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Generation method for wide-interval frequency hopping sequence

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

Inactive Publication Date: 2012-10-10
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 generation method for a wide-interval frequency hopping sequence. The generation method is an improvement on a dual frequency band method and can be used for carrying out wide-interval processing on a non-repetitive hopping sequence X which is freely given, defined on F and has a period of L to obtain the wide-interval frequency hopping sequence with the length of 2L. The generation method disclosed by the invention has the beneficial effects that for overcoming the defect that the utilization rate of frequency slots is low in the dual frequency band method, the wide-interval sequence is obtained by changing the inserting position of a frequency point and connecting two sequences on the dual frequency band. According to the wide-interval sequence, all frequency slots are utilized, the requirement of wide interval is met and the hamming self-correlation and better hamming cross correlation of an original sequence are maintained. According to the wide-interval frequency hopping sequence generated by the generation method disclosed by the invention, the anti-jamming performance of the system can be enhanced.

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 Applications(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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