Author
Ding, Y., Uysal, Murat
Publication Date
2012-12
Publication Place
-
Springer Science+Business Media
Subject
Achievable rate, Amplify-and-forward relaying, Channel estimation, Power allocation, OFDM
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1687-1472
Record ID
05b180d1-44c7-4f91-90a8-97935a772fab
Library Location
Electrical & Electronics Engineering
Date
2012-12
Notes
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text
In this article, we investigate the information-theoretical performance of a cooperative orthogonal frequency division multiplexing (OFDM) system with imperfect channel estimation. Assuming the deployment of training-aided channel estimators, we derive a lower bound on the achievable rate for the cooperative OFDM system with amplify-and-forward relaying over frequency-selective Rayleigh fading channels. The bound is later utilized to allocate power among the training and data transmission phases. Numerical results demonstrate that the proposed power allocation scheme brings between 5 and 19% improvement depending on the level of signal-to-noise ratio and relay locations.
Cilt
372
