一种确定时间偏移的方法及装置制造方法及图纸

一种确定时间偏移的方法及装置，所述方法包括：位于头端的设备根据接收到的信号，获得时域信号；然后，根据时域信号中自第q个符号起的预定数量个符号的峰均比值的大小，确定时间偏移，其中，第q个符号的峰均比值大于预定阈值。提供了一种新的确定时间偏移的方法，利用了位于头端的设备获得的时域信号具有更强的抗频偏、相噪等干扰能力的优点。该确定时间偏移的方法既可以用于初始测距，又可以用于周期测距，从而保证所有终端发送的信号到达位于头端的设备的时刻是对齐的，进而保证多点接入通信系统正常通信。

A method and device for determining time offset

A method and device for determining the time offset includes: the device at the head end obtains the time domain signal based on the received signal; then, the time offset is determined according to the size of the peak mean ratio of the predetermined number of symbols in the time domain signal from the Q symbol, in which the peak to average ratio of the Q symbol is greater than that of the time domain signal. A predetermined threshold value. A new method of determining time offset is provided, and the time domain signal obtained by the device at the head end has the advantage of stronger anti frequency offset, phase noise and so on. The method of determining the time offset can be used for both initial distance measurement and periodic range finding, thus ensuring that all terminals sent by the terminals are aligned at the time of the device located at the head end, thus ensuring the normal communication of the multipoint access communication system.

【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。

【技术保护点】
PCT国内申请，权利要求书已公开。

【技术特征摘要】
【国外来华专利技术】PCT国内申请，...

【专利技术属性】
技术研发人员：欧阳涛，拉赫曼赛义德·哈比，司小书，王凡，雷浩，
申请(专利权)人：华为技术有限公司，
类型：发明
国别省市：广东,44