限空间MIMO系统发射功率分配算法研究  

Transmit Power Allocation Algorithm of MIMO System in Confined Areas

作　　者：姚善化[1,2] 吴先良[2] 

机构地区：[1]安徽理工大学电气与信息工程学院,淮南232001 [2]安徽大学计算智能与信号处理教育部重点实验室,合肥230039

出　　处：《系统仿真学报》2011年第6期1109-1112,共4页Journal of System Simulation

基　　金：安徽高校省级科学研究重点项目(KJ2011A077);安徽理工大学博士启动基金项目;2011年度淮南市科技计划资助项目;中国煤炭工业协会科学技术研究指导性计划项目(MTKJ07-153;MTKJ2009-320)

摘　　要：MIMO技术可有效地抵抗矿井巷道中多径衰落现象,但矿井巷道的无线通信设备发射总功率因防爆要求而受到限制。分析了现有的发射功率分配算法,给出一种适用于矿井巷道的总功率受限的发射功率分配算法,能达到最小总平均功率和单根发射天线峰值功率受限条件下的最优功率分配结果。仿真结果表明,在满足目标误码率条件下新算法计算量小,且在单天线功率限制下能减少了系统的总发射功率,提高发射功率的使用效率。The effect of multi-path fading could be resisted in mine laneway by using MIMO technology,but transmittal power of wireless communication equipment must be confined as a result of preventing explosion.A novel power allocation algorithm of confined transmit power was proposed to apply mine laneway based on existing scheme.It could implement transmit average total power minimization and optimal allocation on confined each antenna power.The simulation results show that the computation complexity of new proposed algorithm is reduced under the satisfying target bit error rate as well as total transmit power while limitation of per-antenna peak power,and the transmit efficiency would be increased significantly.

关 键 词：矿井MIMO 注水算法 限定功率 功率分配 拉格朗日算法 

分 类 号：TN929.4[电子电信—通信与信息系统] TD655[电子电信—信息与通信工程]