Title :
Cooperative Estimation of Path Loss in Interference Channels Without Primary-User CSI Feedback
Author :
Juei-Chin Shen ; Alsusa, Emad
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK
Abstract :
Knowledge of the channel path-loss between a primary user and a secondary user in underlay cognitive radio systems could be vital for deciding how a secondary user accesses a specific frequency band. The conventional way to acquire this knowledge relies on some collaboration with primary user systems. This letter proposes a novel cooperative technique for estimating the path-loss parameter in cognitive radio interference channels without the need for channel measurements from any primary user. The results reveal that, relative to existing techniques, the proposed offers improved performance.
Keywords :
channel estimation; cognitive radio; radiofrequency interference; wireless channels; channel estimation; channel measurements; channel path loss; cooperative estimation; interference channels; primary-user CSI feedback; underlay cognitive radio systems; Channel estimation; Estimation; Fading; Interference channels; Receivers; Symmetric matrices; Channel estimation; cognitve radio; interference channel information; path loss;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2013.2243835