Synchronization method and device

A technology of synchronous position and starting position, which is applied in the field of communication, can solve the problems of pilot signal synchronization and synchronization threshold increase, and achieve the effect of improving synchronization performance and accuracy

Active Publication Date: 2016-08-10
大唐联诚信息系统技术有限公司
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Problems solved by technology

However, in an environment with interference, if the pilot signal cannot be synchronized due to interference, or the synchronization threshold is greatly increased, the anti-interference ability of the smart antenna system will be limited by synchronization

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  • Synchronization method and device

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Embodiment Construction

[0041] The embodiment of the present application provides a synchronization method and device, based on the fact that the pilot signal in the received baseband signal should have a strong correlation with the locally pre-stored pilot signal, and the interference signal and the locally pre-stored pilot signal should have a strong correlation. Based on the principle of weak correlation, beamforming is introduced in the synchronization process to suppress interference signals in different directions through beamforming and improve synchronization performance in interference environments.

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary ...

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Abstract

The invention provides a synchronization method and device. The synchronization method comprises steps of performing sampling on received baseband signals; determining a sampling point position of a pilot signal which is inferred through the sampling point which is used as an initial position of a time slot; performing wave beam forming on the inferred pilot signal on the basis of the inferred sampling point position of the pilot signal; performing linear correlation on the signal after the wave beam forming and the preset pilot signal to obtain a relevant power value; and determining a synchronization position on the basis of a plurality of relevant power values which are obtained through using various sampling points as initial positions of the time slot. The synchronization method and device can be used in an interfered environment, improve the synchronization performance of the system and reduce the interference on the communication by the interfered environment.

Description

technical field [0001] The present application relates to the technical field of communications, and more specifically relates to a synchronization method and device. Background technique [0002] With the development of wireless communication technology, the electromagnetic environment is becoming more and more complex. In the working frequency band of the communication system, there may be self-interference within the system or interference outside the system. Among them, the same-channel interference in the system has basically the same signal statistical characteristics as the useful signal, and cannot be eliminated by frequency domain processing methods or some methods of signal statistics. However, the existence of interference signals increases the demodulation threshold of some services. It may even cause some services to be unable to be transmitted normally. [0003] When there are interference signals in the signal received by the receiving end, beamforming can si...

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Application Information

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IPC IPC(8): H04L7/00H04B7/08
CPCH04B7/086H04L7/007
Inventor 杨远苏加加曹晏波乔元新
Owner 大唐联诚信息系统技术有限公司
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