A detection method, device and integrated circuit for narrowband interference noise
A narrow-band interference and detection method technology, which is applied in the direction of line transmission parts, distribution line transmission system, line transmission monitoring/testing, etc., can solve the problem of low accuracy and achieve the effect of improving accuracy
Active Publication Date: 2021-06-22
BEIJING SIGBEAN INFORMATION TECH CO LTD
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In the prior art, when estimating the narrowband interference noise, the channel estimation is first performed on the received signal, and then the narrowband interference noise is estimated by the method of channel estimation. Specifically, the pilot-assisted method is first performed in the data stream Insert a certain amount of time-domain or frequency-domain pilot data to assist in estimation. Therefore, this auxiliary method is used in the stage of data flow to obtain narrow-band interference noise by removing useful signals. The accuracy of narrow-band interference noise is affected by channel estimation. The impact of the method, that is, the interference of the useful signal, the accuracy is lower
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[0037] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.
[0038] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
[0039] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.
[0040] In the descr...
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A detection method and device for narrow-band interference noise are disclosed, which are used to solve the problem in the prior art that when detecting narrow-band interference noise, it is necessary to obtain narrow-band interference noise by removing useful signals at the stage of data flow, The accuracy of narrowband interference noise is affected by the channel estimation method, and the accuracy is low. Including: within the first setting period, filtering the first signal according to the current narrowband interference noise NBI list, and determining at least one GAP frame; in each GAP frame of the at least one GAP frame, the received GAP NBI carrier position detection is performed on the frame signal to determine an updated NBI list, wherein the updated NBI list is used to filter data signals within the second set period.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to a detection method and device for narrowband interference noise. Background technique [0002] In a Broadband Power Line Communication (BPLC) system, when power lines are used for spread spectrum communication, noise interference is the main factor affecting the reliability of power line communication. Specifically, power line noise interference mainly includes: colored background noise, and Periodic impulse noise asynchronous to power frequency, periodic impulse noise synchronous with power frequency, narrowband interference noise, and random impulse noise. Among them, the colored background noise is caused by low-power noise sources in the system, the power spectrum changes slowly with time, the power spectral density is low, and decreases with the increase of frequency, which can be approximated as zero-mean additive white Gaussian noise; and Power frequency asynchronous...
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IPC IPC(8): H04B3/54H04B3/46
CPCH04B3/46H04B3/54
Inventor 邓敬贤亢慧玲胡剑锋张国松
Owner BEIJING SIGBEAN INFORMATION TECH CO LTD