Receiver for use in wireless communications and method and terminal using it
A wireless receiver for receiving and demodulating a frequency modulated RF signal by direct conversion includes, a circuit 107,109,113 producing in-phase and quadrature components of the received signal, and an estimator 204 periodically estimating an imbalance in amplitude between the in-phase and...
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| creator | BEN-AYUN MOSHE,CORSE NIR,GROSSMAN OVADIA,ROZENTALMARK |
| description | A wireless receiver for receiving and demodulating a frequency modulated RF signal by direct conversion includes, a circuit 107,109,113 producing in-phase and quadrature components of the received signal, and an estimator 204 periodically estimating an imbalance in amplitude between the in-phase and quadrature components and applying a relative adjustment in amplitude to compensate for the detected imbalance 205. The estimator 204 (i) divides samples Ii of the in-phase component I(t) and corresponding samples Qi of the quadrature component Q(t) into blocks; (ii) calculates for each block a block power value In corresponding to a summation of values of squares of the samples Ii and a block power value Qn corresponding to a summation of values of squares of the samples Qi; (iii) calculates from the block power values In and Qn a block amplitude imbalance value and (iv) calculates for a set of the block amplitude imbalance values an average value. |
| format | Patent |
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The estimator 204 (i) divides samples Ii of the in-phase component I(t) and corresponding samples Qi of the quadrature component Q(t) into blocks; (ii) calculates for each block a block power value In corresponding to a summation of values of squares of the samples Ii and a block power value Qn corresponding to a summation of values of squares of the samples Qi; (iii) calculates from the block power values In and Qn a block amplitude imbalance value and (iv) calculates for a set of the block amplitude imbalance values an average value.</description><language>eng</language><subject>BASIC ELECTRONIC CIRCUITRY ; DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; PULSE TECHNIQUE ; TRANSMISSION ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>2007</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&date=20070613&DB=EPODOC&CC=CN&NR=1981437A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20070613&DB=EPODOC&CC=CN&NR=1981437A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BEN-AYUN MOSHE,CORSE NIR,GROSSMAN OVADIA,ROZENTALMARK</creatorcontrib><title>Receiver for use in wireless communications and method and terminal using it</title><description>A wireless receiver for receiving and demodulating a frequency modulated RF signal by direct conversion includes, a circuit 107,109,113 producing in-phase and quadrature components of the received signal, and an estimator 204 periodically estimating an imbalance in amplitude between the in-phase and quadrature components and applying a relative adjustment in amplitude to compensate for the detected imbalance 205. The estimator 204 (i) divides samples Ii of the in-phase component I(t) and corresponding samples Qi of the quadrature component Q(t) into blocks; (ii) calculates for each block a block power value In corresponding to a summation of values of squares of the samples Ii and a block power value Qn corresponding to a summation of values of squares of the samples Qi; (iii) calculates from the block power values In and Qn a block amplitude imbalance value and (iv) calculates for a set of the block amplitude imbalance values an average value.</description><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>PULSE TECHNIQUE</subject><subject>TRANSMISSION</subject><subject>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2007</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqFi7EKwkAQBa-xEPUb3B-wCBHUUoJiIRZiH5bLiy7c7YXbi_6-IvZWM8XM1J2v8JAnMvUp02ggUXpJRoAZ-RTjqOK5SFIj1o4iyiN1Xy3IUZTDZxO9k5S5m_QcDIsfZ255PNya0wpDamEDeyhK21yq3bZa15t9_b94A8_dNQ4</recordid><startdate>20070613</startdate><enddate>20070613</enddate><creator>BEN-AYUN MOSHE,CORSE NIR,GROSSMAN OVADIA,ROZENTALMARK</creator><scope>EVB</scope></search><sort><creationdate>20070613</creationdate><title>Receiver for use in wireless communications and method and terminal using it</title><author>BEN-AYUN MOSHE,CORSE NIR,GROSSMAN OVADIA,ROZENTALMARK</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN1981437A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2007</creationdate><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>PULSE TECHNIQUE</topic><topic>TRANSMISSION</topic><topic>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>BEN-AYUN MOSHE,CORSE NIR,GROSSMAN OVADIA,ROZENTALMARK</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BEN-AYUN MOSHE,CORSE NIR,GROSSMAN OVADIA,ROZENTALMARK</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Receiver for use in wireless communications and method and terminal using it</title><date>2007-06-13</date><risdate>2007</risdate><abstract>A wireless receiver for receiving and demodulating a frequency modulated RF signal by direct conversion includes, a circuit 107,109,113 producing in-phase and quadrature components of the received signal, and an estimator 204 periodically estimating an imbalance in amplitude between the in-phase and quadrature components and applying a relative adjustment in amplitude to compensate for the detected imbalance 205. 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| subjects | BASIC ELECTRONIC CIRCUITRY DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PULSE TECHNIQUE TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | Receiver for use in wireless communications and method and terminal using it |
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