Cross-layer Resource Allocation for the Downlink of SDMA Systems

摘要：

In this paper, we study the resource allocation problem for the downlink of spatial-division multiple-access (SDMA) systems. We develop a general architecture to determine the optimal subset of users and their transmission rates. The constraints posed by the physical layer (in terms of spatial orthogonality) and by the link layer (in terms of QoS requirements) are jointly taken into consideration. As an implementation case, we propose efficient algorithms for systems that employ zeroforcing beamforming. Extensive simulations and analysis are performed to demonstrate the effectiveness of our proposal.

关键词： beamforming cross-layer resource allocation

作者: Song Xinghua Wang Xiaoxiang Wu Weiling

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

会议类型: 国际会议

会议名称: 首届无线通信跨层设计国际学术研讨会(1st International Workshop on Cross Layer Design)

会议地点: 济南

会议语种:英文

页码: 1-4

在线出版日期: 2007-09-20（万方平台首次上网日期，不代表论文的发表时间）