Multiple-Input Multiple-Output (MIMO) systems play a crucial role in fifth-generation (5G) mobile communications, primarily achieved through the utilization of precoding matrix techniques. This paper presents precoding techniques employing codebooks in downlink MIMO-5G wireless communications, aiming to enhance network performance to meet the overarching 5G objectives of increased capacity and reduced latency. We conduct a comparative analysis of various precoding techniques outlined by the 5G standard through diverse simulations across different scenarios. These simulations enable us to assess the performance of the different precoding techniques, ultimately revealing the strengths and weaknesses inherent in Type I and Type II codebooks.

翻译：多输入多输出（MIMO）系统在第五代（5G）移动通信中发挥着至关重要的作用，主要通过预编码矩阵技术的应用来实现。本文提出了在下行链路MIMO-5G无线通信中采用码本的预编码技术，旨在提升网络性能，以满足5G提高容量和降低延迟的总体目标。我们通过对不同场景的多样化仿真，对5G标准中概述的各种预编码技术进行了比较分析。这些仿真使我们能够评估不同预编码技术的性能，最终揭示了Type I和Type II码本固有的优缺点。