Dual Waterfilling Power Allocation Algorithm in MIMO Systems

摘要：

Aiming at the problem of resource allocation in multiuser multi-input multi-output (MIMO) systems, a new power allocation algorithm based on dual waterfilling is proposed. Block diagonalization is adopted to cancel the inter-user interference, and then the complete diagonalization method is employed to derive the spatial sub-channels for each user. The overall power of the system is divided among users based on each users large scale fading; then the power of each user is further allocated to its spatial sub-channels based on the small scale fading. Simulation results show that compared with the existing resource allocation strategies, the proposed algorithm can provide more ergodic capacity for multi-user MIMO systems. When the total transmit power is 100w, it has 15％ capacity advantage over the traditional waterfilling method.

关键词： waterfilling resource allocation ergodic capacity

作者: Mei Rong Shi-Hua Zhu Feng Li

作者单位: School of Electronics and Information EngineeringXi’an Jiaotong UniversityXi’an 710049 China School of Electronics and Information Engineering Xi’an Jiaotong University Xi’an 710049 China

会议类型: 国际会议

会议名称: 第一届软件无线电技术研讨会(ist International Software Ridio Technology Workshop)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2008-10-16（万方平台首次上网日期，不代表论文的发表时间）