摘要
正交频分复用(OFDM)技术的一个主要缺点是其信号在符号周期内呈现较大的动态范围,导致功率放大器效率降低.文中针对BPSK调制OFDM信号,研究了不同输入概率数据OFDM信号的统计特性,分析了输入概率对信号峰值因子的影响,推导了信号的相关特性,并通过仿真进行了验证分析。
One of major drawbacks of orthogonal frequency division multiplexing (OFDM) technique is the huge dynamic range of the signal during symbol period,which degrades the efficiency of the power amplifier.Focusing on the BPSK modulated OFDM signal,this paper investigates its statistical characteristics for different probability input data,analyzes the influences of the probability on.the crest factor,derives the correlation properties of the signal and testifies the results with simulations.
出处
《通信技术》
2006年第S1期4-6,共3页
Communications Technology
关键词
正交频分复用
统计特性
峰值因子
相关特性
OFDM
statistical characteristics
crest factor
correlation properties
