Channel capacity analytical method in chance spectra sharing system

Abstract

The invention relates to a channel capacity analytical method in a chance spectra sharing system, which has a basic idea of analyzing a secondary user signal interference-to-noise ratio (SINR), analyzing the difference between the secondary user channel capacity and traditional channel capacity, and determining a major factor affecting the secondary user channel capacity in the chance spectra sharing system. The method of the invention comprises the following steps: analyzing the secondary user signal interference-to-noise ratio SINR; analyzing the difference between the secondary user channel capacity and the traditional channel capacity; and determining the major factor affecting the secondary user channel capacity in the chance spectra sharing system. In the chance spectra sharing system, when the secondary user designs the transmission frame length and detection time and carries out utility function design, the secondary user needs to consider the secondary user channel capacity; and at the early stage of design, the secondary user needs to carry out corresponding theoretical analysis out of band and stores in a table of which the contents are changed along with the changes ofauthorized users, authorized channels and secondary user moving factors. The invention provides a theoretical analysis basis and reference of a physical layer and an MAC layer key technology design for the chance spectra sharing system.

Description

technical field [0001] The present invention generally relates to a new strategy for analyzing the channel capacity of cognitive users (secondary users) of opportunistic spectrum sharing systems in cognitive networks. This strategy provides a theoretical basis for analyzing channel capacity, as well as a theoretical basis for secondary users to design transmission parameters, and serves as a theoretical index for optimizing the performance of opportunistic spectrum sharing systems. The basic idea of ​​this scheme is to analyze the signal-to-interference-noise ratio (SINR) of the secondary user, and analyze the difference between the secondary user channel capacity and the traditional channel capacity, and determine the main factors affecting the secondary user channel capacity in the opportunistic spectrum sharing system. Background technique [0002] In 1948, Shannon, the founder of modern digital communication, pointed out in the channel coding theorem that as long as the ...

AI Technical Summary

Problems solved by technology

With the increase of channel complexity, the simple Shannon formula can no longer cover various factors that determine the communication capacity

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