摘要
针对多径信道下OFDM信号识别难的问题,提出一种利用OFDM信号的3阶累积量近似为0,而单载波信号的3阶累积量为非零值的特征来识别OFDM信号与单载波信号的算法.仿真结果表明,该算法具有一定的抗多径能力,并能够有效提高识别性能.
In order to solve the problem of the modulation identification of OFDM siginal in multipath channel,an algorithm was proposed due to approximate zero of the three-order cumulant of OFDM signal and nonzero value of single carrier signals,three-order cumulant could be used to classify the algorithm of OFDM signal and single carrier signals.Simulation results showed that this algorithm possesses the ability to eliminate multipath and improves classification performance.
出处
《郑州轻工业学院学报（自然科学版）》
CAS
2010年第6期122-124,共3页
Journal of Zhengzhou University of Light Industry:Natural Science
关键词
调制盲识别算法
高阶累积量
多径信道
OFDM信号
modulation blind identification algorithm
higher-order cumulant
multipath channel
OFDM signal
