Underwater sound high-speed communication method under time-varying channel
The invention provides an underwater sound high-speed communication method under a time-varying channel, and the method comprises the steps: firstly carrying out the cyclic correlation of a resampled Doppler signal and a local Doppler measurement signal, and obtaining a Doppler compensation initial...
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creator | ZHA PINDE ZHANG GUOHENG FU YAN ZHANG YINGYU WEN SHAOJUAN LI YUTONG WANG MEILING |
description | The invention provides an underwater sound high-speed communication method under a time-varying channel, and the method comprises the steps: firstly carrying out the cyclic correlation of a resampled Doppler signal and a local Doppler measurement signal, and obtaining a Doppler compensation initial value of Doppler coarse search through the judgment of a maximum correlation value; then, constructing a NelderMead simplex by using a Doppler compensation initial value obtained by Doppler coarse search and a cyclic correlation peak value, and then, carrying out fine Doppler search by adopting a NelderMead algorithm; according to the method, the Doppler compensation value estimated in a rough search and fine search mode is more in line with the real situation and is more accurate, the method is not only suitable for a fast time-varying channel, but also suitable for the situation of a low signal-to-noise ratio, and the performance of underwater sound high-speed OFDM communication is greatly optimized.
本发明提供一种时变信道下 |
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本发明提供一种时变信道下</description><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>TRANSMISSION</subject><subject>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyzsKAjEURuFpLETdw3UBKTLGBcigCIKV1kNIfieByU3IQ3H3IrgAq9N8Z9ld7myRX7oiU4mNLTk_OVESYMnEEBp7o6uPTAHVRUvtO1D1AeKp89vzRMZpZszrbvHQc8Hm11W3PR1vw1kgxRElaQNGHYerlEr2qlf7w-4f8wGpuDX0</recordid><startdate>20220301</startdate><enddate>20220301</enddate><creator>ZHA PINDE</creator><creator>ZHANG GUOHENG</creator><creator>FU YAN</creator><creator>ZHANG YINGYU</creator><creator>WEN SHAOJUAN</creator><creator>LI YUTONG</creator><creator>WANG MEILING</creator><scope>EVB</scope></search><sort><creationdate>20220301</creationdate><title>Underwater sound high-speed communication method under time-varying channel</title><author>ZHA PINDE ; ZHANG GUOHENG ; FU YAN ; ZHANG YINGYU ; WEN SHAOJUAN ; LI YUTONG ; WANG MEILING</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN114124245A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2022</creationdate><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>TRANSMISSION</topic><topic>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>ZHA PINDE</creatorcontrib><creatorcontrib>ZHANG GUOHENG</creatorcontrib><creatorcontrib>FU YAN</creatorcontrib><creatorcontrib>ZHANG YINGYU</creatorcontrib><creatorcontrib>WEN SHAOJUAN</creatorcontrib><creatorcontrib>LI YUTONG</creatorcontrib><creatorcontrib>WANG MEILING</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZHA PINDE</au><au>ZHANG GUOHENG</au><au>FU YAN</au><au>ZHANG YINGYU</au><au>WEN SHAOJUAN</au><au>LI YUTONG</au><au>WANG MEILING</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Underwater sound high-speed communication method under time-varying channel</title><date>2022-03-01</date><risdate>2022</risdate><abstract>The invention provides an underwater sound high-speed communication method under a time-varying channel, and the method comprises the steps: firstly carrying out the cyclic correlation of a resampled Doppler signal and a local Doppler measurement signal, and obtaining a Doppler compensation initial value of Doppler coarse search through the judgment of a maximum correlation value; then, constructing a NelderMead simplex by using a Doppler compensation initial value obtained by Doppler coarse search and a cyclic correlation peak value, and then, carrying out fine Doppler search by adopting a NelderMead algorithm; according to the method, the Doppler compensation value estimated in a rough search and fine search mode is more in line with the real situation and is more accurate, the method is not only suitable for a fast time-varying channel, but also suitable for the situation of a low signal-to-noise ratio, and the performance of underwater sound high-speed OFDM communication is greatly optimized.
本发明提供一种时变信道下</abstract><oa>free_for_read</oa></addata></record> |
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subjects | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
title | Underwater sound high-speed communication method under time-varying channel |
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