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Frame header detection method and device based on direct sequence spread spectrum and storage medium

A technology of direct sequence spread spectrum and detection method, applied in the field of communication, can solve problems such as difficulty and difficulty in determining the starting position of PHR, and achieve the effect of good reception

Pending Publication Date: 2022-03-22
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +3
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  • Claims
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Problems solved by technology

Before the receiving end receives the frame burst data packet, the receiving end does not know which spreading factor is used for sending, which brings difficulties to the receiving end to determine the spreading factor of the frame start delimiter, and naturally it is also difficult to determine the starting point of the PHR. starting position

Method used

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  • Frame header detection method and device based on direct sequence spread spectrum and storage medium
  • Frame header detection method and device based on direct sequence spread spectrum and storage medium
  • Frame header detection method and device based on direct sequence spread spectrum and storage medium

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Embodiment Construction

[0034] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0035] figure 2 It is a flowchart of a frame header detection method based on direct sequence spread spectrum provided by an embodiment of the present invention. Such as figure 2 As shown, the physical frame including the frame header also includes a preset frame start delimiter, and the method includes:

[0036] Step S21, using multiple despreading methods to despread the received data respectively, so as to collect bit correlation values ​​in the bit queue for each despreading method, wherein the multiple despreading methods target multiple spreading factors , the bit-relat...

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Abstract

The embodiment of the invention provides a frame header detection method and device based on direct sequence spread spectrum and a storage medium, and belongs to the technical field of communication. The method comprises the steps that received data are despread in multiple despreading modes, so that bit correlation values are collected in a bit queue for each despreading mode, the multiple despreading modes aim at multiple spreading factors, and the bit correlation values in the bit queues are arranged according to the collected sequence; for each dispreading mode, comparing the full bit queue with a preset frame start delimiter, the number of bit correlation values in the full bit queue being equal to the number of bits of the frame start delimiter; and when the full bit queue is the same as the preset frame start delimiter, obtaining the spreading factor of the frame header and the initial position of the frame header according to the full bit queue which is the same as the preset frame start delimiter. According to the invention, frame header detection can be completed simply and rapidly.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a frame header detection method, device and storage medium based on direct sequence spread spectrum. Background technique [0002] Direct Sequence Spread Spectrum (DSSS) technology, referred to as direct spread technology, is to encode one bit of data into a multi-bit sequence, called a "chip". For example, data bit "0" is encoded with chip "00100111000", data bit "1" is encoded with chip "11011000111", and data string "010" is encoded as "00100111000", "11011000111", "00100111000". [0003] The power meter reading system uses the frame burst method for communication. figure 1 It is a frame burst structure adopted in the prior art. Such as figure 1 As shown, the power meter reading burst frame structure consists of three parts, namely, a synchronization header (abbreviation: SHR), a physical layer frame header (abbreviation: PHR) and a physical layer service dat...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L69/22H04B1/707H04Q9/00
CPCH04L1/0036H04L69/22H04B1/707H04Q9/00H04Q2209/60Y02D30/70
Inventor 胡毅赵亚红赵旭张玉冰甘杰
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY
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