A NONLINEAR OPTIMIZED POWER CONTROL ALGORITHM FOR MULTIUSER COGNITIVE NETWORKS

摘要：

This paper presents the concepts of centralizing spectrum sharing scheme for cellular networks. We consider the scenario where the cognitive radio network is formed by secondary users with low power personal/portable devices and when both systems are operating simultaneously based on cochannel spectrum sharing. The goal of this paper is to study how to maximize the utilities of the cognitive network given certain interference limits to ensure QoS requirements of primary users. The power optimization problem is formulated as a nonlinear and convex problem. Then a Reduced Gradient Method (RGM) is implemented to solve this problem and find the answer. Our work provides a theoretical analysis on the power control performance that motivates further research on designing more practical transmission schemes in future cognitive networks.

关键词： cognitive networks power control nonlinear optimized

作者: Hao Junwei Zu Yunxiao

作者单位: School of Electronic Engineering Beijing University of Posts and Telecommunications, Beijing,China

会议类型: 国际会议

会议名称: 2009 IEEE International Conference on Network Infrastructure and Digital Content(2009年IEEE网络基础设施与数字内容国际会议 IEEE IC-NIDC2009)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2009-11-06（万方平台首次上网日期，不代表论文的发表时间）