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7172 2448.08 20.5 The optional DMG OFDM mode has serious design flaws and has not been productized by any of the 60 GHz silicon vendors to the best of my knowledge. Some of the flaws: (1) DMG OFDM PHY header is transmitted in OFDM, which makes it not decodable to Single Carrier only (SC-only) DMG devices, creating serious co-existence issues. (2) DMG OFDM subcarriers are defined such that when two channels are bonded the subcarriers for the wide channel will not fall on a uniform frequency grid for FFT. It is anticipated that the 11ay standard will define a 60 GHz OFDM mode that will include a single-channel operation, effectively replacing the 11ad OFDM. Remove the DMG OFDM mode and all parameters and references to DMG OFDM mode.
Hewlett Packard Enterprise
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