A method for fast spectrum sensing of paired-carrier multiple-access in satellite communication

A paired carrier multiple access and spectrum sensing technology, applied in the field of paired carrier multiple access fast spectrum sensing, can solve problems such as rate consideration, and achieve the effects of improving sensing speed, improving continuity, and improving utilization efficiency

Active Publication Date: 2019-01-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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Problems solved by technology

However, the spectrum-aware detection algorithm resea

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  • A method for fast spectrum sensing of paired-carrier multiple-access in satellite communication
  • A method for fast spectrum sensing of paired-carrier multiple-access in satellite communication
  • A method for fast spectrum sensing of paired-carrier multiple-access in satellite communication

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Embodiment Construction

[0046] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0047] Such as figure 1 As shown, it is a flow chart of the steps of the method for fast spectrum sensing with paired carrier multiple access in satellite communication of the present invention.

[0048] In one embodiment, the paired carrier multiple access fast spectrum sensing method in the satellite communication mainly includes the following steps:

[0049] (s1) Establish a paired carrier multiple access fast spectrum sensing model, specifically including a satellite relay terminal, two communication terminals and a sensing terminal, and the two communication terminals pass through the satellite relay terminal through the paired carrier multiple access method For communication, the sensing terminal performs spectrum sensing on the idle frequency band on the satellite relay end, so the mathematical expression of the model is:

[0050] h ...

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Abstract

The invention relates to a method for fast spectrum sensing , which comprises the following steps: establishing a paired carrier multiple-access fast spectrum sensing model; obtaining a noise varianceestimation value of the paired carrier multiple-access fast spectrum sensing model through parameter estimation; obtaining a received signal sample value of the sensing terminal in the paired carriermultiple access fast spectrum sensing model according to the noise variance estimation value; and according to the received signal sampling value of the sensing terminal, determining an idle frequency band, and initiating communication by the sensing terminal through the idle frequency band. Compared with the prior art, the invention has the advantages of coherent spectrum use, high spectrum utilization rate, high spectrum sensing speed and the like.

Description

technical field [0001] The invention relates to the field of digital communication, in particular to a paired carrier multiple access fast spectrum sensing method in satellite communication. Background technique [0002] With the development of modern society, people's requirements for the quality of satellite communication are constantly improving, and the existing satellite communication technology is not enough to meet people's basic needs for satellite communication. An increase in data traffic and an increase in communication rates must lead to an increase in the use of wireless frequency bands. However, the available frequency band resources in satellite communication are limited. At the same time, in order to prevent mutual interference between different wireless communication systems, the spectrum allocated by each system has to leave a certain guard interval, which will inevitably lead to the shortage of spectrum resources. Tensions hindered the development of sate...

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Application Information

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IPC IPC(8): H04B17/382
CPCH04B17/382
Inventor 李杰党小宇郝崇正
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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