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中文摘要：
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1～2dB的性能改善。
英文摘要：
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 multiple-output system does not add any overhead and produces superior performance （approximately 1 dB to 2 dB） compared to traditional precoding schemes.
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