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超宽带通信技术近年来受到广泛关注,其中同步问题系统性能的关键因素。研究了超宽带通信系统的定时同步问题,提出了一种粗同步与细同步相结合的同步算法,以TH-UWB-PAM信号系统为例,首先利用脏模板理论进行粗捕获,完成帧一级的同步,然后在捕获的基础上利用滑动相关完成细同步,通过对加性高斯白噪声(AWGN)和超宽带(UWB)多径信道进行了同步算法性能仿真,实验结果表明了该同步算法的可行性,能够获得复杂度和同步性能的良好折中,且在一定信噪比条件下能获得良好的同步精度。
Ultra-wideband communications technology has received widespread attention in recent years, where synchronization is a key factor in system performance. The problem of timing synchronization in UWB communication system is studied. A synchronization algorithm based on coarse synchronization and fine synchronization is proposed. Taking the TH-UWB-PAM signal system as an example, the coarse- Then the fine synchronization is accomplished by using the sliding correlation based on the acquisition. The performance of the synchronization algorithm is simulated through the additive white Gaussian noise (AWGN) and ultra wideband (UWB) multipath channels. The experimental results show that the synchronization algorithm Feasibility, to obtain a good compromise between complexity and synchronization performance, and in a certain signal to noise ratio can get good synchronization accuracy.