A multi-domain feature mining and analysis method for TV frequency bands
An analysis method and technology of television and video, applied in electrical components, transmission monitoring, transmission systems, etc., can solve problems such as incomplete reflection of spectral multi-domain characteristics, ignoring time measurement and spatial measurement information mining, etc., to ensure correctness and accuracy. Effectiveness
Active Publication Date: 2016-05-18
BEIJING UNIV OF POSTS & TELECOMM
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[0004] When performing spectrum detection in the existing scheme, only the duty cycle of each frequency band is measured and analyzed from the frequency domain, which cannot fully reflect the multi-domain characteristics of the spectrum, and ignores the information mining on the time measure and space measure
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] Such as figure 1 As shown, a kind of multi-domain feature mining and analysis method for television frequency band provided by the embodiment of the present invention, the method comprises the following steps:
[0030] S1: Perform fixed-point collection and mobile collection of data.
[0031] In this step, in terms of data collection, in order to ensure that as many direct rays as possible are collected, the location selection of fixed-point measuremen...
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The invention provides a multi-domain feature mining and analyzing method for television frequency bands. The method includes the steps that fixed-point collection and movable collection are carried out on data; frequency domain features and time domain features of the television frequency bands are extracted for the fixed-point collection data, and China digital television signal features are combined for analysis to obtain service conditions of the frequency bands; data selection is carried out on the movable collection data, and when the difference value between a current sampled point and an adjacent sampled point exceeds a preset first threshold value, the current sampled point is judged as an abnormal point; television frequency band space domain features of the movable collection data are extracted, parameters of a propagation model are corrected by means of data with abnormal points removed, and therefore television signal intensity of the whole area can be obtained. According to the method, multi-domains of television frequency domains can be extracted and synthetically analyzed, television frequency band spectrum resources can be comprehensively researched.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a multi-domain feature mining and analysis method for TV frequency bands. Background technique [0002] The rapid development of wireless communication and the rapid growth of data demand have led to the rapid development of various wireless technologies such as Wi-Fi and LTE. In order to provide high-quality services, sufficient spectrum resources are necessary. However, it is difficult to find unallocated spectrum at present. resource. Under this premise, efficient spectrum utilization technologies such as cognitive radio have been proposed. The core idea of cognitive radio technology is that when the primary user is idle, secondary users can dynamically use spectrum resources. In this way, the utilization rate of the wireless spectrum is greatly improved. The TV band is the most suitable frequency band for cognitive radio because most of the transmissions in...
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IPC IPC(8): H04B17/382H04B17/391
Inventor 冯志勇张奇勋田玉成陈凯晏潇
Owner BEIJING UNIV OF POSTS & TELECOMM