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Cooperative Estimation of Path Loss in Interference Channels Without Primary-User CSI Feedback

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2 Author(s)
Juei-Chin Shen ; Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK ; Alsusa, E.

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.

Published in:

Signal Processing Letters, IEEE  (Volume:20 ,  Issue: 3 )

Date of Publication:

March 2013

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