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天线间隔对室内非视距MIMO信道容量的影响 被引量：2

Antenna spacing effect on the capacity of indoor NLOS MIMO channels
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摘要 采用2维射线跟踪法分析了天线间隔对非视距室内环境中MIMO系统容量ccdfs的影响。结果表明,天线间隔对MIMO系统容量影响非常显著,而且天线数目不同,天线间隔对MIMO系统容量影响不同。天线间隔越大,系统容量越接近Telatar所预测的MIMO系统容量;但随着天线间隔的减小,系统容量则会显著降低。对于相同天线间隔的多天线系统,随着天线数目的增加,系统所能实现的独立同分布瑞利信道容量的百分比越低。 A 2-D ray-tracing method is used to analyze antenna spacing effect on the indoor NLOS MIMO channel capacity ccdfs. The results have shown that in indoor NLOS environment antenna spacing affects MIMO ccdfs greatly and there is different effect on MIMO ccdfs with the different antenna numbers when the MIMO system has the same antenna spacing. The larger antenna spacing, the less difference between ray-tracing ccdfs and the MIMO ccdfs predicted by Telatar exists. With the decrease of antenna spacing, capacity decreases obviously. And for the MIMO system with the same antenna spacing the more antennas, the less percentage of i.i.d, rayleigh MIMO channel capacity is obtained.
作者 吕剑刚 吕英华 车树良 张洪欣
机构地区 中国农业大学信息与电气工程学院 北京邮电大学通信网络综合技术研究所
出处 《电路与系统学报》 CSCD 北大核心 2007年第6期38-41,37,共5页 Journal of Circuits and Systems
基金 国家自然科学基金资助项目(6027101860331010)
关键词 多入多出 天线间隔 非视距 射线跟踪法 容量ccdfs Multiple-input multiple-output （MIMO） antenna spacing non-line-of-sight （NLOS） ray-tracing capacity complementary cumulative distribution functions （ccdfs）
分类号 TN92 [电子电信—通信与信息系统]
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参考文献15

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二级参考文献12

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共引文献6

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电路与系统学报
2007年 第6期

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