Abstract
Carrier frequency-offsets and mobility-induced Doppler shifts introduce time-selectivity in wireless links. Doppler-RAKE receivers have been developed for collecting the resulting diversity gains only for spread-spectrum systems. Relying on a basis expansion model of time-selective channels, we find that the maximum achievable Doppler diversity is determined by the rank of the correlation matrix of the channel's expansion coefficients. We also prove that RAKE reception can not collect maximum diversity gains, unless the transmission is appropriately designed. Finally, we design such block precoded transmissions to ensure maximum diversity gains, and provide thorough simulations to corroborate our theoretical findings.
| Original language | English (US) |
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| Title of host publication | IEEE Wireless Communications and Networking Conference, WCNC |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 497-501 |
| Number of pages | 5 |
| ISBN (Electronic) | 0780373766 |
| DOIs | |
| State | Published - 2002 |
| Event | 2002 IEEE Wireless Communications and Networking Conference, WCNC 2002 - Orlando, United States Duration: Mar 17 2002 → Mar 21 2002 |
Publication series
| Name | IEEE Wireless Communications and Networking Conference, WCNC |
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| Volume | 1 |
| ISSN (Print) | 1525-3511 |
Other
| Other | 2002 IEEE Wireless Communications and Networking Conference, WCNC 2002 |
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| Country/Territory | United States |
| City | Orlando |
| Period | 3/17/02 → 3/21/02 |
Bibliographical note
Publisher Copyright:© 2002 IEEE.