi = "10.1109/LWC.2017.2785804",

language = "English (US)",

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journal = "IEEE Wireless Communications Letters",

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AU - Cai, Donghong

AU - Wu, Jingxian

AU - Yang, Jing

AU - Fan, Pingzhi

N1 - Funding Information: Manuscript received November 4, 2017; accepted December 13, 2017. Date of publication December 21, 2017; date of current version June 19, 2018. This work was supported in part by the National Science Foundation of China under Grant 61471302, in part by 111 Project under Grant 111-2-14, and in part by the U.S. National Science Foundation under Grant ECCS-1405403. The associate editor coordinating the review of this paper and approving it for publication was K. Adachi. (Corresponding author: Donghong Cai.) D. Cai and P. Fan are with the Institute of Mobile Communications, Southwest Jiaotong University, Chengdu 610031, China (e-mail: cdhswjtu@163.com; pzfan@swjtu.edu.cn). Publisher Copyright: © 2012 IEEE.

PY - 2018/6

Y1 - 2018/6

N2 - 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.

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

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