| 基于非均匀阵列的特征波束发射分集方案 |
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| 引用本文： | 王伟,金荣洪,耿军平,李家强. 基于非均匀阵列的特征波束发射分集方案[J]. 电波科学学报, 2007, 22(2): 239-243,254 |
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| 作者姓名： | 王伟 金荣洪 耿军平 李家强 |
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| 作者单位： | 上海交通大学电子工程系,上海,200240 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金 |
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| 摘 要： | 在发射端将特征波束形成与空时分集技术相结合,在保持分集阶数的同时可以获得阵列增益.通过对该混合系统误码率性能的分析,提出了基于非均匀阵的技术方案.它可以在弱相关信道中保持较高的阵列增益,在强相关环境下使分集支路的平衡度得到改善.仿真结果表明,在相关度不同的多种信道环境中,采用非均匀阵可获得比均匀阵更好的误码率性能.
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| 关 键 词： | 空时分组码 特征波束形成 非均匀阵列 |
| 文章编号： | 1005-0388（2007）02-0239-06 |
| 收稿时间： | 2005-10-20 |
| 修稿时间： | 2005-10-20 |
A hybrid transmit diversity with eigen-beamforming based on Nonuniform Linear Array |
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| WANG Wei,JIN Rong-hong,GENG Jun-ping,LI Jia-qiang. A hybrid transmit diversity with eigen-beamforming based on Nonuniform Linear Array[J]. Chinese Journal of Radio Science, 2007, 22(2): 239-243,254 |
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| Authors: | WANG Wei JIN Rong-hong GENG Jun-ping LI Jia-qiang |
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| Affiliation: | Dept. of electronic Engineering, Shanghai Jiaotong University, wang_w@sjtu, edu. cn, Shanghai 200240, China |
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| Abstract: | The combination of eigen-beamforming with space-time diversity can achieve the same diversity order as well as an additional array gain. In this paper, a nonuniform linear array (NLA) is employed in place of uniform linear array (ULA) to enhance bit error rate (BER) performance of this hybrid system. Compared with ULA, NLA can provide higher array gains in weakly correlated channel and more balanced diversity branches in heavy correlation. Simulation results illustrate the performance improvement under channels of different spatial correlation. |
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| Keywords: | STBC eigen-beamforming nonuniform linear array |
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