Oct. 2022, "The project adopted a baseline text for an Extended Flexible Channel Wavelet physical layer for any media.", IEEE 1901 WG
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P1901c - IEEE Standard for Broadband over Power Line Networks: Medium Access Control and Physical Layer Specifications Amendment 3: Enhanced Flexible Channel Wavelet (FCW) physical and media access control layers for use on any media
This amendment improves the PHY and MAC layers of FCW to be usable for communications on any media. It defines new communication channels in low-frequency bands to extend the communication range and to increase the robustness of communications. This amendment specifies how the FCW PHY/MAC is used for transmission over various media, including underwater communication and near field communication using loop antennas. FCW PHY/MAC coexists with IEEE 1901.1 using existing IEEE 1901-2020 Inter-System Protocol (ISP) and coexists with IEEE 1901.2.
The project adopted Panasonic Holdings' Technology as a baseline specification of IEEE's next-generation communication standard for use on any media. (IEEE 1901 Working Group News)