摘要
针对正交频分复用具有高速的数据传输率和良好的抗多径衰落能力,但其信号峰值功率过大的问题,将目前现有的峰值功率优化方法分3类进行论述,分别为信号预畸变、编码类和多信号表示,并对各类方法的性能进行系统地分析;指出未来研究的2个主要方向,即针对现有方法中存在的不足,寻求尽量不损失系统性能的解决方案;基于不同领域研究对象的相似性,尝试多领域技术的融合,为解决峰值功率问题提供新思路。
Orthogonal frequency division multiplexing（OFDM） had attracted much attention due to its high speed data rate and the immunity to multipath fading, but the large peak power of OFDM signals was one of the main obstacles obstructing its development and application. As for the peak power problem of OFDM systems, three kinds of existing peak power optimization schemes were summarized, such as signal distortion technologies, coding technologies and multiple signal representation technologies. The performances of these schemes were analyzed. In the future researches, for the shortcomings of these existing schemes, the solutions with no system per- formanee degradation should be searched, and multi-field fusion technology based on the similarity among the objects from different research fields would provide novel ideas for solving peak power problem.
作者
王灵垠
WANG Lingyin(School of Information Science and Engineering,University of Jinan,Jinan 250022 ,Chin)
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2016年第5期383-390,共8页
Journal of University of Jinan(Science and Technology)
基金
国家自然科学基金(61501204)
山东省优秀中青年科学家奖励基金(BS2013DX014)
关键词
正交频分复用
峰值功率
信号预畸变
编码
多信号表示
orthogonal frequency division multiplexing
peak power
signal distortion
coding
multiple signal representation
