dorsal/arxiv
View SchemaHigh signal-to-noise ratio asymptotics of entropy-constrained Gaussian channel capacity
| Authors | Adway Girish, Shlomo Shamai, Emre Telatar |
|---|---|
| Categories | |
| ArXiv ID | 2601.09864vv1 |
| URL | https://arxiv.org/abs/2601.09864 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
We study the input-entropy-constrained Gaussian channel capacity problem in the asymptotic high signal-to-noise ratio (SNR) regime. We show that the capacity-achieving distribution as SNR goes to infinity is given by a discrete Gaussian distribution supported on a scaled integer lattice. Further, we show that the gap between the input entropy and the capacity decreases to zero exponentially in SNR, and characterize this exponent.
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"abstract": "We study the input-entropy-constrained Gaussian channel capacity problem in the asymptotic high signal-to-noise ratio (SNR) regime. We show that the capacity-achieving distribution as SNR goes to infinity is given by a discrete Gaussian distribution supported on a scaled integer lattice. Further, we show that the gap between the input entropy and the capacity decreases to zero exponentially in SNR, and characterize this exponent.",
"arxiv_id": "2601.09864",
"authors": [
"Adway Girish",
"Shlomo Shamai",
"Emre Telatar"
],
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"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "High signal-to-noise ratio asymptotics of entropy-constrained Gaussian channel capacity",
"url": "https://arxiv.org/abs/2601.09864",
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