|Robust Gaussian Joint Source-Channel Coding Under the Near-Zero Bandwidth Regime
|Mohammadamin Baniasadi, Ertem Tuncel, UC Riverside, United States
|O.5: Topics in Source Coding
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|Minimum power required to achieve a distortion-noise profile, i.e., a function indicating the maximum allowed distortion value for each noise level, is studied for the transmission of Gaussian sources over Gaussian channels under a regime of bandwidth approaching zero. A simple but instrumental lower bound to the minimum required power for a given profile is presented. For an upper bound, a dirty-paper based coding scheme is proposed and its power-distortion tradeoff is analyzed. Finally, upper and lower bounds to the minimum power is analyzed and compared for specific distortion-noise profiles, namely rational profiles with order one and two.