| 智能天线与空时编码技术的性能分析 |
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| 引用本文： | 王超,廖桂生,张林让,吴顺君. 智能天线与空时编码技术的性能分析[J]. 电波科学学报, 2003, 18(3): 252-255 |
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| 作者姓名： | 王超 廖桂生 张林让 吴顺君 |
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| 作者单位： | 1. 西安电子科技大学,雷达信号处理国家重点实验室,陕西,西安,710071;空军工程大学电讯工程学院,陕西,西安,710077
2. 西安电子科技大学,雷达信号处理国家重点实验室,陕西,西安,710071 |
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| 基金项目： | 国家自然科学基金资助项目 ( 60 172 0 2 8,60 10 2 0 0 5 ) |
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| 摘 要： | 为了研究智能天线自适应波束形成和空时编码技术(等效于MRRC最大比合并分集技术)这两种无线通信系统的关键技术在3G系统中的选择使用或结合使用的可能性及理论依据，比较了它们各自分别在其适用条件下所能达到的对输入信噪比的最优改善性能，得到了从对平均信噪比的改善的广义角度上讲它们是等效和一致的，它们对信噪比的改善都等于做波束形成的阵元数(或相应的分集支路数)的结论．
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| 关 键 词： | 智能天线 空时编码 自适应波束形成 分集技术 3G 第三代移动通信 |
| 文章编号： | 1005-0388(2003)03-0252-04 |
Performance analysis of smart antenna and space-time coding |
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| WANG Chao , LIAO Gui-sheng ZHANG Lin-rang WU Shun-jun. Performance analysis of smart antenna and space-time coding[J]. Chinese Journal of Radio Science, 2003, 18(3): 252-255 |
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| Authors: | WANG Chao LIAO Gui-sheng ZHANG Lin-rang WU Shun-jun |
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| Affiliation: | WANG Chao 1,2 LIAO Gui-sheng 1 ZHANG Lin-rang 1 WU Shun-jun 1 |
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| Abstract: | Smart antenna, also know as adaptive beamforming and diversity as well as space-time coding are several key techniques for wireless communications and they are suitable for the cases of high-correlated and independent signals separately. In this paper, the optimum performance in terms of the improvement of SNR of the adaptive beamforming and MRRC diversity(equivalently space-time coding) are compared, which comes to a conclusion that the two techniques are equivalent in view of the ability of improving the input SNR which just equals to the element number of beamforming array or the number of diversity branches. |
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| Keywords: | smart antenna adaptive beamforming space-time coding diversity |
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