CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels
<p>Wireless code-division multiple-access (CDMA) cellular downlink communications with transmit antenna arrays in multipath fading channels is studied. Various array signal processing techniques at the transmit end are investigated and compared under various settings, in conjunction with power...
| 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/S1687147204404034 |
| _version_ | 1818556681111470080 |
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| author | Dai Huaiyu Mailaender Laurence Poor H. Vincent |
| author_facet | Dai Huaiyu Mailaender Laurence Poor H. Vincent |
| author_sort | Dai Huaiyu |
| collection | DOAJ |
| description | <p>Wireless code-division multiple-access (CDMA) cellular downlink communications with transmit antenna arrays in multipath fading channels is studied. Various array signal processing techniques at the transmit end are investigated and compared under various settings, in conjunction with power control. No instant downlink channel information is assumed; however, the obtained results are also compared with results assuming ideal feedback. The study is carried out for both circuit-switched and packet-switched systems, where different goals are pursued and different conclusions are drawn. In particular, it is found that the traffic type impacts the algorithm choice in downlink transmission, and that there is no need to seek optimum power control/allocation schemes, which are either too complex or infeasible in practice. Another interesting conclusion is that, even though feedback does not help much for packet-switched systems, it does help for circuit-switched systems, the gain of which increases with the number of antennas.</p> |
| first_indexed | 2024-12-13T23:50:23Z |
| format | Article |
| id | doaj.art-dc1b1b5c6b20436a89425e9f9704b065 |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-13T23:50:23Z |
| publishDate | 2004-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-dc1b1b5c6b20436a89425e9f9704b0652022-12-21T23:26:48ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992004-01-01200413245CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading ChannelsDai HuaiyuMailaender LaurencePoor H. Vincent<p>Wireless code-division multiple-access (CDMA) cellular downlink communications with transmit antenna arrays in multipath fading channels is studied. Various array signal processing techniques at the transmit end are investigated and compared under various settings, in conjunction with power control. No instant downlink channel information is assumed; however, the obtained results are also compared with results assuming ideal feedback. The study is carried out for both circuit-switched and packet-switched systems, where different goals are pursued and different conclusions are drawn. In particular, it is found that the traffic type impacts the algorithm choice in downlink transmission, and that there is no need to seek optimum power control/allocation schemes, which are either too complex or infeasible in practice. Another interesting conclusion is that, even though feedback does not help much for packet-switched systems, it does help for circuit-switched systems, the gain of which increases with the number of antennas.</p>http://dx.doi.org/10.1155/S1687147204404034CDMAdownlink transmissionmultipath fadingpower controltransmit arrays |
| spellingShingle | Dai Huaiyu Mailaender Laurence Poor H. Vincent CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels EURASIP Journal on Wireless Communications and Networking CDMA downlink transmission multipath fading power control transmit arrays |
| title | CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels |
| title_full | CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels |
| title_fullStr | CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels |
| title_full_unstemmed | CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels |
| title_short | CDMA Downlink Transmission with Transmit Antenna Arrays and Power Control in Multipath Fading Channels |
| title_sort | cdma downlink transmission with transmit antenna arrays and power control in multipath fading channels |
| topic | CDMA downlink transmission multipath fading power control transmit arrays |
| url | http://dx.doi.org/10.1155/S1687147204404034 |
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