WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD
PROBLEM TO BE SOLVED: To solve the problem that, since a degree of improvement of BER characteristics by a DQF method largely depends on setting of a threshold value for quantizing to multiple bits, there is a problem that the BER characteristics deteriorate unless the threshold value is properly se...
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| creator | GOTO JUNGO SAKAGUCHI HIROSHI MIYAMOTO SHINICHI NAKAMURA OSAMU SANPEI MASAICHI HAMAGUCHI YASUHIRO IHI SHINSUKE |
| description | PROBLEM TO BE SOLVED: To solve the problem that, since a degree of improvement of BER characteristics by a DQF method largely depends on setting of a threshold value for quantizing to multiple bits, there is a problem that the BER characteristics deteriorate unless the threshold value is properly set.SOLUTION: The communication device that relays a received data signal includes: a reception quality measuring section that calculates propagation characteristics; and a quantization compression coding section that quantizes and compresses a log likelihood ratio obtained from the received signal on the basis of a threshold value. The quantization compression coding section has a plurality of threshold values used for quantization and switches.SELECTED DRAWING: Figure 5
【課題】DQF法によるBER特性の改善度合いは多ビットに量子化するための閾値の設定に大きく依存することから、閾値を適切に設定しないとBER特性が劣化する問題があった。【解決手段】受信したデータ信号を中継する通信装置であって、伝搬特性を算出する受信品質測定部と、受信信号より得られた対数尤度比を閾値に基づいて量子化圧縮する量子化圧縮符号化部とを有し、前記量子化圧縮符号化部は、量子化に用いる前記閾値を複数有し、切り替える。【選択図】図５ |
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【課題】DQF法によるBER特性の改善度合いは多ビットに量子化するための閾値の設定に大きく依存することから、閾値を適切に設定しないとBER特性が劣化する問題があった。【解決手段】受信したデータ信号を中継する通信装置であって、伝搬特性を算出する受信品質測定部と、受信信号より得られた対数尤度比を閾値に基づいて量子化圧縮する量子化圧縮符号化部とを有し、前記量子化圧縮符号化部は、量子化に用いる前記閾値を複数有し、切り替える。【選択図】図５</description><language>eng ; jpn</language><subject>BASIC ELECTRONIC CIRCUITRY ; CODE CONVERSION IN GENERAL ; CODING ; DECODING ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>2017</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=20170413&DB=EPODOC&CC=JP&NR=2017073579A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170413&DB=EPODOC&CC=JP&NR=2017073579A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>GOTO JUNGO</creatorcontrib><creatorcontrib>SAKAGUCHI HIROSHI</creatorcontrib><creatorcontrib>MIYAMOTO SHINICHI</creatorcontrib><creatorcontrib>NAKAMURA OSAMU</creatorcontrib><creatorcontrib>SANPEI MASAICHI</creatorcontrib><creatorcontrib>HAMAGUCHI YASUHIRO</creatorcontrib><creatorcontrib>IHI SHINSUKE</creatorcontrib><title>WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD</title><description>PROBLEM TO BE SOLVED: To solve the problem that, since a degree of improvement of BER characteristics by a DQF method largely depends on setting of a threshold value for quantizing to multiple bits, there is a problem that the BER characteristics deteriorate unless the threshold value is properly set.SOLUTION: The communication device that relays a received data signal includes: a reception quality measuring section that calculates propagation characteristics; and a quantization compression coding section that quantizes and compresses a log likelihood ratio obtained from the received signal on the basis of a threshold value. The quantization compression coding section has a plurality of threshold values used for quantization and switches.SELECTED DRAWING: Figure 5
【課題】DQF法によるBER特性の改善度合いは多ビットに量子化するための閾値の設定に大きく依存することから、閾値を適切に設定しないとBER特性が劣化する問題があった。【解決手段】受信したデータ信号を中継する通信装置であって、伝搬特性を算出する受信品質測定部と、受信信号より得られた対数尤度比を閾値に基づいて量子化圧縮する量子化圧縮符号化部とを有し、前記量子化圧縮符号化部は、量子化に用いる前記閾値を複数有し、切り替える。【選択図】図５</description><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>CODE CONVERSION IN GENERAL</subject><subject>CODING</subject><subject>DECODING</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLAP9wxy9XENDlZw9vf1DfXzdHYM8fT3U3BxDfN0dlVw9HNRwKHC1zXEw9-Fh4E1LTGnOJUXSnMzKLm5hjh76KYW5MenFhckJqfmpZbEewUYGRiaG5gbm5pbOhoTpQgAAP0rOA</recordid><startdate>20170413</startdate><enddate>20170413</enddate><creator>GOTO JUNGO</creator><creator>SAKAGUCHI HIROSHI</creator><creator>MIYAMOTO SHINICHI</creator><creator>NAKAMURA OSAMU</creator><creator>SANPEI MASAICHI</creator><creator>HAMAGUCHI YASUHIRO</creator><creator>IHI SHINSUKE</creator><scope>EVB</scope></search><sort><creationdate>20170413</creationdate><title>WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD</title><author>GOTO JUNGO ; SAKAGUCHI HIROSHI ; MIYAMOTO SHINICHI ; NAKAMURA OSAMU ; SANPEI MASAICHI ; HAMAGUCHI YASUHIRO ; IHI SHINSUKE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2017073579A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2017</creationdate><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>CODE CONVERSION IN GENERAL</topic><topic>CODING</topic><topic>DECODING</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>GOTO JUNGO</creatorcontrib><creatorcontrib>SAKAGUCHI HIROSHI</creatorcontrib><creatorcontrib>MIYAMOTO SHINICHI</creatorcontrib><creatorcontrib>NAKAMURA OSAMU</creatorcontrib><creatorcontrib>SANPEI MASAICHI</creatorcontrib><creatorcontrib>HAMAGUCHI YASUHIRO</creatorcontrib><creatorcontrib>IHI SHINSUKE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>GOTO JUNGO</au><au>SAKAGUCHI HIROSHI</au><au>MIYAMOTO SHINICHI</au><au>NAKAMURA OSAMU</au><au>SANPEI MASAICHI</au><au>HAMAGUCHI YASUHIRO</au><au>IHI SHINSUKE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD</title><date>2017-04-13</date><risdate>2017</risdate><abstract>PROBLEM TO BE SOLVED: To solve the problem that, since a degree of improvement of BER characteristics by a DQF method largely depends on setting of a threshold value for quantizing to multiple bits, there is a problem that the BER characteristics deteriorate unless the threshold value is properly set.SOLUTION: The communication device that relays a received data signal includes: a reception quality measuring section that calculates propagation characteristics; and a quantization compression coding section that quantizes and compresses a log likelihood ratio obtained from the received signal on the basis of a threshold value. The quantization compression coding section has a plurality of threshold values used for quantization and switches.SELECTED DRAWING: Figure 5
【課題】DQF法によるBER特性の改善度合いは多ビットに量子化するための閾値の設定に大きく依存することから、閾値を適切に設定しないとBER特性が劣化する問題があった。【解決手段】受信したデータ信号を中継する通信装置であって、伝搬特性を算出する受信品質測定部と、受信信号より得られた対数尤度比を閾値に基づいて量子化圧縮する量子化圧縮符号化部とを有し、前記量子化圧縮符号化部は、量子化に用いる前記閾値を複数有し、切り替える。【選択図】図５</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD |
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