Finite-SNR Bounds on the Sum-Rate Capacity of Rayleigh Block-Fading Multiple-Access Channels with no a Priori CSI
Journal article, 2015
We provide nonasymptotic upper and lower bounds on the sum-rate capacity of Rayleigh block-fading multiple-access channels for the set up where a priori channel state information is not available. The upper bound relies on a dual formula for chan- nel capacity and on the assumption that the users can cooperate perfectly. The lower bound is derived assuming a noncooperative scenario where each user employs unitary space-time modulation (independently from the other users). Numerical results show that the gap between the upper and the lower bound is small already at moderate SNR values. This suggests that the sum-rate capac- ity gains obtainable through user cooperation are minimal for the scenarios considered in the paper.
Channel capacity
multiuser channels
time-varying channels
channel state information
Author
Rahul Devassy
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Giuseppe Durisi
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Johan Östman
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Wei Yang
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Tome Eftimov
Macedonian Academy of Sciences and Arts
Zoran Utkovski
Macedonian Academy of Sciences and Arts
Goce Delchev University - Stip
IEEE Transactions on Communications
0090-6778 (ISSN) 15580857 (eISSN)
Vol. 63 10 3621-3632 07185371Areas of Advance
Information and Communication Technology
Subject Categories
Communication Systems
DOI
10.1109/TCOMM.2015.2466536