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 and Antenna Systems, Communication Systems

Giuseppe Durisi

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Johan Östman

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Wei Yang

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

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)

Vol. 63 10 3621-3632 07185371

Areas of Advance

Information and Communication Technology

Subject Categories

Communication Systems

DOI

10.1109/TCOMM.2015.2466536

More information

Created

10/7/2017