1. Greedy Scheduling Performance for a Zero-Forcing Dirty-Paper Coded System.
- Author
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Jing Jiang, Buehrer, R. Michael, and Tranter, William H.
- Subjects
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WIRELESS communications , *MULTIUSER computer systems , *DISTRIBUTED computing , *ANTENNA arrays , *BROADCASTING industry , *DATA transmission systems , *DIGITAL communications , *RADIO transmitter-receivers , *POWER amplifiers - Abstract
This letter presents two results for multiuser wireless systems employing dirty-paper coding strategies along with greedy scheduling over the broadcast multiple-input multiple-output channel. Specifically, an efficient and suboptimal downlink scheduler is proposed to approximate the maximum sum rate using equal power allocation, and it is shown to approach the maximum sum rate of optimal power allocation for a large number of users under optimal scheduling. The second result demonstrates that the average maximum sum rate can be tightly upper bounded when spatial multiplexing is maximized. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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