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

被引：7

作者：

Cai, Donghong ^{[1
]}

Wu, Jingxian ^{[2
]}

Yang, Jing ^{[3
]}

Fan, Pingzhi ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Inst Mobile Commun, Chengdu 610031, Sichuan, Peoples R China

[2] Univ Arkansas, Dept Elect Engn, Fayetteville, AR 72701 USA

[3] Penn State Univ, Sch Elect Engn & Comp Sci, University Pk, PA 16802 USA

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2018年 / 7卷 / 03期

基金：

美国国家科学基金会;

关键词：

Spectral efficiency; energy efficiency; Gaussian interference channel; SYSTEMS;

D O I：

10.1109/LWC.2017.2785804

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

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.

引用

页码：468 / 471

页数：4

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