We consider the impact on transmit antenna diversity on a TDMA downlink with multiuser diversity scheduling, inspired by the 1xEV-DO scheme in 3G systems. Transmit diversity is examined under the adaptive scheduling policy that achieves the stability region of the transmit queues, and, in the case of infinite backlog, under proportional fair scheduling. We show that, in the realistic case of non-ideal data rate feedback information from the users to the base station, transmit diversity might achieve a larger stability region and is beneficial even for users with symmetric traffic or infinite backlog. These findings attenuate the common belief that “channel hardening” due to transmit diversity is always detrimental for multiuser diversity scheduling systems.
Antenna diversity versus multi-user diversity: Quantifying the trade-offs
ISITA 2004, International Symposium on Information Theory and its Applications, October 10-13, 2004, Parma, Italy
Type:
Conférence
City:
Parma
Date:
2004-10-10
Department:
Systèmes de Communication
Eurecom Ref:
1441
Copyright:
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See also:
PERMALINK : https://www.eurecom.fr/publication/1441
