QoS aware adaptive resource allocation techniques for fair scheduling in OFDMA based broadband wireless access systems

Ergen M., Coleri S., Varaiya P.

IEEE TRANSACTIONS ON BROADCASTING, vol.49, no.4, pp.362-370, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 4
  • Publication Date: 2003
  • Doi Number: 10.1109/tbc.2003.819051
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.362-370
  • Istanbul Technical University Affiliated: No


A system based on orthogonal frequency division multiple access (OFDMA) has been developed to deliver mobile broadband data service at data rates comparable to those of wired services, such as DSL and cable modems. We consider the resource allocation problem of assigning a set of subcarriers And determining the number of bits to be transmitted for each subcarrier in OFDMA systems. We compare simplicity, fairness and efficiency of our algorithm with the optimal and proposed suboptimal algorithms for varying values of delay spread, number of users and total power constraint. The results show that performance of our approach is appealing and can be close to optimal.