標題: Energy-Efficient Power Loading Algorithms for Uniform-Rate OFDM Systems
作者: Ma, Chun-Ying
Huang, Chia-Chi
電信工程研究所
Institute of Communications Engineering
關鍵字: Energy efficiency;power loading;uniform-rate OFDM;green radio
公開日期: 2014
摘要: In recent years, energy-efficiency has become one of the most critical issues in wireless communications. Although it is important and practical to design an energy-efficient power loading algorithms for uniform-rate orthogonal frequency division multiplexing (OFDM) systems, the problem has not been explored in literature. The terminology uniform-rate in this paper means that each subcarrier adopts the same modulation scheme. To this end, we propose an adaptive power-loading algorithm to maximize the energy-efficiency for a uniform-rate OFDM system in this paper. To reduce the complexity, a sub-optimum solution is proposed. The numerical results show that the sub-optimum solution is close to the optimum solution. We also show that by carefully determining the modulation scheme, energy efficiency can be extensively improved.
URI: http://hdl.handle.net/11536/135340
ISBN: 978-1-4799-3083-8
ISSN: 1525-3511
期刊: 2014 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC)
起始頁: 1259
結束頁: 1263
Appears in Collections:Conferences Paper