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Cooperative frequency spectrum sensing method based on consistency in cognitive radio electric network

A cognitive radio and spectrum sensing technology, which is applied in the field of wireless communication, can solve problems such as limited cooperation, achieve stable and reliable working performance, a wide range of applications, and reduce the possibility of loss detection and false early warning.

Inactive Publication Date: 2010-06-23
SHANGHAI MOBILEPEAK SEMICON
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Problems solved by technology

The results show that the common receiver's reporting channel is also limited in terms of coordination when it is in deep fading

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  • Cooperative frequency spectrum sensing method based on consistency in cognitive radio electric network
  • Cooperative frequency spectrum sensing method based on consistency in cognitive radio electric network
  • Cooperative frequency spectrum sensing method based on consistency in cognitive radio electric network

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Embodiment Construction

[0038] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0039] see figure 1 As shown, the consensus-based cooperative spectrum sensing method in the cognitive radio network includes a wireless main user and several wireless cognitive users in the cognitive radio network, wherein the method includes the following steps:

[0040] (1) The wireless cognitive user performs spectrum sensing measurement on the wireless primary user. The spectrum sensing measurement may be a matched filter spectrum sensing measurement processing operation, an energy detection spectrum sensing measurement processing operation, or a cyclostationary feature detection spectrum sensing measurement processing operation; The energy detection spectrum sensing measurement processing operation includes the following steps:

[0041] (a) Establish an energy detection spectrum sensing model, which includes a frequency band transfer f...

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Abstract

The invention relates to a cooperative frequency spectrum sensing method based on consistency in a cognitive radio electric network, which comprises the following steps: causing cognitive radio users to carry out frequency spectrum sensing measurement to a main radio user, establishing radio communication link alternating current frequency spectrum sensing measurement result information among all the cognitive radio users, judging whether the main radio user exists or not and carrying out subsequent frequency spectrum shared access operation according to judgment results. Reliable radio communication in the cooperative frequency spectrum sensing process is ensured by adopting the cooperative frequency spectrum sensing method based on the consistency in the cognitive radio electric network and utilizing a distributed model, so that not only can the cognitive radio users in the cognitive radio electric network can better effectively sense the frequency range use situations of an unauthorized user, but also can the cognitive radio users use more network resources on the premise of not influencing the authorized user, so that the probabilities of detection loss and early warning error are reduced, the utilization ratio of the network resources is improved, the working performance is stable and reliable, and the application scope is wider.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to the field of cognitive radio network technology, and specifically refers to a consensus-based cooperative spectrum sensing method in a cognitive radio network. Background technique [0002] With the continuous advancement of science and technology, in the field of wireless communication technology, wireless applications have been widely accepted by the public, and the number of users has increased sharply, thus bringing about a huge demand for wireless spectrum. After years of spectrum allocation, most of the frequency bands have been allocated to licensed users, but based on the current spectrum allocation, the spectrum utilization rate is very low. How to improve the utilization of the spectrum becomes a problem that needs to be solved. At this time, it was clarified in August 1999 by Professor Joseph Mitola of the Royal Swedish Institute of Technology Joseph Mitol...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W76/02
Inventor 李志强于非黄民义郑焱
Owner SHANGHAI MOBILEPEAK SEMICON
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