摘要
针对具有偏移正交幅度调制的滤波器组多载波(Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation,FBMC-OQAM)系统中目前存在的定时同步算法问题,提出了一种改进的定时同步算法。该算法利用两个特殊设计的符号,将其连续通过FBMC-OQAM系统后在时域形成共轭对称特性的信号。与现有的算法相比,该算法增加了计算相关序列的长度,但减少了训练符号,还去除了高旁瓣带来的干扰。理论分析与仿真结果表明,改进算法具有更好的定时同步性能。
For the problem of timing synchronization algorithm in Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation(FBMC-OQAM)systems,an improved timing synchronization algorithm is proposed.The algorithm uses two specially designed symbols to form a signal with conjugate symmetry in the time domain after passing them through the FBMC-OQAM system continuously.Compared with the existing algorithm,the length of the calculated correlation sequence is increased,but the training symbols are reduced,and the interference caused by high side peak is also removed.Theoretical analysis and simulation results show that the improved algorithm has better timing synchronization performance.
作者
沈麟
颜彪
刘为波
丁宇舟
SHEN Lin;YAN Biao;LIU Weibo;DING Yuzhou(School of Information Engineering,Yangzhou University,Yangzhou 225009,China)
出处
《电讯技术》
北大核心
2023年第2期255-259,共5页
Telecommunication Engineering
基金
国家自然科学基金资助项目(61601403)。
