Power Allocation for Discrete-Input Delay-Limited Fading Channels

  title={Power Allocation for Discrete-Input Delay-Limited Fading Channels},
  author={Khoa D. Nguyen and Albert Guill{\'e}n i F{\`a}bregas and Lars Kildehx00F8j Rasmussen},
We consider power allocation algorithms for fixed-rate transmission over Nakagami-m nonergodic block-fading channels with perfect transmitter and receiver channel state information and discrete input signal constellations, under both shortand long-term power constraints. Optimal power allocation schemes are shown to be direct applications of previous results in the literature. We show that the SNR exponent of the optimal short-term scheme is given by m times the Singleton bound. We also… CONTINUE READING


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