Semiblind channel estimation and equalization for MIMO space-time coded OFDM
Based on the special features of space-time coding (STC) and orthogonal frequency-division multiplexing (OFDM), it is mathematically proved that all channel responses of a multiple-input-multiple-output STC-OFDM system can be identified blindly subject to two ambiguity matrices with a subspace-based...
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| Veröffentlicht in: | IEEE transactions on circuits and systems. 1, Fundamental theory and applications Fundamental theory and applications, 2006-02, Vol.53 (2), p.463-474 |
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| container_end_page | 474 |
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| container_title | IEEE transactions on circuits and systems. 1, Fundamental theory and applications |
| container_volume | 53 |
| creator | Yonghong Zeng Lam, W.H. Tung Sang Ng |
| description | Based on the special features of space-time coding (STC) and orthogonal frequency-division multiplexing (OFDM), it is mathematically proved that all channel responses of a multiple-input-multiple-output STC-OFDM system can be identified blindly subject to two ambiguity matrices with a subspace-based method. A method is then presented to resolve the two ambiguity matrices by using few pilot symbols. With the estimated channels, a frequency domain approach is presented to recover the transmitted symbols. The presented semiblind algorithms are valid even if the channel transfer functions are not coprime and do not require precise channel order information (only an upper bound for the orders is required). |
| doi_str_mv | 10.1109/TCSI.2005.856671 |
| format | Article |
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A method is then presented to resolve the two ambiguity matrices by using few pilot symbols. With the estimated channels, a frequency domain approach is presented to recover the transmitted symbols. 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A method is then presented to resolve the two ambiguity matrices by using few pilot symbols. With the estimated channels, a frequency domain approach is presented to recover the transmitted symbols. The presented semiblind algorithms are valid even if the channel transfer functions are not coprime and do not require precise channel order information (only an upper bound for the orders is required).</description><subject>Ambiguity</subject><subject>Bandwidth</subject><subject>Blind</subject><subject>Channel estimation</subject><subject>Channels</subject><subject>Equalization</subject><subject>Frequency division multiplexing</subject><subject>Frequency domain analysis</subject><subject>Frequency estimation</subject><subject>Mathematical analysis</subject><subject>Matrices</subject><subject>Matrix methods</subject><subject>MIMO</subject><subject>multiple-input-multiple-output (MIMO)</subject><subject>multiuser</subject><subject>OFDM</subject><subject>Orthogonal Frequency Division Multiplexing</subject><subject>orthogonal frequency-division multiplexing (OFDM)</subject><subject>Pilots</subject><subject>Receiving antennas</subject><subject>semiblind</subject><subject>space-time coding (STC)</subject><subject>subspace</subject><subject>Symbols</subject><subject>Transfer functions</subject><subject>Transmitting antennas</subject><issn>1549-8328</issn><issn>1057-7122</issn><issn>1558-0806</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp9kc1Lw0AQxYMoWD_ugpfgQU-ps7vZr6NUq4WWHlrPy2Z3gilp0mbbg_71boggePA0w-P3hpl5SXJDYEwI6Mf1ZDUbUwA-VlwISU6SEeFcZaBAnPZ9rjPFqDpPLkLYAFANjIyS-Qq3VVFXjU_dh20arFMMh2prD1XbpDbKuD_auvoahLLt0sVssUzDzjrMIoipaz36dDl9XlwlZ6WtA17_1Mvkffqynrxl8-XrbPI0zxzj7JCxvKBEi1JadCq33kEhEbQSXkqm0QPk6Aqr-9W1FN4x6Yoi577MeeElssvkYZi769r9Me5rtlVwWNe2wfYYjFI6Z1IAi-T9vyRVBHLGVQTv_oCb9tg18QqjhKRaUioiBAPkujaEDkuz6-Kruk9DwPQpmD4F06dghhSi5XawVIj4i3PNNCfsG7SqgiY</recordid><startdate>20060201</startdate><enddate>20060201</enddate><creator>Yonghong Zeng</creator><creator>Lam, W.H.</creator><creator>Tung Sang Ng</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| identifier | ISSN: 1549-8328 |
| ispartof | IEEE transactions on circuits and systems. 1, Fundamental theory and applications, 2006-02, Vol.53 (2), p.463-474 |
| issn | 1549-8328 1057-7122 1558-0806 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Ambiguity Bandwidth Blind Channel estimation Channels Equalization Frequency division multiplexing Frequency domain analysis Frequency estimation Mathematical analysis Matrices Matrix methods MIMO multiple-input-multiple-output (MIMO) multiuser OFDM Orthogonal Frequency Division Multiplexing orthogonal frequency-division multiplexing (OFDM) Pilots Receiving antennas semiblind space-time coding (STC) subspace Symbols Transfer functions Transmitting antennas |
| title | Semiblind channel estimation and equalization for MIMO space-time coded OFDM |
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