Optimum power allocation and control for OFDM in multiple access channels

@article{Oh2004OptimumPA,
  title={Optimum power allocation and control for OFDM in multiple access channels},
  author={Jisung Oh and Seung-Jean Kim and John M. Cioffi},
  journal={IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004},
  year={2004},
  volume={2},
  pages={774-778 Vol. 2}
}
This paper considers optimal power allocation in a multiple access channel, where multiuser orthogonal frequency division multiplexing is employed. We propose a power allocation algorithm for minimizing the sum of transmitted powers, when each of users in a multiple access cell has a desired data rate. The optimal power allocation can be found very efficiently by an iterative algorithm. The minimum sum power and the convergence behavior turn out to be strongly dependent on the decoding order of… CONTINUE READING
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