CAJ | 학술논문

提出了一种新改进的正交频分复用（ Orthogonal Frequency Division Multiplexing ， OFDM ）系统时域帧同步检测方法。该方法使用门限机制的延时相关帧检测原理，利用训练序列的互相关信息共同完成系统的帧同步检测。给出了在不同信道和不同信噪比环境下所进行的仿真结果，仿真结果表明，该方法解决了 Schmidl＆Cox 定时同步算法出现的峰值平台和H 。 Minn算法的多个高旁峰值问题，提高了同步的精确度，可以对抗较大的频偏，适应性增强，且易于实现。
제출료일충신개진적정교빈분복용（ Orthogonal Frequency Division Multiplexing ， OFDM ）계통시역정동보검측방법。해방법사용문한궤제적연시상관정검측원리，이용훈련서렬적호상관신식공동완성계통적정동보검측。급출료재불동신도화불동신조비배경하소진행적방진결과，방진결과표명，해방법해결료 Schmidl＆Cox 정시동보산법출현적봉치평태화H 。 Minn산법적다개고방봉치문제，제고료동보적정학도，가이대항교대적빈편，괄응성증강，차역우실현。
A method of newly improved time?domain OFDM frame synchronization is presented,which uses the detection principle associated with frame delay of a threshold mechanism to complete the frame synchronization detection by using the inter?related informa?tion of a training sequence. This paper presents the simulation results under different channels and different SNRs. Simulation results show that the new method solves the problem of peak platform appeared in Schmidl & Cox timing synchronization algorithm and the multiple high peak in H.Minn algorithm.It can improve the accuracy of synchronization,mitigates large frequency offsets,and provides more adaptability.Additionally,it can be implemented easily.