A power allocation scheme for multi-user multiple-input multiple-output orthogonal frequency division multiplexing （MI- MO-OFDM） systems with channel state information （CSI） on transmitter and receiver is pressed....A power allocation scheme for multi-user multiple-input multiple-output orthogonal frequency division multiplexing （MI- MO-OFDM） systems with channel state information （CSI） on transmitter and receiver is pressed. Multi-user lower allocation can be decoupled into single user lower allocation throughout null space mapping of multi-user channel and lower allocation can be performed throughout spatial-spectral water-filling for per user.To deal with more users in system and fading correlation,scheduling is oerformed to maintain the gain of power allocation.The proposed scheme can substantially improve system＇s spectral efficiency with low complexity.Simulation results validate the accuracy of theoretic analyses.展开更多
为了提高电力企业科研信息管理效率,本研究基于B/S结构设计了电力企业科研信息管理系统,在Windows 2007环境中开发,设计的系统包括用户管理模块、登录管理模块、科研信息查询模块、科研项目成果管理模块、科技项目管理模块,科研项目数...为了提高电力企业科研信息管理效率,本研究基于B/S结构设计了电力企业科研信息管理系统,在Windows 2007环境中开发,设计的系统包括用户管理模块、登录管理模块、科研信息查询模块、科研项目成果管理模块、科技项目管理模块,科研项目数据存储在SQL Server 2008数据库中,重点分析了系统的模块功能及数据访问的实现,该系统的应用简化了科研项目的管理环节,对电力企业的信息化管理有一定的借鉴作用。展开更多
基金This project was supported bythe National Natural Science Foundation of China (60272079) the National High Technol-ogy Research and Development Plan Project of China (2001AA123014) .
文摘A power allocation scheme for multi-user multiple-input multiple-output orthogonal frequency division multiplexing （MI- MO-OFDM） systems with channel state information （CSI） on transmitter and receiver is pressed. Multi-user lower allocation can be decoupled into single user lower allocation throughout null space mapping of multi-user channel and lower allocation can be performed throughout spatial-spectral water-filling for per user.To deal with more users in system and fading correlation,scheduling is oerformed to maintain the gain of power allocation.The proposed scheme can substantially improve system＇s spectral efficiency with low complexity.Simulation results validate the accuracy of theoretic analyses.
文摘为了提高电力企业科研信息管理效率,本研究基于B/S结构设计了电力企业科研信息管理系统,在Windows 2007环境中开发,设计的系统包括用户管理模块、登录管理模块、科研信息查询模块、科研项目成果管理模块、科技项目管理模块,科研项目数据存储在SQL Server 2008数据库中,重点分析了系统的模块功能及数据访问的实现,该系统的应用简化了科研项目的管理环节,对电力企业的信息化管理有一定的借鉴作用。
