Blind Channel Estimation for Space-Time Coded WCDMA
<p>A new blind channel estimation technique is proposed for space-time coded wideband CDMA systems using aperiodic and possibly multirate spreading codes. Using a decorrelating front end, the received signal is projected onto a subspace from which channel parameters can be estimated up to a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2004-01-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1155/S1687147204406070 |
| _version_ | 1828967620910514176 |
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| author | Sung Youngchul Tong Lang Swami Ananthram |
| author_facet | Sung Youngchul Tong Lang Swami Ananthram |
| author_sort | Sung Youngchul |
| collection | DOAJ |
| description | <p>A new blind channel estimation technique is proposed for space-time coded wideband CDMA systems using aperiodic and possibly multirate spreading codes. Using a decorrelating front end, the received signal is projected onto a subspace from which channel parameters can be estimated up to a rotational ambiguity. Exploiting the subspace structure of the WCDMA signaling and the orthogonality of the unitary space-time codes, the proposed algorithm provides a blind channel estimate via least squares. A new identifiability condition is established under the assumption that the system is not heavily loaded. The mean square error of the estimated channel is compared with the Cramér-Rao bound, and the bit error rate (BER) performance of the proposed algorithm is compared with that of differential schemes.</p> |
| first_indexed | 2024-12-14T11:54:22Z |
| format | Article |
| id | doaj.art-5c407aa9db5045c08d80797af142f865 |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-14T11:54:22Z |
| publishDate | 2004-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-5c407aa9db5045c08d80797af142f8652022-12-21T23:02:09ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992004-01-0120042322334Blind Channel Estimation for Space-Time Coded WCDMASung YoungchulTong LangSwami Ananthram<p>A new blind channel estimation technique is proposed for space-time coded wideband CDMA systems using aperiodic and possibly multirate spreading codes. Using a decorrelating front end, the received signal is projected onto a subspace from which channel parameters can be estimated up to a rotational ambiguity. Exploiting the subspace structure of the WCDMA signaling and the orthogonality of the unitary space-time codes, the proposed algorithm provides a blind channel estimate via least squares. A new identifiability condition is established under the assumption that the system is not heavily loaded. The mean square error of the estimated channel is compared with the Cramér-Rao bound, and the bit error rate (BER) performance of the proposed algorithm is compared with that of differential schemes.</p>http://dx.doi.org/10.1155/S1687147204406070space-time codinglong code CDMAleast squaresblind channel estimation |
| spellingShingle | Sung Youngchul Tong Lang Swami Ananthram Blind Channel Estimation for Space-Time Coded WCDMA EURASIP Journal on Wireless Communications and Networking space-time coding long code CDMA least squares blind channel estimation |
| title | Blind Channel Estimation for Space-Time Coded WCDMA |
| title_full | Blind Channel Estimation for Space-Time Coded WCDMA |
| title_fullStr | Blind Channel Estimation for Space-Time Coded WCDMA |
| title_full_unstemmed | Blind Channel Estimation for Space-Time Coded WCDMA |
| title_short | Blind Channel Estimation for Space-Time Coded WCDMA |
| title_sort | blind channel estimation for space time coded wcdma |
| topic | space-time coding long code CDMA least squares blind channel estimation |
| url | http://dx.doi.org/10.1155/S1687147204406070 |
| work_keys_str_mv | AT sungyoungchul blindchannelestimationforspacetimecodedwcdma AT tonglang blindchannelestimationforspacetimecodedwcdma AT swamiananthram blindchannelestimationforspacetimecodedwcdma |