Energy Efficiency Analysis of MISO-OFDM Communication Systems Considering Power and Capacity Constraints

被引：18

作者：

Ge, Xiaohu ^{[1
]}

Hu, Jinzhong ^{[1
]}

Wang, Cheng-Xiang ^{[2
]}

Youn, Chan-Hyun ^{[3
]}

Zhang, Jing ^{[1
]}

Yang, Xi ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Elect & Informat Engn, Wuhan 430074, Hubei, Peoples R China

[2] Heriot Watt Univ, Sch Engn & Phys Sci, Joint Res Inst Signal & Image Proc, Edinburgh EH14 4AS, Midlothian, Scotland

[3] Korea Adv Inst Sci & Technol, GRID Middleware Res Ctr ICC, Taejon 305, South Korea

来源：

MOBILE NETWORKS & APPLICATIONS | 2012年 / 17卷 / 01期

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

multi-input single-output (MISO); orthogonal frequency division multiplexing (OFDM); energy efficiency; capacity analysis;

D O I：

10.1007/s11036-011-0296-4

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, the energy efficiency of multi-input single-output and orthogonal frequency division multiplexing (MISO-OFDM) communication systems with power and capacity constraints is investigated. By formulating the power allocation problem of MISO-OFDM communication systems, the minimum subchannel transmission power is analyzed with power and capacity constraints. Simulation results indicate that there exists a specific minimum subchannel capacity threshold. Moreover, the energy efficiency of MISO-OFDM communication systems starts to increase only when the minimum subchannel capacity exceeds the specific threshold.

引用

页码：29 / 35

页数：7

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