Robust Precoding Schemes for Multi-User MISO-OFDM Downlink with Limited Time-Domain Feedback

In multi-user multiple-input single-output orthogonal frequency-division multiplexing （MISO-OFDM） downlinks with limited feedback, both linear precoders （LP） and Tomlinson-Harashima precoders （THP） experience performance degradation due to inaccurate channel state information at the transmitter （CSI...

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Veröffentlicht in:	Tsinghua science and technology 2009-12, Vol.14 (6), p.725-731
1. Verfasser:	苏泳涛张贤达
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Sprache:	eng
Schlagworte:	linear precoding multiple-input single-output (MISO) OFDM orthogonal frequency-division multiplexing (OFDM) Tomlinson-Harashima precoding (THP) 信息反馈多用户时间域正交频分复用预编码
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container_title	Tsinghua science and technology
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description	In multi-user multiple-input single-output orthogonal frequency-division multiplexing （MISO-OFDM） downlinks with limited feedback, both linear precoders （LP） and Tomlinson-Harashima precoders （THP） experience performance degradation due to inaccurate channel state information at the transmitter （CSIT）. This analysis treats the downlink channels as random quantities and exploits their second order statistics in robust precoding schemes to correct the errors introduced in the feedback procedure. The time-domain channel vectors are found to reduce the feedback overhead more than the frequency-domain vectors. A compression and restoration method and a codebook design are also given to obtain compact feedback quantities. Simulations show that the robust LP and THP are superior to the previous methods with tradeoffs possible between performance and feedback overhead.
doi_str_mv	10.1016/S1007-0214(09)70141-5
format	Article
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This analysis treats the downlink channels as random quantities and exploits their second order statistics in robust precoding schemes to correct the errors introduced in the feedback procedure. The time-domain channel vectors are found to reduce the feedback overhead more than the frequency-domain vectors. A compression and restoration method and a codebook design are also given to obtain compact feedback quantities. 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This analysis treats the downlink channels as random quantities and exploits their second order statistics in robust precoding schemes to correct the errors introduced in the feedback procedure. The time-domain channel vectors are found to reduce the feedback overhead more than the frequency-domain vectors. A compression and restoration method and a codebook design are also given to obtain compact feedback quantities. Simulations show that the robust LP and THP are superior to the previous methods with tradeoffs possible between performance and feedback overhead.</description><subject>linear precoding</subject><subject>multiple-input single-output (MISO)</subject><subject>OFDM</subject><subject>orthogonal frequency-division multiplexing (OFDM)</subject><subject>Tomlinson-Harashima precoding (THP)</subject><subject>信息反馈</subject><subject>多用户</subject><subject>时间域</subject><subject>正交频分复用</subject><subject>预编码</subject><issn>1007-0214</issn><issn>1878-7606</issn><issn>1007-0214</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqFkM1uEzEUhUcIJErhEZAsVnRhuLZnxp4VQg2hlVIFkXaHZHns68RtxqbjCWnfHqcpa1b3LM6P7ldV7xl8YsDazysGIClwVn-E7kwCqxltXlQnTElFZQvty6L_WV5Xb3K-BRBtI8VJ9etn6nd5Ij9GtMmFuCYru8EBM_FpJFe77RToTcYiL1dLupzPrsgs7eM2xDuyD9OGLMIQJnTkOgxIZ2kwIZI5ouuNvXtbvfJmm_Hd8z2tbubfrs8v6GL5_fL864JaLoSiSnHZGs-EqV1vOe8Au07URtVeWtk1UINgwGvbI-t74bx3UrgOlfJ9oziK0-rs2Ls30Zu41rdpN8ayqO837uGh18gBOmgBVPE2R68dU84jev17DIMZHzUDfcCpn3DqAysNnX7CqZuS-3LMYXnkT8BRZxswWnShoJu0S-G_DR-elzcpru8La32A5MMWteA1a0Sh8RfNT4ZI</recordid><startdate>200912</startdate><enddate>200912</enddate><creator>苏泳涛张贤达</creator><general>Elsevier Ltd</general><general>Department of Automation, Tsinghua University, Beijing 100084, China</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W92</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>200912</creationdate><title>Robust Precoding Schemes for Multi-User MISO-OFDM Downlink with Limited Time-Domain Feedback</title><author>苏泳涛张贤达</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2338-88276af13a4dbc2290e9934a84f7c79504031024cbe1bb3dffd73d9e88fb582e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>linear precoding</topic><topic>multiple-input single-output (MISO)</topic><topic>OFDM</topic><topic>orthogonal frequency-division multiplexing (OFDM)</topic><topic>Tomlinson-Harashima precoding (THP)</topic><topic>信息反馈</topic><topic>多用户</topic><topic>时间域</topic><topic>正交频分复用</topic><topic>预编码</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>苏泳涛张贤达</creatorcontrib><collection>维普_期刊</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>维普中文期刊数据库</collection><collection>中文科技期刊数据库-工程技术</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Tsinghua science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>苏泳涛张贤达</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Robust Precoding Schemes for Multi-User MISO-OFDM Downlink with Limited Time-Domain Feedback</atitle><jtitle>Tsinghua science and technology</jtitle><addtitle>Tsinghua Science and Technology</addtitle><date>2009-12</date><risdate>2009</risdate><volume>14</volume><issue>6</issue><spage>725</spage><epage>731</epage><pages>725-731</pages><issn>1007-0214</issn><eissn>1878-7606</eissn><eissn>1007-0214</eissn><abstract>In multi-user multiple-input single-output orthogonal frequency-division multiplexing （MISO-OFDM） downlinks with limited feedback, both linear precoders （LP） and Tomlinson-Harashima precoders （THP） experience performance degradation due to inaccurate channel state information at the transmitter （CSIT）. 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subjects	linear precoding multiple-input single-output (MISO) OFDM orthogonal frequency-division multiplexing (OFDM) Tomlinson-Harashima precoding (THP) 信息反馈多用户时间域正交频分复用预编码
title	Robust Precoding Schemes for Multi-User MISO-OFDM Downlink with Limited Time-Domain Feedback
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