摘要
作为第4代移动通信系统的核心技术,正交频分复用已成为当今高速无线通信领域的研究热点.但是正交频分复用调制中存在高峰均功率比,为其实用化设置了障碍.介绍了峰均功率比的概念,对目前降低峰均功率比的3类方法,即信号畸变技术、信号扰码技术、编码技术进行了研究,并利用MATLAB进行了蒙特卡罗仿真比较.
As a core technology of 4G mobile communication system,Orthogonal Frequency Division Multiplexing（OFDM） has recently been focused on in high-data-rate wireless communica-tion research.The disadvantage of High Peak-to-Average Power Ratio（PAPR） in OFDM system is one of the main obstacles to limit wide applications of OFDM.The definition of PAPR is firstly introduced.The techniques on reducing PAPR,including the methods of signal distortion,signal scrambling,and coding technique are described.Finally,these techniques are simulated with MATLAB.
出处
《上海电力学院学报》
CAS
2010年第5期469-472,共4页
Journal of Shanghai University of Electric Power
