We are delighted to introduce this special section of the IEEE TRANSACTIONS ON COGNITIVE COMMUNICATIONS AND NETWORKING (TCCN), which aims at exploring recent advances and addressing practical challenges in the applications of machine learning (ML) and artificial intelligence (AI) for physical layer design and optimization. We have received a total number of 36 submissions, and after a rigorous review process, 12 articles have been selected for publication, which are briefly discussed as follows.

中文翻译：

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IEEE TCCN特别部分社论：物理层的机器学习和人工智能

我们很高兴介绍IEEE认知通信和网络事务（TCCN）的这一特殊部分，旨在探讨最新的进展并解决物理层设计中机器学习（ML）和人工智能（AI）应用中的实际挑战和优化。我们总共收到了36份意见书，经过严格的审查过程，我们选择了12篇文章进行发表，简要讨论如下。