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Frequency hopping sequence generation method suitable for clock asynchronous multi-antenna cognitive wireless network

A technology of cognitive wireless network and frequency hopping sequence, applied in the field of frequency hopping sequence generation, to achieve the effect of small MTTR value

Inactive Publication Date: 2020-03-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, a typical optimization problem faced by clock asynchronous frequency hopping systems is how to minimize the MTTR value of the frequency hopping system for a given value of DoR

Method used

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  • Frequency hopping sequence generation method suitable for clock asynchronous multi-antenna cognitive wireless network
  • Frequency hopping sequence generation method suitable for clock asynchronous multi-antenna cognitive wireless network
  • Frequency hopping sequence generation method suitable for clock asynchronous multi-antenna cognitive wireless network

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Embodiment

[0033] In this example, a given node antenna number R=3, a given channel number N=12, a given (m=6, R=3)-difference set And a given can be divided into 2 mutually disjoint (n=6, k=3)-difference sets, namely and of A clock asynchronous frequency hopping sequence set including R=3 frequency hopping sequences can be generated for each cognitive node with R=3 antennas through the following steps:

[0034] S1. Number the N=12 channels of the multi-antenna cognitive wireless network, and the numbers are recorded as: 0, 1, 2, ..., 11; number the R=3 antennas of each cognitive node, and the numbers are recorded as : 0,1,2; for a given (6,3)-difference set Markable as a 3-element set For two disjoint (6,3)-DSs divided by (2,6,3)-UDDS A, they can be marked as and For the greatest common divisor of parameters m=6 and k=3, it can be denoted as gcd(m,k)=3.

[0035] S2. For each cognitive node with R=3 antennas, the frequency hopping sequence used by each antenna is a continu...

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Abstract

The invention belongs to the technical field of spread spectrum communication, and particularly relates to a frequency hopping sequence generation method suitable for a clock asynchronous multi-antenna cognitive wireless network. The frequency hopping sequence design method provided by the invention can ensure that two cognitive nodes with R antennas and any clock difference in the multi-antenna cognitive wireless network can realize frequency hopping convergence on N different channels (namely channels 0, 1,..., N-1) in each mn time slot period. When the number DoR of the convergence channelsof the cognitive radio network is given, the frequency hopping sequence generation method provided by the invention can obtain an MTTR value smaller than that of the existing frequency hopping sequence generation method suitable for the clock asynchronous multi-antenna cognitive radio network.

Description

technical field [0001] The invention belongs to the technical field of spread spectrum communication, and in particular relates to a method for generating a frequency hopping sequence suitable for a clock asynchronous multi-antenna cognitive wireless network. Background technique [0002] The main function of the cognitive wireless network is to flexibly use the idle spectrum resources of the licensed network for communication without interfering with the licensed network communication. For this reason, cognitive wireless networks that do not have legal spectrum resources need to have a set of efficient and reliable control information interaction mechanisms to realize the interaction between cognitive nodes, including spectrum sensing results, network topology, clock synchronization, and communication resource reservation. Type control information. The control information interaction method based on frequency hopping can flexibly and quickly find an idle communication freq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7136
CPCH04B1/7136
Inventor 谭雪松刘其百慧
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA