Study of channel state information feedback based on artificial intelligence

Qiuping HUANG; Xiaofeng LIU; Qiubin GAO; Zhengxuan LIU; Liqiang JIN; Shaohui SUN

doi:10.11959/j.issn.1000-0801.2022051

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Study of channel state information feedback based on artificial intelligence

Topic: 5G-Advanced | 更新时间：2024-06-05

- Study of channel state information feedback based on artificial intelligence
- Telecommunications Science Vol. 38, Issue 3, Pages: 74-83(2022)
- 作者机构：
  
  1. 中信科移动通信技术股份有限公司，北京 100083
  2. 无线移动通信国家重点实验室（电信科学技术研究院有限公司），北京 100191
  3. 中国信息通信研究院，北京 100191
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2022051
  CLC： TP393
- Published Online：2022-03，
  
  Published：20 March 2022
- 稿件说明：
移动端阅览
Qiuping HUANG, Xiaofeng LIU, Qiubin GAO, et al. Study of channel state information feedback based on artificial intelligence[J]. Telecommunications science, 2022, 38(3): 74-83.
DOI：

Qiuping HUANG, Xiaofeng LIU, Qiubin GAO, et al. Study of channel state information feedback based on artificial intelligence[J]. Telecommunications science, 2022, 38(3): 74-83. DOI： 10.11959/j.issn.1000-0801.2022051.

摘要

信道状态信息（channel state information，CSI）的精确获取是大规模天线发挥效能的关键。在现有的通信系统中，上下行链路互易性不理想时，基于码本进行下行链路的 CSI 反馈。随着天线规模的增大，码本CSI反馈所需要的开销也越来越大。给出了基于人工智能（artificial intelligence，AI）的CSI反馈压缩方法，分析了基于AI的CSI反馈的标准化影响、通信流程与面临的挑战，提供了评估结果。评估结果表明，相对于基于频域基向量压缩的码本CSI反馈，基于AI的CSI反馈在相同的反馈精度下可以显著地降低反馈开销。

Abstract

Accurate acquisition of CSI (channel state information) is the key to the performance of massive MIMO.In current communication systems

when the reciprocity of uplink and downlink is not ideal

codebook-based CSI feedback is used for downlink CSI acquisition.With the increase of antenna scale

codebook-based CSI feedback needs more and more overhead.The CSI feedback compression method based on AI (artificial intelligence) was presented

and the standardization impact

communication process and challenges of CSI feedback based on AI were analyzed.Besides

evaluation results were provided.The evaluation results show that compared with codebook-based CSI feedback based on frequency domain basis vector compression

CSI feedback based on AI can significantly reduce the feedback cost at the same feedback accuracy.

关键词

Keywords

references

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