Method for channel estimation and equalization based on distributed photovoltaic direct current channel

CN117411747BActive Publication Date: 2026-07-07HANGZHOU VANGO TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HANGZHOU VANGO TECH
Filing Date
2023-10-17
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing channel estimation algorithms struggle to accurately estimate the signal-to-noise ratio under harsh communication conditions, impacting channel estimation and equalization performance. Furthermore, channel parameters and noise parameters significantly influence each other.

Method used

A channel estimation method based on a distributed photovoltaic DC channel is adopted. The channel response is estimated by transmitting a probe packet to the receiver. Channel compensation is performed using the MMSE criterion and BPSK modulation. Noise equalization is performed at the receiver, and channel and noise parameters are processed separately.

Benefits of technology

It achieves accurate estimation and equalization of channel parameters in harsh environments, reduces the impact of noise on channel estimation, and improves system equalization performance and receiver sensitivity.

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Abstract

The application discloses a kind of based on distributed photovoltaic direct current channel's detection package channel estimation and equalization method, including step 1, transmit detection package to receiving end, according to the feedback of receiving end to carry out channel estimation, obtain channel response;Step 2, according to the channel response, the data to be transmitted is compensated, obtain the data after compensation, and the data after compensation is transmitted to receiving end;The data to be transmitted includes baseband data;Step 3, receiving end carries out de-noise equalization to the data after compensation received, obtains the baseband data sent by transmitting end.The method calculates the approximate value of channel without noise influence under the environment with noise, and the transmitting end realizes equalization according to the approximate value of channel.In the receiving end, de-noise channel estimation and equalization are realized, channel parameters and noise parameters are processed separately, mutual influence is greatly reduced, channel estimation and equalization performance are improved, and basic technical support is provided for the safety, efficiency improvement and operation and maintenance of rapidly developing distributed photovoltaic power station.
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