Dynamic Spectrum Management: When is FDMA Sum-Rate Optimal?

  title={Dynamic Spectrum Management: When is FDMA Sum-Rate Optimal?},
  author={Shunsuke Hayashi and Zhi-Quan Luo},
  journal={2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07},
Consider a multiuser communication system in a frequency selective environment whereby users share a common spectrum and can interfere with each other. Assuming Gaussian signaling and treating interference as noise, we study optimal spectrum sharing strategies for the maximization of weighted sum-rate. In this work, we show that, if the normalized crosstalk gains are larger than a given threshold (roughly equal to 1/2), then the optimal spectrum sharing strategy is frequency division multiple… CONTINUE READING
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