Constrained Joint Bit and Power Allocation for Multicarrier Systems

Ebrahim Bedeer Mohamed, Octavia A. Dobre, Mohamed Hossam Ahmed, Kareem E. Baddour

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)
37 Downloads (Pure)


This paper proposes a novel low complexity joint bit and power suboptimal allocation algorithm for multicarrier systems operating in fading environments. The algorithm jointly maximizes the throughput and minimizes the transmitted power, while guaranteeing a target bit error rate (BER) per subcarrier and meeting a constraint on the total transmit power. Simulation results are described that illustrate the performance of the proposed scheme and demonstrate its superiority when compared to the algorithm in [4] with similar or reduced computational complexity. Furthermore, the results show that the performance of the proposed suboptimal algorithm approaches that of an optimal exhaustive search with significantly lower computational complexity.
Original languageEnglish
Journal2012 IEEE Global Communications Conference (GLOBECOM)
Publication statusPublished (in print/issue) - 23 Apr 2013
Event 2012 IEEE Global Communications Conference (GLOBECOM) - Anaheim, United States
Duration: 3 Dec 20127 Dec 2012


  • Adaptive modulation
  • bit allocation
  • joint optimization
  • multicarrier systems
  • power allocation


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