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An anti-multipath and anti-jamming signal receiving method based on time division multiple access

A technology of signal reception and time division multiple access, applied in channel estimation, multi-frequency code system, baseband system components, etc., can solve problems such as lack of communication transmission methods, and achieve the effect of fast false negative, low false positive and low capture

Active Publication Date: 2021-08-31
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is still a lack of such a communication transmission method in the prior art

Method used

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  • An anti-multipath and anti-jamming signal receiving method based on time division multiple access
  • An anti-multipath and anti-jamming signal receiving method based on time division multiple access
  • An anti-multipath and anti-jamming signal receiving method based on time division multiple access

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Embodiment Construction

[0065] refer to figure 1 and figure 2 , a kind of anti-multipath anti-jamming signal receiving method based on time division multiple access, comprises the following steps:

[0066] Step 1: Radio waves pass through the antenna to generate radio frequency analog signals;

[0067] Step 2: The radio frequency channel module generates an intermediate frequency analog signal according to the frequency hopping frequency sequence information and the radio frequency analog signal;

[0068] Wherein, the frequency hopping frequency sequence information comes from the data analysis module or the capture module; only when the data analysis module does not output the frequency hopping frequency sequence information, the radio frequency channel module generates the intermediate frequency analog signal according to the frequency hopping frequency sequence information of the capture module and the radio frequency analog signal ; The capture module outputs frequency hopping frequency sequen...

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Abstract

The invention discloses an anti-multipath anti-interference signal receiving method based on time division multiple access, belonging to the technical field of radio transmission and communication. In this method, radio waves generate digital signals through antennas, radio frequency channel modules, and A / D conversion, then estimate and correct the frequency offset and time offset of the digital signals, and then perform cyclic prefix removal and FFT on the corrected digital signals Then remove the left and right guard subcarriers and perform descrambling operations to obtain the unscrambled frequency domain sequence, then perform channel estimation on the unscrambled frequency domain sequence, obtain the channel information vector and perform channel equalization, demodulation, deinterleaving, and channel decoding Calculate to obtain the received data; finally process the received data, output the source data and frequency hopping frequency sequence information, and the frequency hopping frequency sequence information will be fed back to the radio frequency channel module. The performance of the method is reliable and stable, and can meet the requirements of the wireless communication field.

Description

technical field [0001] The invention relates to the technical field of radio transmission and communication, in particular to an anti-multipath and anti-jamming signal receiving method based on time division multiple access. Background technique [0002] The number of users supported by the traditional continuous wave transmission system is small, and due to the continuous transmission of radio waves, the concealment ability is weak. The burst transmission technology can effectively improve the anti-interception and anti-jamming capabilities of the communication system by shortening the residence time of the signal in space. On this basis, the system assigns different time slots to each node, and each node in the network transmits signals in its own working time slot. This system has the characteristics of high channel utilization and low equipment cost. [0003] In addition, the OFDM communication system has the advantage of anti-multipath interference, and the frequency-h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/715H04B1/7156H04B1/00H04L25/02H04L27/26
CPCH04B1/0007H04B1/715H04B1/7156H04B2001/71563H04L25/025H04L27/2602H04L27/2655H04L27/2688
Inventor 扈鹏马鹏飞杜明汪沛陈远友张望成
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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