信息隐藏技术在OFDM系统峰值功率问题中的应用研究

项目名称： 信息隐藏技术在OFDM系统峰值功率问题中的应用研究

项目编号： No.61501204

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 王灵垠

作者单位： 济南大学

项目金额： 19万元

中文摘要： OFDM技术由于具有较强的抗多径衰落能力和较高的频谱利用率，近年来已被广泛地应用到无线通信的很多领域。但是，峰值功率问题一直阻碍着该技术的发展和应用。针对OFDM系统的这一缺陷，虽然提出过一些解决方案，但都存在明显不足。本项目主要借助信息隐藏理论及其关键技术，研究OFDM系统中峰值功率问题的解决方案，主要研究内容包括：1、基于数字水印置乱技术的峰值功率优化方法；2、基于隐写技术的峰值功率优化方法；3、基于信息隐藏技术的概率类峰值功率优化改进方法。本项目的目标是为解决OFDM系统中的峰值功率问题提供新的思路，为OFDM系统的未来应用铺平道路，因而具有很好的理论意义和实际价值。

中文关键词： OFDM系统；峰均功率比；信息隐藏

英文摘要： Orthogonal frequency division multiplexing (OFDM) has been applied in many fields of wireless communications because of its robustness against multipath fading channels and high spectral efficiency. But the peak power problem in OFDM systems limits its development and applications. Although several schemes against peak power problem have been proposed, some drawbacks of these proposed schemes can be easily found. In this research, the principles and the key techniques of information hiding are employed for studying the solutions to peak power problem in OFDM systems. The research focuses on the following topics: 1. the peak power optimization schemes based on scramble techniques of watermarking; 2. the peak power optimization schemes based on steganography; 3. the improved probabilistic peak power optimization schemes based on information hiding. The aims of this research are to provide novel ideas for solving peak power problem in OFDM systems and to pave the way for the future applications of OFDM systems, which has theoretical significance and practical value.

英文关键词： OFDM Systems;Peak-to-Average Power Ratio;Information Hiding