Wide gap frequency hopping sequence generation method based on ranking and resetting

A frequency hopping sequence and generation method technology, applied in the direction of electrical components, transmission systems, etc., can solve the problems of deterioration of frequency hopping sequence uniformity, poor sequence uniformity, degradation of frequency hopping interval distribution characteristics, etc., and achieve excellent interval distribution uniformity, performance across the board

Active Publication Date: 2016-06-22
NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

Because the middle part of the frequency band is not used in the middle frequency band method, the sequence uniformity is poor and the spectrum utilization rate is low; the random translation substitution method encounters a narrow point in frequency hopping (the frequency interval between two adjacent frequency hopping frequency points is less than a predetermined value), then Translate according to the current frequency hopping code value, and move to a position that meets the wide interval requirement. Random translation instead of wide interval frequency hopping sequence has better Hamming correlation, but the translation process makes the uniformity of the freq

Method used

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  • Wide gap frequency hopping sequence generation method based on ranking and resetting
  • Wide gap frequency hopping sequence generation method based on ranking and resetting
  • Wide gap frequency hopping sequence generation method based on ranking and resetting

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0017] The technical solution of the present invention is: firstly sort the pseudo-random sequence in segments to generate a serial number sequence, and then reset the serial number sequence with a wide interval to construct a wide interval sequence. details as follows:

[0018] (1) For the existing pseudo-random sequences with excellent uniformity, that is, the results of the chi-square test and the continuity test of the sequence are all in the affirmative domain of the uniform hypothesis with a confidence level of 95%, such as the pseudo-random sequence of the chaotic map or the pseudo-random sequence of the block encryption. The random sequence is truncated and divided according to the number of frequencies in the frequency hopping frequency point set, and the part that...

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Abstract

The invention provides a wide gap frequency hopping sequence generation method based on ranking and resetting. According to the invention, a prior pseudorandom sequence is ranked in a segmented manner according to the number of frequency points in a frequency set and a sequence number sequence is generated. Then the sequence number sequence is subjected to gap resetting according to gap width, so that a wide gap frequency hopping sequence is generated. The frequency hopping sequence generated according to the invention can meet requirements for wide gaps and has good sequence uniformity, Hamming relevance and gap distribution uniformity, and overcomes a shortcoming that a prior wide gap frequency hopping sequence always has poor statistics performance partially.

Description

technical field [0001] The invention belongs to the technical field of frequency hopping communication and is used for the design of wide interval frequency hopping sequences. Background technique [0002] Frequency hopping communication is a spread spectrum communication method that uses pseudo-random sequences to control carrier frequency hopping. It has good anti-interference ability and multi-access networking performance, and is widely used in military and civilian communication fields. In specific engineering applications, wide interval frequency hopping is usually required, that is, the frequency interval between two adjacent frequency hopping frequency points is greater than a predetermined value. Widely spaced frequency hopping can better resist narrowband interference, tracking interference, blocking interference and multipath fading. Frequency hopping in frequency hopping communication is controlled by frequency hopping sequence, which has a decisive impact on th...

Claims

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Application Information

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IPC IPC(8): H04B1/713H04B1/7136H04B1/715
CPCH04B1/713H04B1/7136H04B1/715H04B2001/7152
Inventor 万佳君陈志为刘怀远岳鹏李峰刘飞
Owner NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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