Abstract
We consider a two transmit antenna broadcast system with heterogeneous users, and tackle the problem of maximizing a weighted sum rate. We establish a novel upper bound for the weighted sum capacity, which we then use to show that the maximum expected weighted sum rate can be asymptotically achieved by transmitting to a suitably selected subset of at most 2C users, where C denotes the number of distinct user classes. Numerical experiments indicate that the asymptotic results are remarkably accurate and that the proposed schemes operate close to absolute performance bounds, even for a moderate number of users.
Original language | English |
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Title of host publication | 44th Annual Allerton Conference on Communication, Control, and Computing 2006 |
Place of Publication | Champaign, IL |
Publisher | University of Illinois Press |
Pages | 289-298 |
Number of pages | 10 |
Volume | 1 |
ISBN (Print) | 9781604237924 |
Publication status | Published - Sept 2006 |
Externally published | Yes |
Event | 44th Annual Allerton Conference on Communication, Control, and Computing - 2006 - Monticello, United States Duration: 27 Sept 2006 → 29 Sept 2006 |
Other
Other | 44th Annual Allerton Conference on Communication, Control, and Computing - 2006 |
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Country/Territory | United States |
City | Monticello |
Period | 27/09/06 → 29/09/06 |