Joint Bandwidth and Power Allocations for Cognitive Radio Networks with Imperfect Spectrum Sensing
Joint Bandwidth and Power Allocations for Cognitive Radio Networks with Imperfect Spectrum Sensing
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DOI：
10.1007/s11277-010-0004-x
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发表时间：
2011-03
影响因子：
2.2
通讯作者：
Yuan Wu;D. Tsang
中科院分区：
文献类型：
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作者：
Yuan Wu;D. Tsang
在本文中，我们研究了联合带宽和功率分配的认知无线电网络（CRN），机会主义地运行在一组未使用的多个主用户（PU）网络的信道。我们的目标是最大限度地减少所有共存的次要用户（SU）的总功率分配，并保证他们的服务质量（QoS）的要求。我们考虑CRN的不完善的频谱感知，并采用干扰约束（在上行链路的干扰约束PU基站），以解决PU的保护时，发生误检测。我们提出了一个有效的联合分配算法来解决我们的问题，并通过足够的数值实验证明其性能。
In this paper we study the joint bandwidth and power allocations for Cognitive Radio Networks (CRNs), which opportunistically operate on a set of channels unused by multiple Primary User (PU) Networks. Our objective is to minimize the total power allocation of all coexisting Secondary Users (SUs) and guarantee their Quality of Service (QoS) requirements. We consider the imperfect spectrum sensing of CRNs and adopt the interference constraint (in terms of the uplink interference constraint to PU Base Stations) to address PUs’ protection when miss-detection happens. We propose an efficient joint allocation algorithm to solve our problem and demonstrate its performance through sufficient numerical experiments.