Subcarrier pairing and relay assignment with improved user fairness in a multi-user cooperative OFDM system
Munasinghe, Gayan & Jayalath, Dhammika (2012) Subcarrier pairing and relay assignment with improved user fairness in a multi-user cooperative OFDM system. In Australasian Telecommunication Networks and Applications Conference 2012, 7-9 November, 2012, Brisbane, Qld. (In Press)
We consider a joint relay selection and subcarrier allocation problem that minimizes the total system power for
a multi-user, multi-relay and single source cooperative OFDM
based two hop system. The system is constrained to all users
having a specific subcarrier requirement (user fairness). However no specific fairness constraints for relays are considered. To ensure the optimum power allocation, the subcarriers in two hops are paired with each other. We obtain an optimal subcarrier allocation for the single user case using a similar method to what is described in  and modify the algorithm for multiuser scenario. Although the optimality is not achieved in multiuser case the probability of all users being served fairly is improved
significantly with a relatively low cost trade off.
Citation countsare sourced monthly fromand citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.
|Item Type:||Conference Paper|
|Additional Information:||Session best paper authors will be invited to submit a paper to the Australian Journal of Electrical and Electronics Engineering June 2013 special issue on telecommunication networks and applications.|
|Keywords:||Subcarrier Pairing, OFDM, Cooperation|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Electrical and Electronic Engineering not elsewhere classified (090699)|
|Divisions:||Current > Schools > School of Electrical Engineering & Computer Science|
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2012 please consult the authors|
|Deposited On:||13 Nov 2012 10:49|
|Last Modified:||20 Feb 2013 14:24|
Repository Staff Only: item control page