Frame synchronization method and device of IEEE802.15.4g MR-OFDM in large frequency offset environment

An ieee802.15.4gmr-ofdm, frame synchronization technology, applied in multi-frequency code systems, complex mathematical operations, modulated carrier systems, etc., can solve the problem of unsatisfactory frame synchronization processing, achieve excellent synchronization performance and increase complexity Effect

Active Publication Date: 2021-08-13
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +3
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Problems solved by technology

But it is not ideal for frame synchronization processing under large frequency deviation

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  • Frame synchronization method and device of IEEE802.15.4g MR-OFDM in large frequency offset environment
  • Frame synchronization method and device of IEEE802.15.4g MR-OFDM in large frequency offset environment
  • Frame synchronization method and device of IEEE802.15.4g MR-OFDM in large frequency offset environment

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] figure 1 It is a schematic diagram of steps of a frame synchronization method of IEEE802.15.4g MR-OFDM in a large frequency offset environment provided by an embodiment of the present invention, as shown in figure 1shown. A frame synchronization method of IEEE802.15.4g MR-OFDM in a large frequency offset environment, the frame synchronization method comprising:

[0035] S01, acquire IEEE802.15.4g MR-OFDM signal;

[0036] The IEEE802.15.4g MR-OFDM signal obtained here may come from the r...

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Abstract

The invention relates to the technical field of frame synchronization. The embodiment of the invention provides a frame synchronization method and device for IEEE802.15.4g MR-OFDM in a large frequency offset environment. The method comprises the following steps: obtaining an IEEE802.15.4g MR-OFDM signal; according to the frequency offset range of the IEEE802.15.4g MR-OFDM signal and the subcarrier interval in the preamble sequence, mapping the possible offset position of each single-tone signal in the preamble sequence to a power window, wherein the power window comprises a plurality of subcarrier positions; superposing the power values of the power windows corresponding to all the single-tone signals in the leader sequence; determining a subcarrier position according to the superposed power value; and performing synchronization position correction on the determined subcarrier position in the range of the subcarrier interval to obtain a frame synchronization position. According to the implementation mode provided by the invention, the synchronization efficiency of the IEEE802.15.4g MR-OFDM signal in a large frequency offset environment is improved.

Description

technical field [0001] The present invention relates to the technical field of frame synchronization, in particular to a frame synchronization method for IEEE802.15.4g MR-OFDM in a large frequency deviation environment, a frame synchronization device for IEEE802.15.4g MR-OFDM in a large frequency deviation environment and An electronic device. Background technique [0002] IEEE802.15.4g MR-OFDM is a relatively mature ultra-low power wireless communication system used in the field of smart grid measurement and control. Frame synchronization is crucial to the performance of a communication system. The existing frame synchronization algorithm research of IEEE802.15.4g MR-OFDM is based on the characteristics of STF structure repetition proposed by the 802.11 synchronization method, and a subtraction method is proposed, because STF repeats at the end The segment is opposite to the previous sign, so there will be a peak value to judge the position of STF, but this method does not...

Claims

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Application Information

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IPC IPC(8): H04L27/26G06F17/14
CPCG06F17/142H04L27/265H04L27/2656H04L27/2659H04L27/266
Inventor 张凯航王鑫
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY
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