Effects of Channel Estimation on Multiuser Virtual MIMO-OFDMA Relay-Based Networks
<p/> <p>A practical multiuser cooperative transmission scheme denoted as <it>Virtual Maximum Ratio Transmission</it> (VMRT) for multiple-input multiple-output-orthogonal frequency division multiple access (MIMO-OFDMA) relay-based networks is proposed and evaluated in the pres...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2010-01-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Online Access: | http://jwcn.eurasipjournals.com/content/2010/764784 |
| _version_ | 1817968400268263424 |
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| author | Ribeiro Carlos Gameiro Atilio Gil Jiménez VíctorP Armada AnaGarcía |
| author_facet | Ribeiro Carlos Gameiro Atilio Gil Jiménez VíctorP Armada AnaGarcía |
| author_sort | Ribeiro Carlos |
| collection | DOAJ |
| description | <p/> <p>A practical multiuser cooperative transmission scheme denoted as <it>Virtual Maximum Ratio Transmission</it> (VMRT) for multiple-input multiple-output-orthogonal frequency division multiple access (MIMO-OFDMA) relay-based networks is proposed and evaluated in the presence of a realistic channel estimation algorithm and using low-density parity-check (LDPC) codes. It is shown that this scheme is robust against channel estimation errors. It offers diversity and array gain, keeping the complexity low with a multiuser and multiantenna channel estimation algorithm that is simple and efficient. In addition, the combination with LDPC codes provides improved gains; diversity gains larger than 6 dB can be easily obtained with a reduced number of relays. Thus, this scheme can be used to extend coverage or increase system throughput by using simple cooperative OFDMA-based relays.</p> |
| first_indexed | 2024-04-13T20:08:26Z |
| format | Article |
| id | doaj.art-f1f38cf8bcec45879c13fc2e7fdc526a |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-04-13T20:08:26Z |
| publishDate | 2010-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-f1f38cf8bcec45879c13fc2e7fdc526a2022-12-22T02:31:56ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992010-01-0120101764784Effects of Channel Estimation on Multiuser Virtual MIMO-OFDMA Relay-Based NetworksRibeiro CarlosGameiro AtilioGil Jiménez VíctorPArmada AnaGarcía<p/> <p>A practical multiuser cooperative transmission scheme denoted as <it>Virtual Maximum Ratio Transmission</it> (VMRT) for multiple-input multiple-output-orthogonal frequency division multiple access (MIMO-OFDMA) relay-based networks is proposed and evaluated in the presence of a realistic channel estimation algorithm and using low-density parity-check (LDPC) codes. It is shown that this scheme is robust against channel estimation errors. It offers diversity and array gain, keeping the complexity low with a multiuser and multiantenna channel estimation algorithm that is simple and efficient. In addition, the combination with LDPC codes provides improved gains; diversity gains larger than 6 dB can be easily obtained with a reduced number of relays. Thus, this scheme can be used to extend coverage or increase system throughput by using simple cooperative OFDMA-based relays.</p>http://jwcn.eurasipjournals.com/content/2010/764784 |
| spellingShingle | Ribeiro Carlos Gameiro Atilio Gil Jiménez VíctorP Armada AnaGarcía Effects of Channel Estimation on Multiuser Virtual MIMO-OFDMA Relay-Based Networks EURASIP Journal on Wireless Communications and Networking |
| title | Effects of Channel Estimation on Multiuser Virtual MIMO-OFDMA Relay-Based Networks |
| title_full | Effects of Channel Estimation on Multiuser Virtual MIMO-OFDMA Relay-Based Networks |
| title_fullStr | Effects of Channel Estimation on Multiuser Virtual MIMO-OFDMA Relay-Based Networks |
| title_full_unstemmed | Effects of Channel Estimation on Multiuser Virtual MIMO-OFDMA Relay-Based Networks |
| title_short | Effects of Channel Estimation on Multiuser Virtual MIMO-OFDMA Relay-Based Networks |
| title_sort | effects of channel estimation on multiuser virtual mimo ofdma relay based networks |
| url | http://jwcn.eurasipjournals.com/content/2010/764784 |
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