Frank, Tobias ; Costa, Elena ; Klein, Anja (2006)
Low complexity multi carrier multiple access with cyclic delay diversity.
International ITG/IEEE Workshop on Smart Antennas (WSA 2006). Ulm, Germany (13-14 March 2006)
Conference or Workshop Item, Bibliographie
Abstract
In this paper, the performance of Discrete Fourier Trans- form (DFT) precoded Orthogonal Frequency Division Multiple Access (OFDMA) schemes with interleaved and with blockwise subcarrier allocation is investigated and compared. Transmission with one transmit antenna is compared to transmission with multiple transmit anten- nas using Cyclic Delay Diversity (CDD). It is shown that the investigated DFT precoded OFDMA schemes with CDD provide low computational complexity and good power efficiency due to low envelope fluctuations of the transmit signal at each transmit antenna. Moreover, it is shown that, depending on the data rate, for one transmit antenna interleaved subcarrier allocation results in a sig- nificant performance gain compared to block allocation, whereas for multiple antennas this gain reduces. However, it is shown that even for high data rates DFT precoded OFDMA with interleaved subcarrier allocation is shown to outperform the scheme with block allocation.
| Item Type: | Conference or Workshop Item |
|---|---|
| Erschienen: | 2006 |
| Creators: | Frank, Tobias ; Costa, Elena ; Klein, Anja |
| Type of entry: | Bibliographie |
| Title: | Low complexity multi carrier multiple access with cyclic delay diversity |
| Language: | English |
| Date: | 2006 |
| Place of Publication: | Ulm, Germany |
| Event Title: | International ITG/IEEE Workshop on Smart Antennas (WSA 2006) |
| Event Location: | Ulm, Germany |
| Event Dates: | 13-14 March 2006 |
| Abstract: | In this paper, the performance of Discrete Fourier Trans- form (DFT) precoded Orthogonal Frequency Division Multiple Access (OFDMA) schemes with interleaved and with blockwise subcarrier allocation is investigated and compared. Transmission with one transmit antenna is compared to transmission with multiple transmit anten- nas using Cyclic Delay Diversity (CDD). It is shown that the investigated DFT precoded OFDMA schemes with CDD provide low computational complexity and good power efficiency due to low envelope fluctuations of the transmit signal at each transmit antenna. Moreover, it is shown that, depending on the data rate, for one transmit antenna interleaved subcarrier allocation results in a sig- nificant performance gain compared to block allocation, whereas for multiple antennas this gain reduces. However, it is shown that even for high data rates DFT precoded OFDMA with interleaved subcarrier allocation is shown to outperform the scheme with block allocation. |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications 18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications > Communications Engineering |
| Date Deposited: | 20 Nov 2008 08:25 |
| Last Modified: | 17 May 2024 09:23 |
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