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BF-MIMO系统下行链路容量分析及仿真 被引量：2

Capacity analysis and simulation for downlink transmissions of BF-MIMO system
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摘要 针对波束赋形(BF)和多输入多输出(MIMO)这两种多天线技术的结合问题,提出一种通用的波束赋形—多输入多输出(BF-MIMO)下行链路系统方案,以期有效发挥二者优势,进一步提升信道容量和系统性能。分析了该系统的信号变换形式和处理过程,给出了平坦衰落环境下该系统的组合信道矩阵形式,得到了赋形加权后的系统信道容量闭合表达式。理论分析和仿真结果表明,在相同衰落条件下,BF-MIMO系统能够比常规MIMO系统获得更高的信道容量。 Intended for the combination of BeamForming （BF） and Multiple Input Multiple Output （MIMO）,a generalized wireless transmission scheme named BF-MIMO was presented with a view to bring both advantages into full play and enhance the channel capacity and system performance.According to a series of transformations of the signals in the transmitter and receiver antenna pairs,a combined flat fading channel matrix was analyzed and formulated.Besides,based on the steering vector of transmitter sub-arrays,the closed-form expression of the channel capacity was also given.Finally,the capacity enhancement of the proposed scheme over traditional MIMO systems was demonstrated and verified by simulation results.
作者 郭建新 曹小敏 张辉 霍文俊
机构地区 空军工程大学电讯工程学院 空军北京模拟训练中心 空军工程大学科研部
出处 《计算机应用》 CSCD 北大核心 2010年第5期1179-1182,共4页 journal of Computer Applications
基金 国家自然科学基金资助项目(60601016) 陕西省自然科学基金资助项目(SJ08F11)
关键词 波束赋形 多入多出 空间复用 空间分集 平坦衰落 信道状态信息 BeamFoming （BF） Multiple Input Multiple Output （MIMO） Space Multiplexing （SM） Space Diversity （SD） flat fading Channel State Information （CSI）
分类号 TP393.07 [自动化与计算机技术—计算机应用技术]
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参考文献11

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二级参考文献19

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共引文献9

同被引文献20

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计算机应用
2010年 第5期

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