Method of main user's frequency spectrum hole in use for detecting characteristics of cooperation, and periodic stable state of secondary user in radio communication

Abstract

The method comprises: frequency-point detection initialization; cooperation and feature detection; spectrum borrowing; and spectrum releasing. In the invention, single secondary user respectively uses cycle steady state feature detection approach to detect the spectrum hole in the spectrum; by said approach, there is no need to determine a threshold and the different modulation signals can also be distinguished; the cooperative secondary user returns the detection results to the secondary user asking the cooperation; only when secondary users all detect the spectrum hole, the secondary user asking for cooperation can borrow the channel of primary user corresponding to the spectrum.

Description

Technical field [0001] The invention belongs to the technical field for improving spectrum utilization efficiency in a wireless communication system, and particularly belongs to the spectrum hole detection technology in the technical field of opportunistic spectrum sharing and improving spectrum utilization efficiency. Background technique [0002] In recent years, the demand for spectrum resources has increased significantly, and the shortage of spectrum resources has become more and more prominent. An effective way to solve this problem is the spectrum sharing technology of the multi-radio system, especially the opportunistic spectrum sharing technology. The users who provide shared spectrum resources are called primary users, and the users who share the spectrum resources of the radio system to which the primary users belong are called secondary users. The opportunistic spectrum sharing method is that the secondary user uses the spectrum resources of the primary user in ...

AI Technical Summary

Problems solved by technology

Ai Gasmi et al. discuss collaborative spectrum sensing using energy detection per sub-user, de Kebrik, Jay Helenbrand, Si Heiken, and Ki Sensen limit their discussion to The cooperative spectrum sensing method does not discuss the spectrum sensing method of a single secondary user, nor does it discuss the combination of the spectrum sensing method of a single secondary user and multi-user cooperation

Images