@inproceedings{c2c2d0165cd544e684ec2a9d14d6e5df,
title = "Low SNR capacity of fading channels with peak and average power constraints",
abstract = "Flat-fading channels that are correlated in time are considered under peak and average power constraints. For discrete-time channels, a new upper bound on the capacity per unit time is derived. A low SNR analysis of a full-scattering vector channel is used to derive a complimentary lower bound. Together, these bounds allow us to identify the exact scaling of channel capacity for a fixed peak to average ratio, as the average power converges to zero. The upper bound is also asymptotically tight as the average power converges to zero for a fixed peak power. For a continuous time infinite bandwidth channel, Viterbi identified the capacity for M-FSK modulation. Recently, Zhang and Laneman showed that the capacity can be achieved with non-bursty signaling (QPSK). An additional contribution of this paper is to obtain similar results under peak and average power constraints.",
keywords = "Channel capacity, Correlated fading, Flat fading, Gauss Markov fading, Low SNR",
author = "Vignesh Sethuraman and Bruce Hajek",
year = "2006",
doi = "10.1109/ISIT.2006.261620",
language = "English (US)",
isbn = "1424405041",
series = "IEEE International Symposium on Information Theory - Proceedings",
pages = "689--693",
booktitle = "Proceedings - 2006 IEEE International Symposium on Information Theory, ISIT 2006",
note = "2006 IEEE International Symposium on Information Theory, ISIT 2006 ; Conference date: 09-07-2006 Through 14-07-2006",
}