Implementation of DCT based OFDM system
The conventional OFDM system employs the IFFT-FFT structure to impart the orthogonolity feature. However, due to complex nature of FFT, implementation size is large enough. The orthogonolity can also be provided if IDCT-DCT structure is used in place of FFT. This will reduce the implementation area...
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| creator | Gi, Hyun Kim Honey, Durga Tiwari Chan, Mo Kim Yong, Beom Cho Kwon, Younggoo |
| description | The conventional OFDM system employs the IFFT-FFT structure to impart the orthogonolity feature. However, due to complex nature of FFT, implementation size is large enough. The orthogonolity can also be provided if IDCT-DCT structure is used in place of FFT. This will reduce the implementation area and will also increase the computation speed as only real calculations are required. In this paper we present the implementation of DCT based OFDM system. The DCT structure prevalent in H.264 standard is taken into reference as it has faster operation as compared to conventional DCT structure. The implementation of DCT-IDCT structure was done on ALTERA CYCLONE -II FPGA. The results show that the speed of calculation of orthogonal components is increased three folds while the implementation size reduces to half as compared to FFT based design. |
| doi_str_mv | 10.1109/SOCDC.2008.4815679 |
| format | Conference Proceeding |
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However, due to complex nature of FFT, implementation size is large enough. The orthogonolity can also be provided if IDCT-DCT structure is used in place of FFT. This will reduce the implementation area and will also increase the computation speed as only real calculations are required. In this paper we present the implementation of DCT based OFDM system. The DCT structure prevalent in H.264 standard is taken into reference as it has faster operation as compared to conventional DCT structure. The implementation of DCT-IDCT structure was done on ALTERA CYCLONE -II FPGA. The results show that the speed of calculation of orthogonal components is increased three folds while the implementation size reduces to half as compared to FFT based design.</description><identifier>ISBN: 1424425980</identifier><identifier>ISBN: 9781424425983</identifier><identifier>EISBN: 1424425999</identifier><identifier>EISBN: 9781424425990</identifier><identifier>DOI: 10.1109/SOCDC.2008.4815679</identifier><identifier>LCCN: 2008904863</identifier><language>eng</language><publisher>IEEE</publisher><subject>Amplitude modulation ; Approximation error ; BER ; Binary phase shift keying ; DCT ; Discrete cosine transforms ; Discrete Fourier transforms ; FFT ; Logic ; OFDM ; OFDM modulation ; Pulse modulation ; Quadrature amplitude modulation ; Video coding ; WLAN</subject><ispartof>2008 International SoC Design Conference, 2008, Vol.2, p.II-41-II-44</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4815679$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,776,780,785,786,2052,27902,54895</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/4815679$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Gi, Hyun Kim</creatorcontrib><creatorcontrib>Honey, Durga Tiwari</creatorcontrib><creatorcontrib>Chan, Mo Kim</creatorcontrib><creatorcontrib>Yong, Beom Cho</creatorcontrib><creatorcontrib>Kwon, Younggoo</creatorcontrib><title>Implementation of DCT based OFDM system</title><title>2008 International SoC Design Conference</title><addtitle>SOCDC</addtitle><description>The conventional OFDM system employs the IFFT-FFT structure to impart the orthogonolity feature. 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The results show that the speed of calculation of orthogonal components is increased three folds while the implementation size reduces to half as compared to FFT based design.</description><subject>Amplitude modulation</subject><subject>Approximation error</subject><subject>BER</subject><subject>Binary phase shift keying</subject><subject>DCT</subject><subject>Discrete cosine transforms</subject><subject>Discrete Fourier transforms</subject><subject>FFT</subject><subject>Logic</subject><subject>OFDM</subject><subject>OFDM modulation</subject><subject>Pulse modulation</subject><subject>Quadrature amplitude modulation</subject><subject>Video coding</subject><subject>WLAN</subject><isbn>1424425980</isbn><isbn>9781424425983</isbn><isbn>1424425999</isbn><isbn>9781424425990</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2008</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNpFj0FLAzEUhCNS0Nb-Ab3szdOuL3nJJjlK1mqhsgf3XrLJC6x029Lspf_eigXnMMMHw8Aw9sih4hzsy1frGlcJAFNJw1Wt7Q2bcymkFMpae_sPBmZs_lu0IE2Nd2yZ8zdcJBWiwnv2vB6POxppP_lpOOyLQyoa1xW9zxSLdtV8FvmcJxof2Cz5XablNResW7117qPctO9r97opBwtTGX2AaJJGY3QCI1RPWnMbg-WaVKgxaC6plwJNj54CYlQXVzyEpFItccGe_mYHItoeT8PoT-ft9ST-ALktQhM</recordid><startdate>200811</startdate><enddate>200811</enddate><creator>Gi, Hyun Kim</creator><creator>Honey, Durga Tiwari</creator><creator>Chan, Mo Kim</creator><creator>Yong, Beom Cho</creator><creator>Kwon, Younggoo</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200811</creationdate><title>Implementation of DCT based OFDM system</title><author>Gi, Hyun Kim ; Honey, Durga Tiwari ; Chan, Mo Kim ; Yong, Beom Cho ; Kwon, Younggoo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i90t-dac0d8f73887f0825be7719dc917e5c63c714eb4238b3aec33d5ec351ccf5f643</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Amplitude modulation</topic><topic>Approximation error</topic><topic>BER</topic><topic>Binary phase shift keying</topic><topic>DCT</topic><topic>Discrete cosine transforms</topic><topic>Discrete Fourier transforms</topic><topic>FFT</topic><topic>Logic</topic><topic>OFDM</topic><topic>OFDM modulation</topic><topic>Pulse modulation</topic><topic>Quadrature amplitude modulation</topic><topic>Video coding</topic><topic>WLAN</topic><toplevel>online_resources</toplevel><creatorcontrib>Gi, Hyun Kim</creatorcontrib><creatorcontrib>Honey, Durga Tiwari</creatorcontrib><creatorcontrib>Chan, Mo Kim</creatorcontrib><creatorcontrib>Yong, Beom Cho</creatorcontrib><creatorcontrib>Kwon, Younggoo</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Gi, Hyun Kim</au><au>Honey, Durga Tiwari</au><au>Chan, Mo Kim</au><au>Yong, Beom Cho</au><au>Kwon, Younggoo</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Implementation of DCT based OFDM system</atitle><btitle>2008 International SoC Design Conference</btitle><stitle>SOCDC</stitle><date>2008-11</date><risdate>2008</risdate><volume>2</volume><spage>II-41</spage><epage>II-44</epage><pages>II-41-II-44</pages><isbn>1424425980</isbn><isbn>9781424425983</isbn><eisbn>1424425999</eisbn><eisbn>9781424425990</eisbn><abstract>The conventional OFDM system employs the IFFT-FFT structure to impart the orthogonolity feature. However, due to complex nature of FFT, implementation size is large enough. The orthogonolity can also be provided if IDCT-DCT structure is used in place of FFT. This will reduce the implementation area and will also increase the computation speed as only real calculations are required. In this paper we present the implementation of DCT based OFDM system. The DCT structure prevalent in H.264 standard is taken into reference as it has faster operation as compared to conventional DCT structure. The implementation of DCT-IDCT structure was done on ALTERA CYCLONE -II FPGA. The results show that the speed of calculation of orthogonal components is increased three folds while the implementation size reduces to half as compared to FFT based design.</abstract><pub>IEEE</pub><doi>10.1109/SOCDC.2008.4815679</doi></addata></record> |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Amplitude modulation Approximation error BER Binary phase shift keying DCT Discrete cosine transforms Discrete Fourier transforms FFT Logic OFDM OFDM modulation Pulse modulation Quadrature amplitude modulation Video coding WLAN |
| title | Implementation of DCT based OFDM system |
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