期刊文献+

云无线接入网络高能效功率分配和波束成形联合优化算法 被引量:1

Energy Efficient Joint Power Allocation and Beamforming for Cloud Radio Access Network
下载PDF
导出
摘要 针对云无线接入网络(C-RAN)的资源分配问题,该文采用max-min公平准则作为优化准则,以C-RAN用户的能量效率作为优化目标函数,在满足最大发射功率和最小传输速率约束条件下,通过最大化最差链路的能量效率来实现用户发射功率和无线远端射频单元(RRHs)波束成形向量的联合优化。上述优化问题属于非线性、分式规划问题,为了方便求解,首先将原优化问题转化为差分形式的优化问题,然后通过引入变量将差分形式的、非平滑优化问题转化为平滑优化问题。最终,提出一种双层迭代功率分配和波束成形算法。在仿真实验中,将该文算法与传统的非能效资源分配算法和能量效率最大化算法进行了比较,实验结果证明该文算法在改进C-RAN能量效率和提高资源分配公平性方面的有效性。 The resource allocation for Cloud Radio Access Network (C-RAN) is investigated. The max-rain fairness criterion is used as the optimization criterion and the Energy Efficiency (EE) of C-RAN users is taken as the optimization objective function, by maximizing the EE of the worst link under the constraints of maximum transmit power and minimum transmit rate, the user transmit power and Remote Radio Heads (RRHs) beamforming vectors are jointly optimized. The above optimization problem belongs to the nonlinear and fractional programming problem. First, the original nonconvex optimization problem is transformed into an equivalent optimization problem in subtractive form. Then, by introducing a new variable, non-smooth equivalent optimization problem is transformed into a smooth optimization problem. Finally, a two-layer iterative power allocation and beamforming algorithm is proposed. The proposed algorithm is compared with traditional non-EE resource allocation algorithm and EE maximization algorithm. The experimental results show that the proposed algorithm is effective in improving the EE and the fairness of resource allocation.
作者 左加阔 杨龙祥 鲍楠 卢官明 ZUO Jiakuo;YANG Longxiang;BAO Nan;LU Guanming(College of Internet of Things,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;College of Telecommunications & Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023 China)
出处 《电子与信息学报》 EI CSCD 北大核心 2018年第12期2979-2985,共7页 Journal of Electronics & Information Technology
基金 江苏省博士后基金(SBH17024) 江苏省高校自然科学基金(15KJB510026) 江苏省自然科学基金(BK20150866) 南京邮电大学引进人才基金(NY215046 NY217056) 国家自然科学基金(61801237 61701255)~~
关键词 云无线接入网络 能量效率 功率分配 波束成形 Cloud Radio Access Network (C-RAN) Energy efficiency Power allocation Beamforming
  • 相关文献

同被引文献5

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部