一种适合同步与信道估计的信号帧结构设计

Novel Frame Structure for Synchronization and Channel Estimation

提出了一种结合PN序列和Golay互补序列的超帧结构,并给出了相应的同步和信道估计的实现方法。在进行同步时,先采用PN序列差分相关算法进行粗同步,再利用交替插入的Golay互补序列进行细同步。在进行信道估计时,利用Golay互补序列的理想非周期自相关性质进行时域信道估计。仿真证明,超帧结构同时包含PN序列和Golay序列,在同步和信道估计时能兼顾这两种序列的优点。

In this paper,a new super-frame structure based on PN sequence and Golay complementary sequences is proposed and studied.Methods for synchronization and channel estimation are also presented,in which differential correlation of PN sequence is used for frame synchronization and coarse estimation of Carrier Frequency Offset(CFO).Golay complementary sequences are adopted for fine CFO estimation and channel estimation.Simulation results show that the synchronization and channel estimation based on the proposed frame structure are superior in acquisition range and estimation precision.