DOA Estimation in the Uplink of Multicarrier CDMA Systems
<p/> <p>We consider the uplink of a multicarrier code-division multiple-access (MC-CDMA) network and assume that the base station is endowed with a uniform linear array. Transmission takes place over a multipath channel and the goal is the estimation of the directions of arrival (DOAs) o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2008-01-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Online Access: | http://jwcn.eurasipjournals.com/content/2008/851726 |
| _version_ | 1818272120138891264 |
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| author | D'Amico AntonioA Morelli Michele Sanguinetti Luca |
| author_facet | D'Amico AntonioA Morelli Michele Sanguinetti Luca |
| author_sort | D'Amico AntonioA |
| collection | DOAJ |
| description | <p/> <p>We consider the uplink of a multicarrier code-division multiple-access (MC-CDMA) network and assume that the base station is endowed with a uniform linear array. Transmission takes place over a multipath channel and the goal is the estimation of the directions of arrival (DOAs) of the signal from the active users. In a multiuser scenario, difficulties are primarily due to the large number of parameters involved in the estimation of the DOAs which makes this problem much more challenging than in single-user transmissions. The solution we propose allows estimating the DOAs of different users independently, thereby leading to a significant reduction in the system complexity. In the presence of multipath propagation, however, estimating the DOAs of a given user through maximum-likelihood methods remains a formidable task since it involves a search over a multidimensional domain. Therefore, we look for simpler solutions and discuss two alternative schemes based on the SAGE and ESPRIT algorithms.</p> |
| first_indexed | 2024-12-12T21:37:01Z |
| format | Article |
| id | doaj.art-97d12486d7d84a0d9d3a47bb6e4c46a0 |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-12T21:37:01Z |
| publishDate | 2008-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-97d12486d7d84a0d9d3a47bb6e4c46a02022-12-22T00:11:09ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992008-01-0120081851726DOA Estimation in the Uplink of Multicarrier CDMA SystemsD'Amico AntonioAMorelli MicheleSanguinetti Luca<p/> <p>We consider the uplink of a multicarrier code-division multiple-access (MC-CDMA) network and assume that the base station is endowed with a uniform linear array. Transmission takes place over a multipath channel and the goal is the estimation of the directions of arrival (DOAs) of the signal from the active users. In a multiuser scenario, difficulties are primarily due to the large number of parameters involved in the estimation of the DOAs which makes this problem much more challenging than in single-user transmissions. The solution we propose allows estimating the DOAs of different users independently, thereby leading to a significant reduction in the system complexity. In the presence of multipath propagation, however, estimating the DOAs of a given user through maximum-likelihood methods remains a formidable task since it involves a search over a multidimensional domain. Therefore, we look for simpler solutions and discuss two alternative schemes based on the SAGE and ESPRIT algorithms.</p>http://jwcn.eurasipjournals.com/content/2008/851726 |
| spellingShingle | D'Amico AntonioA Morelli Michele Sanguinetti Luca DOA Estimation in the Uplink of Multicarrier CDMA Systems EURASIP Journal on Wireless Communications and Networking |
| title | DOA Estimation in the Uplink of Multicarrier CDMA Systems |
| title_full | DOA Estimation in the Uplink of Multicarrier CDMA Systems |
| title_fullStr | DOA Estimation in the Uplink of Multicarrier CDMA Systems |
| title_full_unstemmed | DOA Estimation in the Uplink of Multicarrier CDMA Systems |
| title_short | DOA Estimation in the Uplink of Multicarrier CDMA Systems |
| title_sort | doa estimation in the uplink of multicarrier cdma systems |
| url | http://jwcn.eurasipjournals.com/content/2008/851726 |
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