Estimation method for QAM constellation diagram rotation caused by frequency offset, storage medium and equipment

Estimation method for QAM constellation diagram rotation caused by frequency offset, storage medium and equipment

The invention discloses a method for estimating rotation of a QAM constellation diagram caused by frequency offset, a storage medium and equipment. The method comprises the following steps: mapping a received signal into an original quadrature amplitude modulation (QAM) constellation diagram in a co...

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Hauptverfasser: WANG YUTAO, CAI PENGHAO, YANG FUQIAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator WANG YUTAO
CAI PENGHAO
YANG FUQIAN
description The invention discloses a method for estimating rotation of a QAM constellation diagram caused by frequency offset, a storage medium and equipment. The method comprises the following steps: mapping a received signal into an original quadrature amplitude modulation (QAM) constellation diagram in a complex plane, the original QAM constellation diagram comprising a group of signal data points; sequentially adopting a plurality of rotation angles to perform rotation angle compensation on the group of signal data points to obtain a plurality of groups of compensation data points, each group of compensation data points corresponding to a rotation QAM constellation diagram in a complex plane; calculating graph distances between a plurality of rotary QAM constellation diagrams corresponding to the plurality of groups of compensation data points and the theoretical QAM constellation diagram to obtain a plurality of graph distance values; and determining a rotation angle corresponding to the constellation diagram close
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The method comprises the following steps: mapping a received signal into an original quadrature amplitude modulation (QAM) constellation diagram in a complex plane, the original QAM constellation diagram comprising a group of signal data points; sequentially adopting a plurality of rotation angles to perform rotation angle compensation on the group of signal data points to obtain a plurality of groups of compensation data points, each group of compensation data points corresponding to a rotation QAM constellation diagram in a complex plane; calculating graph distances between a plurality of rotary QAM constellation diagrams corresponding to the plurality of groups of compensation data points and the theoretical QAM constellation diagram to obtain a plurality of graph distance values; and determining a rotation angle corresponding to the constellation diagram close</description><language>chi ; eng</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20230623&amp;DB=EPODOC&amp;CC=CN&amp;NR=116319231A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20230623&amp;DB=EPODOC&amp;CC=CN&amp;NR=116319231A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG YUTAO</creatorcontrib><creatorcontrib>CAI PENGHAO</creatorcontrib><creatorcontrib>YANG FUQIAN</creatorcontrib><title>Estimation method for QAM constellation diagram rotation caused by frequency offset, storage medium and equipment</title><description>The invention discloses a method for estimating rotation of a QAM constellation diagram caused by frequency offset, a storage medium and equipment. 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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Estimation method for QAM constellation diagram rotation caused by frequency offset, storage medium and equipment
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