Abstract
We study the performance of a UMTS downlink, as achieved by a single-user (RAKE) and a multiuser (linear MMSE) receiver with adaptive modulation and multicode in the presence of multipath fading. We advocate an adaptive transmission scheme that varies the number of virtual users and the modulation spectral efficiency in order to optimize the system throughput. Two multipath channel models are considered, exhibiting 3 and 9 paths, respectively. Over the more favorable multipath channel, the multiuser MMSE receiver yields a significant performance enhancement with respect to the RAKE receiver.
| Original language | English |
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| Pages | 1272-1276 |
| Number of pages | 5 |
| Publication status | Published - 1 Dec 2001 |
| Externally published | Yes |
| Event | IEEE Global Telecommunications Conference 2001 - San Antonio, United States of America Duration: 25 Nov 2001 → 29 Nov 2001 https://ieeexplore.ieee.org/xpl/conhome/7633/proceeding (Proceedings) |
Conference
| Conference | IEEE Global Telecommunications Conference 2001 |
|---|---|
| Abbreviated title | IEEE GLOBECOM 2001 |
| Country | United States of America |
| City | San Antonio |
| Period | 25/11/01 → 29/11/01 |
| Internet address |
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