Multi-user collaborative spectrum sensing method based on single bit compression sensing technology

A compressed sensing and user-sensing technology, applied in the field of cognitive radio, can solve problems such as inability to use, and achieve the effect of reducing workload, improving practicability, reducing workload and processing difficulty

Inactive Publication Date: 2013-03-20
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Therefore, the current single-bit compressed sensing technology cannot be used in the field of spectrum sensing

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  • Multi-user collaborative spectrum sensing method based on single bit compression sensing technology
  • Multi-user collaborative spectrum sensing method based on single bit compression sensing technology
  • Multi-user collaborative spectrum sensing method based on single bit compression sensing technology

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] The multi-user cooperative spectrum sensing method based on single-bit compressed sensing technology in the present invention is based on the fact that the actual occupancy rate of wireless spectrum resources is low. After the analog baseband signal is compressed and sampled, the obtained compressed sampling results are respectively transmitted to the fusion center FC, and the FC performs cooperative reconstruction on the frequency domain signal corresponding to the wideband analog baseband signal to obtain the occupancy of spectrum resources.

[0032] see figure 1 , introduces the application scenario of the method of the present invention: in the cognitive wireless network, the sampling process of single-bit compressed sensing is completed...

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Abstract

The invention discloses a multi-user collaborative spectrum sensing method based on a single bit compression sensing technology. Based on the current situation of a low actual occupancy rate of wireless spectrum resources, a plurality of control units (CUs) use a single bit complex signal compression sensing technology respectively, after compressed sampling is performed to broadband analog base band signals sent by a master user, the obtained compressed sampling results are transmitted to a financial centre (FC) respectively, and the FC performs collaboration reconstruction to corresponding frequency domain signals of the broadband analog base band signals to obtain occupancy conditions of spectrum resources. Compared with traditional sensing methods, the simplicity of actual quantitative operation is fully considered, the bit speed rate needed by compressed spectrum sensing is further reduced, the computation complexity of each sensing user is reduced, and multi-user collaborative spectrum sensing and single user independent sensing are compared, so that good sensing effects can be obtained.

Description

technical field [0001] The invention relates to a multi-user cooperative spectrum sensing method based on single-bit compressed sensing technology, and belongs to the technical field of cognitive radio. Background technique [0002] First, cognitive radio and spectrum sensing technology are introduced. [0003] With the continuous growth of wireless communication requirements, users require higher and higher data transmission rates supported by wireless communication technologies. According to Shannon's information theory, these communication systems have a corresponding increase in demand for wireless spectrum resources, resulting in increasingly scarce spectrum resources suitable for wireless communication. Therefore, increasingly scarce spectrum resources have become a new bottleneck restricting the development of wireless communications. On the other hand, the spectrum resources that have been allocated to the existing wireless communication systems are usually idle to...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W28/06H04B7/08
Inventor 徐文波牛凯韩笑孙健行田耘
Owner BEIJING UNIV OF POSTS & TELECOMM
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