Power line anti-noise channel estimation method

A channel estimation and power line technology, applied in the distribution line transmission system, electrical components, baseband system, etc., can solve the problems of AMR system lack of noise impact elimination means, to ensure feasibility and effectiveness, reduce bit error rate, The effect of a good initial environment
CN106877907AInactive Publication Date: 2017-06-20BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF POSTS & TELECOMM
Publication Date
2017-06-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an interference noise elimination method suitable for a power line carrier (PLC) communication network, which is mainly used for solving the impulse interference noise which appears randomly and has high energy causes performance attenuation of the whole communication system in the PLC network. The method mainly comprises two parts of receiver-side signal amplitude pretreatment and robust channel estimation. The initial filtering of the impulse interference noise is performed according to the statistical characteristics of received signals by the receiver-side signal amplitude pretreatment, and the influence on the residual noise is further weakened by the robust channel estimation. Compared with other conventional power line noise elimination algorithms, the method provided by the present invention is characterized by a relatively low complexity and being insensitive to noise change. The method eliminates the power line noise from the viewpoint of practical feasibility and effectiveness, so that the bit error rate is reduced during the power line carrier transmission, and the system reliability can be improved.
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Description

technical field

[0001] The invention relates to the field of power line carrier communication, in particular to a noise elimination method in a low-voltage power line communication data acquisition system. Background technique

[0002] In the power line carrier communication network, since the original intention of the transmission medium is to transmit electrical signals, there are problems of unsatisfactory channel environment in the process of data signal transmission, which are mainly manifested in communication channel sharing, low transmission rate, and sudden interference noise. And strong, greatly affected by environmental factors, resulting in communication failure or link damage. Therefore, in the automatic meter reading (Automatic Meter Reading, AMR) system, finding an adaptive noise suppression algorithm is an effective means to solve the problem that restricts the reliability of power line carrier communication. At present, the algorithms in this aspect can be ...

Claims

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