空时频MIMO信道建模与实现  

Modeling and Implementation of Space-Time-Frequency MIMO Channel

作　　者：孙华丽[1] 孟维晓[1] 张乃通[1] 

机构地区：[1]哈尔滨工业大学通信技术研究所,哈尔滨150001

出　　处：《电子与信息学报》2008年第9期2279-2282,共4页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60572039)资助课题

摘　　要：该文根据角度功率谱、多普勒谱、功率时延谱及收发两端天线的结构,建立了一种多抽头的宽带MIMO信道模型。在建模过程中提出了一种改进的成形滤波器法,通过加入随机相移来消除各条路径的相关性,从而能够更好地仿真出独立的衰落信道。利用Matlab软件,创建了一个无线MIMO信道仿真平台,并针对3GPP标准MIMO信道模型进行了仿真。仿真结果表明用该文方法产生的信道特性与理论结果十分接近,从而验证了改进信道模型能够较好地模拟MIMO系统的空间信道。A multi-tap broadband channel model is established according to Power-Azimuth-Spectrum（PAS）, Doppler-Power-Spectral-Density（DPSD）, Power-Delay-Profile（PDP） and the antenna structures of both transmitter and receiver. An improved shaping-filter method, which can eliminate correlation of different taps by adding a random phase-shift, is proposed to simulate the independent fading channel. A simulation platform of the wireless MIMO channel is proposed using Matlab, then simulate the MIMO channel model based on 3GPP standard. The simulation results show that the obtained channel characteristics are close to the theory results, which proofs the effectiveness of the improved channel model proposed in the paper.

关 键 词：MIMO信道模型 功率时延谱 多普勒谱 角度功率谱 

分 类 号：TN92[电子电信—通信与信息系统]