Pseudo-random sequence generation method and application method for wireless sensor network nodes

A wireless sensor and pseudo-random sequence technology, applied in wireless communication, network topology, electrical components, etc., can solve problems such as limited applications, and achieve good autocorrelation effects

Inactive Publication Date: 2016-10-19
HUNAN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0019] A series of analyzes such as the Hamming distance and cross-correlation of the D-sequence prove that (1 / p) R D-sequence has good random characteristics and can be used as a pseudo-random sequence generation method, but its longest sequence length is only p-1, which greatly limits its application

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  • Pseudo-random sequence generation method and application method for wireless sensor network nodes
  • Pseudo-random sequence generation method and application method for wireless sensor network nodes
  • Pseudo-random sequence generation method and application method for wireless sensor network nodes

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Embodiment Construction

[0046] The present invention provides a pseudo-random sequence generation method for wireless sensor network nodes. The pseudo-random number sequence generation method reintroduces the output random sequence value into the calculation process of the next random sequence value, so that the generated new While maintaining its original random characteristics, the D-sequence of D-sequence changes the original (1 / p) R The limited cycle period of D-sequence expands its sequence length. The working principle of this pseudo-random sequence generation method for wireless sensor network nodes can be expressed by formulas (1) and (2):

[0047] S(i)=floor(x(i-1) / p) (1)

[0048] x(i)=R×mod(x(i-1),p)+S(i) (2)

[0049] Among them, R is the base number, the denominator p is a prime number, the floor operation is a rounding operation, the Mod operation is a remainder operation, x(0) is set to R, and the random sequence generator can generate a corresponding random sequence S(i ), S(i) is an ...

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Abstract

The invention discloses a pseudo random sequence generation method for wireless sensor network nodes and an application method thereof, wherein the pseudo random sequence generation method for the wireless sensor network nodes comprises the following steps: step S101: inputting any prime number p and cardinal number R; step S102: setting an initial value of x to be the cardinal number R, initializing i to be 1, and initializing a random sequence S; step S103: setting an intermediate variable t, wherein t is equal to mod(x, p); step S104: assigning S(i), wherein S(i) is equal to floor(x / p); step S105: amending the value of x, wherein x is equal to t*R+S(i), amending the value of i, i is equal to i+1; step S106: judging whether the length of the random sequence S is equal to the length of the random sequence C, if so, carrying out the next step; if not, returning to the step S103: step S107: outputting the random sequence, S is equal to {S(1), S(2),..., S(i)}. New D-sequence generated by the method changes the limited cycle period of original (1 / p)RD-sequence so as to enlarge the sequence length; the method is more sensitive for disturbance, and has extremely good autocorrelation, cross correction and probability distribution characteristic.

Description

technical field [0001] The invention belongs to the field of wireless sensor network (Wireless Sensor Networks, WSN) security encryption, and in particular relates to a method for generating a pseudo-random sequence for wireless sensor network nodes, and a plaintext encryption transmission method for wireless sensor network nodes. Background technique [0002] As an effective tool and carrier, pseudo-random sequences are widely used in the field of information security, especially the design and research of pseudo-random sequences in sequence ciphers, because true random sequences can generally only be generated from natural phenomena, and from practical applications It is very difficult to generate them, so pseudo-random sequences generated by artificial methods are widely used. [0003] In the physical layer encryption algorithm based on sequence cipher, the pseudo-random sequence generator is the core component. The encryption algorithm uses the random sequence generated ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/02H04W84/18
Inventor 刘宏立徐琨鲍龙
Owner HUNAN UNIV
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