A Novel Algorithm for Joint Bit and Power Loading for OFDM Systems with Unknown Interference

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

Research output: Contribution to journalConference article

4 Citations (Scopus)
11 Downloads (Pure)

Abstract

In this paper, a novel low complexity bit and power loading algorithm is formulated for orthogonal frequency division multiplexing (OFDM) systems operating in fading environments and in the presence of unknown interference. The proposed non-iterative algorithm jointly maximizes the throughput and minimizes the transmitted power, while guaranteeing a target bit error rate (BER) per subcarrier. Closed-form expressions are derived for the optimal bit and power distributions per subcarrier. The performance of the proposed algorithm is investigated through extensive simulations. A performance comparison with the algorithm shows the superiority of the proposed algorithm with reduced computational effort.
Original languageEnglish
Journal2012 IEEE International Conference on Communications (ICC)
DOIs
Publication statusPublished - 29 Nov 2012
Event2012 IEEE International Conference on Communications (ICC) - Ottawa, Canada
Duration: 10 Jun 201215 Jun 2012

Keywords

  • Adaptive modulation
  • bit loading
  • frequency selective channels
  • joint optimization
  • OFDM
  • power loading
  • unknown interference

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