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Burst signal tracking method and system suitable for variable spreading factor modulation

A technology of spreading factor and burst signal, which is applied in the transmission system, electrical components, etc., can solve the problem of shortening the signal transmission distance, and achieve the effects of low tracking power consumption, high tracking sensitivity, and simplified complexity

Active Publication Date: 2021-12-31
深圳市力合微电子股份有限公司
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Problems solved by technology

Conversely, using a shorter spread spectrum sequence length has a higher data transmission rate signal, but the signal transmission distance is also shortened

Method used

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  • Burst signal tracking method and system suitable for variable spreading factor modulation
  • Burst signal tracking method and system suitable for variable spreading factor modulation
  • Burst signal tracking method and system suitable for variable spreading factor modulation

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Embodiment Construction

[0038] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments.

[0039] Such as figure 1 As shown, the preferred embodiment of the present invention discloses a method for tracking burst signals suitable for micropower wireless communication variable spreading factor modulation, characterized in that it includes the following steps:

[0040] S1: The down-converted burst signal is sent to the coherent demodulation module, and after carrier stripping is completed, it becomes a quasi-baseband signal and sent to the data buffer module;

[0041] S2: The data buffer module is used for buffering the quasi-baseband signal, and selects the signal Sn of a given length SLen from the buffer start address SAddr and sends it to the despreading module;

[0042] S3: The despreading module correlates the signal Sn with the pseudocode sequence generated by the local pseudocode generation module, completes ...

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Abstract

The invention discloses a burst signal tracking method suitable for micropower wireless communication variable spreading factor modulation. The burst signal tracking method comprises the following steps of: S1, carrying out carrier stripping on a received burst signal after down-conversion to obtain a quasi-baseband signal; S2, caching the quasi-baseband signal to obtain cached data, and selecting the cached data with the corresponding length according to a spreading factor; S3, carrying out de-spreading processing on the selected cache data; S4, performing segmentation correlation on the data after de-spreading processing, and calculating an integral result; S5, estimating the error of the carrier frequency and the code phase according to the integral result, and filtering the error; and S6, adjusting tracking parameters, and at least using the adjusted tracking parameters for updating tracking parameters adopted when the step S2 and the step S3 are executed. According to the burst signal tracking method and system provided by the invention, different spread spectrum sequences in the wireless burst signal can be de-spread, and meanwhile, a low-power-consumption design is adopted.

Description

technical field [0001] The invention relates to the technical field of spread spectrum wireless communication, in particular to a tracking method and system suitable for burst signals modulated by variable spreading factor in micropower wireless communication. Background technique [0002] Due to the advantages of anti-interference, anti-multipath and good concealment, direct sequence spread spectrum technology has been widely used in the field of wireless communication. Using a longer spread spectrum sequence can improve the sensitivity of the receiver, and the receiver can also receive signals normally when the wireless signal transmission distance is long, but the effective data rate of wireless communication transmission is reduced. Conversely, using a shorter spread spectrum sequence length has a higher data transmission rate signal, but the signal transmission distance is also shortened. With the increasingly complex application environment, it is particularly importa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04B1/7085
CPCH04B1/707H04B1/7085Y02D30/70
Inventor 刘鲲刘元成薛文通李杰陈丽恒
Owner 深圳市力合微电子股份有限公司
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