Optimized Rotations for LDPC-coded Gray-mapped MPSK Constellations with Signal Space Diversity
Rotation of the signal constellation together with in-phase and quadrature channel interleaving (signal space diversity) is known to provide good performance gains over fading channels for multi level modulation methods. This paper studies the extension of such schemes with a low density parity chec...
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| creator | Kiyani, N.F. Rizvi, U.H. Weber, J.H. Janssen, G.J.M. |
| description | Rotation of the signal constellation together with in-phase and quadrature channel interleaving (signal space diversity) is known to provide good performance gains over fading channels for multi level modulation methods. This paper studies the extension of such schemes with a low density parity check (LDPC) code. It is shown that for both coded and un-coded Gray-mapped MPSK modulation formats with signal space diversity on a Rayleigh fading channel, a well-considered choice of the rotation angle may lead to a significant gain over the conventional un-rotated constellation. However, the optimum rotation angle for the coded scheme may be different from the corresponding optimization angle of the un-coded scheme |
| doi_str_mv | 10.1109/SCVT.2006.334377 |
| format | Conference Proceeding |
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However, the optimum rotation angle for the coded scheme may be different from the corresponding optimization angle of the un-coded scheme</description><subject>Amplitude modulation</subject><subject>Constellation diagram</subject><subject>Fading</subject><subject>Modulation coding</subject><subject>Noise level</subject><subject>Parity check codes</subject><subject>Pulse modulation</subject><subject>Quadrature phase shift keying</subject><subject>Space technology</subject><subject>Wireless communication</subject><issn>2373-0854</issn><isbn>9780780397842</isbn><isbn>0780397843</isbn><isbn>0780397851</isbn><isbn>9780780397859</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2006</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNo1TF9PgzAcrFET5-TdxJd-AbDl19LyaJibRswWmT66lNJqDQwCjQY_vRjnvdxd7g9Cl5RElJL0ushetlFMSBIBMBDiCJ0TIQmkQnJ6jIKJ_z2LT9AsBgEhkZydoWAYPsgESKcdn6HXdedd475NhZ9ar7xr9wO2bY_zxSYLdVtNwapXY9iorpv046Z4wNlU8qauD_Uv599x4d72qsZFp7TBC_dp-sH58QKdWlUPJjjwHD0vb7fZXZivV_fZTR46KrgPY2WooMYkwuqKpbTSilNrKw6UiwS0Kq0mRMZalqXWTIoy-dVVaolknBuYo6u_X2eM2XW9a1Q_7hgFkCSFH6iKV4Q</recordid><startdate>200611</startdate><enddate>200611</enddate><creator>Kiyani, N.F.</creator><creator>Rizvi, U.H.</creator><creator>Weber, J.H.</creator><creator>Janssen, G.J.M.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200611</creationdate><title>Optimized Rotations for LDPC-coded Gray-mapped MPSK Constellations with Signal Space Diversity</title><author>Kiyani, N.F. ; Rizvi, U.H. ; Weber, J.H. ; Janssen, G.J.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i175t-2ae171ee67fcd491dca51ffd5315763cabfc0082c8bbcc487b62c8bd9f08455e3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Amplitude modulation</topic><topic>Constellation diagram</topic><topic>Fading</topic><topic>Modulation coding</topic><topic>Noise level</topic><topic>Parity check codes</topic><topic>Pulse modulation</topic><topic>Quadrature phase shift keying</topic><topic>Space technology</topic><topic>Wireless communication</topic><toplevel>online_resources</toplevel><creatorcontrib>Kiyani, N.F.</creatorcontrib><creatorcontrib>Rizvi, U.H.</creatorcontrib><creatorcontrib>Weber, J.H.</creatorcontrib><creatorcontrib>Janssen, G.J.M.</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>Kiyani, N.F.</au><au>Rizvi, U.H.</au><au>Weber, J.H.</au><au>Janssen, G.J.M.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Optimized Rotations for LDPC-coded Gray-mapped MPSK Constellations with Signal Space Diversity</atitle><btitle>2006 Symposium on Communications and Vehicular Technology</btitle><stitle>SCVT</stitle><date>2006-11</date><risdate>2006</risdate><spage>77</spage><epage>80</epage><pages>77-80</pages><issn>2373-0854</issn><isbn>9780780397842</isbn><isbn>0780397843</isbn><eisbn>0780397851</eisbn><eisbn>9780780397859</eisbn><abstract>Rotation of the signal constellation together with in-phase and quadrature channel interleaving (signal space diversity) is known to provide good performance gains over fading channels for multi level modulation methods. This paper studies the extension of such schemes with a low density parity check (LDPC) code. It is shown that for both coded and un-coded Gray-mapped MPSK modulation formats with signal space diversity on a Rayleigh fading channel, a well-considered choice of the rotation angle may lead to a significant gain over the conventional un-rotated constellation. However, the optimum rotation angle for the coded scheme may be different from the corresponding optimization angle of the un-coded scheme</abstract><pub>IEEE</pub><doi>10.1109/SCVT.2006.334377</doi><tpages>4</tpages></addata></record> |
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| ispartof | 2006 Symposium on Communications and Vehicular Technology, 2006, p.77-80 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Amplitude modulation Constellation diagram Fading Modulation coding Noise level Parity check codes Pulse modulation Quadrature phase shift keying Space technology Wireless communication |
| title | Optimized Rotations for LDPC-coded Gray-mapped MPSK Constellations with Signal Space Diversity |
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