一种新型的超宽带同步捕获方案设计

New Scheme Design of Synchronization and Acquisition for UWB Signal

基于非相干能量检测接收系统并结合传统的相干接收的滑动相关搜索思想与数据导频辅助方法,提出了三路串并行结合导频辅助的同步捕获方案.首先,在基带电路利用一路可控积分器,并采用步长搜索来获取系统的同步时钟.然后,通过对其他两路积分器进行同步搜索,来获取细同步信号和定位信息.给出了该同步方案的工作流程和关键模块,并进行时序仿真与波形分析.

A novel and realizable scheme of three ways serial-parallel combination and pilot-assisted synchro- nization and acquisition was proposed in order to realize the synchronization and acquisition of the receiver, which was combined by the non-coherent energy detection of receiver system and the search idea of sliding correlation and pilot-assisted of the coherent receiver system. The synchronization clock can be obtained by using the search idea of step-size on the base-band circuit through the first controllable integrator, and the exquisite synchroniza- tion and location information were obtained by using synchronization search through the rest controllable inte- grators. The key module of circuit realization and the definite process of the scheme of synchronization and ac- quisition were simulated and analyzed, and it was verified to be feasible by analysis of the time-simulation wave.