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

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...

AI Technical Summary

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

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