OFDM-UWB系统中的能量差定时同步算法

Energy-differences Scheme of Timing Synchronization for OFDM-UWB System

根据OFDM-UWB系统的同步要求,提出了一种能量差(E-D iff)的定时算法来解决OFDM-UWB系统中符号定时同步的问题。这个算法利用MBOA联盟建议的帧同步序列,首先累积多径能量,然后比较两个连续的累积能量样本差与门限的值来辨别出第一有效多径分量,从而定位FFT窗口开始的准确位置。

This paper proposes an Energy-differences scheme of liming synchronization for OFDM-UWB system. Based on the special frame synchronization sequence proposed by MEOA, we attempt to pinpoint the exact start of the Fast Fourier Transform （FFT） window by first accumulating multi-path energies and then discering for first significant multi-path components through threshold comparison between consecutive accumulated energy differences.