Symbol synchronization method, device, receiver device and storage medium

A technology of symbol synchronization and synchronization position, which is applied in the field of deep learning and can solve problems such as system data synchronization errors and symbol synchronization position missing

Active Publication Date: 2021-10-15
ZHUHAI JIELI TECH
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  • Claims
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Problems solved by technology

[0004] However, when the above method is used to determine the symbol synchronization position, because the OFDM symbol is affected by noise and multipath effects, the determined symbol synchronization position is not in the CP, resulting in system data synchronization errors

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  • Symbol synchronization method, device, receiver device and storage medium
  • Symbol synchronization method, device, receiver device and storage medium
  • Symbol synchronization method, device, receiver device and storage medium

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Embodiment Construction

[0053]In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0054] The symbol synchronization method provided in this application can be applied to receiver equipment, and the above-mentioned receiver equipment can be base station equipment of types such as macro base stations, micro base stations, and small base stations, and is not limited here; the above-mentioned base station equipment can be The base station equipment may also be the ground station equipment in satellite communication, or the equipment in the Internet of Things, which is not limited here. Optionally, the base station may be a Base Transceiver Station (BTS for s...

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Abstract

The present application relates to a symbol synchronization method, device, receiver equipment and storage medium. The receiver equipment performs time-domain sampling on the received signal to obtain a time-domain sampling sequence; then, the preset local sequence and time-domain sampling sequence are used. Carry out correlation calculation to obtain the cross-correlation value of each sampling point in the time-domain sampling sequence; and obtain the cumulative correlation value of each sampling point based on the cross-correlation value of each sampling point; the cumulative correlation value is the cross-correlation value of the sampling point and the sampling point The sum of the cross-correlation values ​​of the previous preset sampling points; finally, the sampling point corresponding to the maximum of all accumulated correlation values ​​is determined as the target sampling point, and the symbol synchronization position is determined according to the target sampling point. Using the above method can reduce the receiving delay of the receiver, and can filter out the influence of noise and multipath effect, improve the accuracy of symbol synchronization position, and ensure the normal data synchronization of the receiver.

Description

technical field [0001] The present application relates to the technical field of deep learning, in particular to a symbol synchronization method, device, receiver equipment and storage medium. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technology, by dividing the channel into several orthogonal sub-channels, and converting high-speed data signals into parallel low-speed sub-data streams, and then modulating to transmit on each subchannel. The OFDM system has the characteristics of high spectrum efficiency and strong anti-multipath interference ability, and has been widely used in mobile wireless communication systems. The OFDM system needs to meet the strict orthogonality of adjacent sub-channel spectrum, so it is extremely sensitive to the deviation of symbol synchronization. Therefore, the windowing start position of Fast Fourier Transformation (FFT) often has an important impact on system performance. If...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2663
Inventor 唐德刚朱嘉俊
Owner ZHUHAI JIELI TECH
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