| 一种新的基于码本设计的MIMO系统预编码方法 |
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| 引用本文： | 郝东来,葛建华.一种新的基于码本设计的MIMO系统预编码方法[J].重庆大学学报(自然科学版),2008,31(12):1371-1375. |
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| 作者姓名： | 郝东来 葛建华 |
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| 作者单位： | 西安电子科技大学综合业务网国家重点实验室;西安通信学院电子工程教研室; |
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| 基金项目： | 国家自然科学基金资助项目
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| 摘 要： | 针对多输入多输出系统基于码本的预编码反馈开销与性能的矛盾,提出了一种新的基于码本设计的预编码方案,在传统码本设计中引入分集概念,通过空间分集的增益来改善码本矩阵的性能,并进一步在预编码实现中增加了预编码补偿单元.最后在4×4天线模式下对该算法进行了性能仿真和对比,仿真结果表明,在不增加任何开销的情况下,所提方案较传统的预编码方案大约有1～2 dB的性能改善.
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| 关 键 词： | 多输入多输出 正交频分复用 预编码 分集 码本 |
A new codebook based precoding scheme for multiple input multiple output systems |
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| HAO Dong-lai,GE Jian-hua.A new codebook based precoding scheme for multiple input multiple output systems[J].Journal of Chongqing University(Natural Science Edition),2008,31(12):1371-1375. |
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| Authors: | HAO Dong-lai GE Jian-hua |
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| Institution: | HAO Dong-lai1,2,GE Jian-hua1(1.National Key Laboratory of Integrated Service Networks,Xidian University,Xi\'an 710071,P.R.China,2.Department of Electronic Engineering,Xi\'an Institute of Communication,Xi\'an 710106,P.R.China) |
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| Abstract: | Focusing on the contradiction between overhead and performance in the codebook-based precoding scheme,a precoding method with a new codebook was proposed in which the concept of diversity was adopted in the codebook design.Performance of the codebook matrix was improved by the gain resulting from spatial diversity.Furthermore,a compensation unit for precoding was added in the scheme.The simulation results for the 4 by 4 antenna mode show that the proposed codebook-based precoding scheme for multiple-input m... |
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| Keywords: | multiple-input multiple-output orthogonal frequency division multiplexing precoding diversity codebook |
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