@inproceedings{b81c3beb075847bf9055ef63dcf176ec,
title = "Capacity of block Rayleigh fading channels without CSI",
abstract = "A system with a single antenna at the transmitter and receiver and no channel state information at either is considered. The channel experiences block Rayleigh fading with a coherence time of T0 symbol times and the fading statistics are assumed to be known perfectly. The system operates with a finite average transmit power. It is shown that the capacity optimal input distribution in the T0-dimensional space is the product of the distribution of an isotropically-distributed unit vector and a distribution on the 2-norm in the T0-dimensional space which is discrete and has a finite number of points in the support. Numerical evaluations of this distribution and the associated capacity for a channel with fading and Gaussian noise for a coherence time T0 = 2 are presented for representative SNRs. It is also shown numerically that an implicit channel estimation is done by the capacity-achieving scheme.",
keywords = "Block fading channels, capacityachieving input distribution, no CSI, noncoherent communications",
author = "Mainak Chowdhury and Andrea Goldsmith",
note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 2016 IEEE International Symposium on Information Theory, ISIT 2016 ; Conference date: 10-07-2016 Through 15-07-2016",
year = "2016",
month = aug,
day = "10",
doi = "10.1109/ISIT.2016.7541626",
language = "English (US)",
series = "IEEE International Symposium on Information Theory - Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1884--1888",
booktitle = "Proceedings - ISIT 2016; 2016 IEEE International Symposium on Information Theory",
address = "United States",
}