Abstract
This paper considers the multiuser multiple-input multiple-output (MIMO) Rayleigh fading broadcast channel. We consider the case where the multiple transmit antennas are used to deliver independent data streams to multiple users via a multi-user technique known as vector perturbation. We derive expressions for the capacity in terms of the average energy of the precoded vector, and use this to derive a closed-form high-SNR upper bound, which we show to be tight via simulation. We then turn to the practical issue of user selection. We propose a low-complexity user selection algorithm that attempts to maximize the high-SNR sum rate upper bound. Simulations show that the algorithm outperforms other user selection algorithms of similar complexity.
Original language | English |
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Title of host publication | Proceedings - 2009 IEEE International Conference on Communications, ICC 2009 |
Place of Publication | Pistacaway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 1-5 |
Number of pages | 5 |
ISBN (Print) | 9781424434350 |
DOIs | |
Publication status | Published - 2009 |
Externally published | Yes |
Event | 2009 IEEE International Conference on Communications, ICC - 2009 - Dresden, Germany Duration: 14 Jun 2009 → 18 Jun 2009 |
Other
Other | 2009 IEEE International Conference on Communications, ICC - 2009 |
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Country/Territory | Germany |
City | Dresden |
Period | 14/06/09 → 18/06/09 |