Abstract
Assuming additive Gaussian noise, a general sufficient condition on the input distribution is established to guarantee that the ratio of mutual information to signal-to-noise ratio (SNR) goes to one half nat as SNR vanishes. The result allows SNR-dependent input distribution and side information.
Original language | English (US) |
---|---|
Article number | 5953516 |
Pages (from-to) | 7307-7312 |
Number of pages | 6 |
Journal | IEEE Transactions on Information Theory |
Volume | 57 |
Issue number | 11 |
DOIs | |
State | Published - Nov 1 2011 |
Keywords
- Gaussian noise
- low-power regime
- minimum mean-square error (MMSE)
- mutual information
- signal-to-noise ratio (SNR)
ASJC Scopus subject areas
- Information Systems
- Computer Science Applications
- Library and Information Sciences