Joint sensing time and power allocation in cooperatively cognitive networks

Authors:
Chengshi Zhao;Kyungsup Kwak
Affiliations:
Graduate School of IT and Telecom., Inha University, Rep. of Korea and Wireless Network Lab, School of Information and Communications Engineering, Beijing University of Posts and Telecommunication ...;Graduate School of IT and Telecom., Inha University, Rep. of Korea
Venue:
IEEE Communications Letters
Year:
2010

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Abstract

The jointly optimal allocation of sensing time and power for a two-user amplify-and-forward overlay cognitive network is developed by maximizing the averaged aggregate throughput of the secondary network. In particular, observing that the sensing duration lies within a strict interval, the jointly optimal strategy of sensing time and power allocation is proved to be tractable by sequential optimization.