IEICE Communications Express (ComEX) is a peer-reviewed open access letter journal covering the entire field of communication. Materials will be freely available for anyone to read, download, or print through this web site. Rapid circulation of publication as well as article quality is deemed important for both contributors and readers (As of 2022, 90% of authors receive notification within 45 days).

IEICE ComEX has been published on IEEE Xplore and J-STAGE as open access articles since the submission date of June 1, 2023 . Before the finalized versions, accepted letters are published online on IEEE Xplore as an advance publication article.