IEEE 802.11ay, which is also called EDMG (Enhanced Directional Multi-Gigabit in IEEE 802.11 standard), is the follow-up of 802.11ad standard with four times more bandwidth and additional MIMO up to 4 streams. It is a standard that is still being developed with the peak transmission rate equal to 20 Gbit/s. The main extensions include:
Channel bonding (Bandwidth of 2x2.16GHz, 3x2.16GHz and 4x2.16GHz, Contiguous and non-contiguous channel aggregation)
MIMO and Beam forming
Higher modulation schemes (up to 64-point non-uniform constellation)
LDPC encoding is applied to EDMG SC mode with two types of block size equal to 624 or 672 bits (short codeword) and 1344 bits (long codeword). The table below displays the EDMG-MCS schemes for a SC mode PPDU. MCS 0 is used to identify the EDMG control mode.
The figure below shows the EDMG PPDU format with all the possible fields, but each field is not transmitted in an EDMG PPDU. The transmission of fields depends on whether the PPDU is a SU PPDU, a MU PPDU, or A-PPDU.
