We consider a multiaccess Gaussian block fading channel where transmitters have causal state information and must deliver their message within a finite delay. Variable-rate coding with input power constraint enforced on a per-codeword basis is examined. We characterize the average capacity region and average capacity region per unit energy, the limiting behavior for large delay and the wideband slope of the spectral efficiency vs. (Eb=N0)dB.
The effect of delay constraint and causal feedback on the wideband performance of multi-access block fading channels
Asilomar 2001, 35th IEEE Annual Asilomar Conference on Signals, Systems and Computers, 4-7 November 2001 - Pacific Grove, USA
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