基于IMT-Advanced信道模型的室内MIMO性能研究  

Performance investigation of indoor MIMO based on IMT-Advanced channel model

作　　者：温林海[1] 张祖凡[1,2] 蒙玎[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《计算机应用研究》2011年第10期3869-3870,3874,共3页Application Research of Computers

基　　金：重庆市科技攻关计划资助项目(CSTC;2010AC2143);国家教育部"春晖计划"合作科研项目(Z2009-1-63017)

摘　　要：LTE-Advanced与多输入多输出(MIMO)技术的结合极大地改善了MIMO在不同信道环境下的传输质量和可靠性。为此,在基于IMT-Advanced几何分布统计信道模型基础上,建立LTE-Advanced通信系统的MIMO信道模型,深入研究室内多天线系统的性能。针对MIMO发射分集技术,研究在瑞利衰落信道下不同调制技术对系统误码率(BER)性能的影响,并通过理论验证仿真结果的可行性,进而在非视距(NLOS)情况下,结合不同载波频率的路径损耗,理论分析不同载波频率对系统误码率性能的影响。仿真结果表明,IMT-Advanced室内信道模型只适用于8 GHz以下的低载波频段通信。LTE-Advanced combined with MIMO technology greatly improve the transmitting quality and reliability in different channel environment.Thus,this paper set up MIMO channel model in LTE-Advanced system,which was based on statistical channel model of geometric distribution in IMT-Advanced system,and studied symbol error rate（BER）performance of indoor multi-antenna system.According to the technology of MIMO transmitting diversity,discussed the different modulations influence of the BER in Rayleigh fading channel,and verified the feasibility of simulation results by theoretical analysis.Then,analyzed the BER of path loss of the different carrier frequencies in the NLOS.The simulation results show that the IMT-Advanced indoor channel model can perform the feat obviously when the low carrier frequency is less than 8 GHz.

关 键 词：多输入多输出 IMT-Advanced信道模型 调制技术 载波频率 

分 类 号：TN92[电子电信—通信与信息系统]