Outage Performance of Flexible OFDM Schemes in Packet-Switched Transmissions
α-OFDM, a generalization of the OFDM modulation, is proposed. This new modulation enhances the outage capacity performance of bursty communications. The α-OFDM scheme is easily implementable as it only requires an additional time symbol rotation after the IDFT stage and a subse...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2009-01-01
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| Series: | EURASIP Journal on Advances in Signal Processing |
| Online Access: | http://dx.doi.org/10.1155/2009/698417 |
| _version_ | 1811279644239855616 |
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| author | Romain Couillet Mérouane Debbah |
| author_facet | Romain Couillet Mérouane Debbah |
| author_sort | Romain Couillet |
| collection | DOAJ |
| description | α-OFDM, a generalization of the OFDM modulation, is proposed. This new modulation enhances the outage capacity performance of bursty communications. The α-OFDM scheme is easily implementable as it only requires an additional time symbol rotation after the IDFT stage and a subsequent phase rotation of the cyclic prefix. The physical effect of the induced rotation is to slide the DFT window over the frequency spectrum. When successively used with different angles α at the symbol rate, α-OFDM provides frequency diversity in block fading channels. Interestingly, simulation results show a substantial gain in terms of outage capacity and outage BER in comparison with classical OFDM modulation schemes. The framework is extended to multiantenna and multicellular OFDM-based standards. Practical simulations, in the context of 3GPP-LTE, called hereafter α-LTE, sustain our theoretical claims. |
| first_indexed | 2024-04-13T00:58:18Z |
| format | Article |
| id | doaj.art-10144f0013884dba86aafceaccc5c3ff |
| institution | Directory Open Access Journal |
| issn | 1687-6172 1687-6180 |
| language | English |
| last_indexed | 2024-04-13T00:58:18Z |
| publishDate | 2009-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-10144f0013884dba86aafceaccc5c3ff2022-12-22T03:09:32ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802009-01-01200910.1155/2009/698417Outage Performance of Flexible OFDM Schemes in Packet-Switched TransmissionsRomain CouilletMérouane Debbahα-OFDM, a generalization of the OFDM modulation, is proposed. This new modulation enhances the outage capacity performance of bursty communications. The α-OFDM scheme is easily implementable as it only requires an additional time symbol rotation after the IDFT stage and a subsequent phase rotation of the cyclic prefix. The physical effect of the induced rotation is to slide the DFT window over the frequency spectrum. When successively used with different angles α at the symbol rate, α-OFDM provides frequency diversity in block fading channels. Interestingly, simulation results show a substantial gain in terms of outage capacity and outage BER in comparison with classical OFDM modulation schemes. The framework is extended to multiantenna and multicellular OFDM-based standards. Practical simulations, in the context of 3GPP-LTE, called hereafter α-LTE, sustain our theoretical claims.http://dx.doi.org/10.1155/2009/698417 |
| spellingShingle | Romain Couillet Mérouane Debbah Outage Performance of Flexible OFDM Schemes in Packet-Switched Transmissions EURASIP Journal on Advances in Signal Processing |
| title | Outage Performance of Flexible OFDM Schemes in Packet-Switched Transmissions |
| title_full | Outage Performance of Flexible OFDM Schemes in Packet-Switched Transmissions |
| title_fullStr | Outage Performance of Flexible OFDM Schemes in Packet-Switched Transmissions |
| title_full_unstemmed | Outage Performance of Flexible OFDM Schemes in Packet-Switched Transmissions |
| title_short | Outage Performance of Flexible OFDM Schemes in Packet-Switched Transmissions |
| title_sort | outage performance of flexible ofdm schemes in packet switched transmissions |
| url | http://dx.doi.org/10.1155/2009/698417 |
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