标题：Resource allocation with delay QoS guarantees for spectrum sharing in cognitive radio networks
作者：Ma, Yanbo ;Ma, Piming ;Yang, Xiao ;Liu, Qiang ;Ma, Liuqing
作者机构：[Ma, Yanbo ;Yang, Xiao ;Liu, Qiang ] School of Management Science and Engineering, Shandong University of Finance and Economics, Jinan, China;[Ma, Pim 更多
会议名称：26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015
会议日期：30 August 2015 through 2 September 2015
来源：IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
摘要：This paper studies a cooperative cognitive radio network (CRN), where the primary system leases the licensed band to the secondary system for a fraction of time in exchange for the secondary user (SU) acting as a decode-and-forward relay. Our aim is to determine the cooperative resource allocation strategy among the primary user (PU) and SU so as to minimize both the total power consumption and the leased time. Considering the delay-sensitive applications in CRN, the proposed policy ensures delay-related quality-of-service (QoS) requirements of both PU and SU. To this end, a multi-objective optimization problem of power and time allocation is formulated based on the effective capacity. Via employing weighting method the optimization problem is transformed to a convex one and solved based on the lagrangian dual method. The proposed policy has been shown to be deterministic functions of delay QoS exponent and channel fading states. In particular, the power allocation is achieved by multi-level QoS based water-filling policy. Moreover, numerical results are provided to demonstrate the performance of the proposed resource allocation policy. © 2015 IEEE.