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This work looks into the extension of the proportional fair (PF) scheduler to the multi-user case, where the source is transmitting several messages under the superposition coding (SC) strategy in a Gaussian Broadcast channel. Jointly with the weighted sum-rate (WSR) scheduling criterion, we derive guidelines for 2-user pairing, based both on SNR and user priority. We compare superposition coding access with frequency division multiple access, while time division is obtained naturally as a result of the user pairing. Results elucidate that the 2-user SC PF always improves the single-user PF in terms of average throughput and delay reduction, and we compare its performance with the 3-user SC PF. Finally, the WSR shows throughput gains similar to the 2-user SC PF for certain configuration of the scheduler.
Published in:
Communications (ICC), 2010 IEEE International Conference on
Date of Conference: 23-27 May 2010
- Page(s):
- 1 - 5
- ISSN :
- 1550-3607
- Print ISBN:
- 978-1-4244-6402-9
- INSPEC Accession Number:
- 11412621
- Conference Location :
- Cape Town
- Digital Object Identifier :
- 10.1109/ICC.2010.5502466
- Product Type:
- Conference Publications
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