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Generation method for wide-interval frequency hopping sequence

A technology of frequency hopping sequence and wide interval, applied in the direction of electrical components, transmission systems, etc., can solve the problem of failure to use wide interval frequency hopping sequence, and achieve the effect of enhancing anti-interference performance and good Hamming cross-correlation

Inactive Publication Date: 2014-07-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The dual frequency band method proposed by Hong Fuming and Zhang Shiping in the paper obtains a frequency hopping sequence that satisfies the wide interval requirement by hopping between sub-frequency bands and its dual sub-frequency bands. Its shortcoming is that there are an even number of narrow points in the original sequence When , the obtained wide interval frequency hopping sequence fails to use all the frequency points of the sub-band and its even sub-band

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  • Generation method for wide-interval frequency hopping sequence
  • Generation method for wide-interval frequency hopping sequence
  • Generation method for wide-interval frequency hopping sequence

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Embodiment Construction

[0024] The m-sequence needs to be transformed first to obtain the corresponding frequency hopping sequence. Usually, the binary-to-decimal conversion method is used for code transformation, that is, the adjacent binary digits of the m-sequence are converted into decimal values, and then the wide-interval processing is performed. Widely spaced frequency hopping sequences. Wherein, the generation method of wide interval frequency hopping sequence comprises the following steps:

[0025] It is required that the interval between any adjacent frequency points is not less than , , the wide interval processing steps are as follows:

[0026] Step 1. Set the frequency hopping frequency band into two dual subbands and ,in, , ,in q is the number of available frequency points;

[0027] Step 2. In the sub-band A frequency hopping sequence (hereinafter referred to as "sub-frequency hopping sequence") with a length of L established above is denoted as ,in, ;

[0028] in...

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Abstract

The invention discloses a method for generating a wide interval frequency hopping sequence, which is an improvement based on the dual frequency band method, and can perform wide interval processing on any given non-repetitive frequency hopping sequence X with a period defined in the above, and obtain A widely spaced frequency hopping sequence of length 2L. The positive effect of the present invention is: the present invention aims at the defect that the frequency slot utilization rate of the dual frequency band method is low, by changing the insertion position of the frequency point, connecting the sequences on the two dual frequency bands, the wide interval sequence obtained utilizes all the frequency slots, And meet the wide interval requirements, while maintaining the Hamming autocorrelation and better Hamming cross-correlation of the original sequence. The wide interval frequency hopping sequence generated by the method of the invention can enhance the anti-jamming performance of the system.

Description

technical field [0001] The invention belongs to the field of frequency hopping communication, in particular to a method for generating a wide interval frequency hopping sequence. Background technique [0002] The basic idea of ​​the frequency hopping system is to use the frequency hopping sequence to control the random hopping of the carrier to avoid the channel where the interference is located. Therefore, the design of the frequency hopping sequence has become one of the key technologies of frequency hopping communication. Designing a frequency hopping sequence with excellent performance not only requires the sequence to have good Hamming correlation characteristics and randomness, but also requires a certain wide interval to enhance the anti-jamming performance of the system. Therefore, in the practical application of frequency hopping communication technology, the wide interval of frequency hopping sequence should be put forward firstly. [0003] For the wide interval p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7136
Inventor 吕明谭卓越秦永利
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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