IDFT, and GI insertion blocks. The PPDU encoding uses the seed value defined in the EDMG-Header-B and has independent flow per user. However, transmitter keeps the common space-time streams numeration over all users. If STBC encoder is applied, then a single spatial stream is mapped to two space-time streams as defined in 30.6.7.1. The space-time streams are further mapped to NSTS NTX transmit chains, where NSTS NTX. ≤ Figure 2: Transmitter block diagram for EDMG portion of MU PPDU transmission. NOTE Interleaver is applied to 16-QAM and 64-QAM modulations only. – 30.6.8 OFDM PPDU transmission Editor: add new subclause 30.6.8, shift the rest of the clauses by one 30.6.8.1 General This subclause defines a waveform for OFDM EDMG PPDU transmission over 2.16 GHz, 4.32 GHz, 6.48 GHz, and 8.64 GHz channel using transmit chains. NTX The spatial mapping methods definition is provided in 30.6.8.2. The EDMG SU PPDU transmission shall be as defined in 30.6.8.3. The EDMG MU PPDU transmission shall be as defined in 30.6.8.4. The frequently used symbol notations in this subclause are summarized in Table 1. Table 1: Frequently used parameters Symbol Explanation Space-time stream number Total number of space-time streams over all users User number Total number of users Transmit number Total number of transmit chains SC chip rate, equal to 1.76 GHz SC chip time duration, equal to 1/Fc OFDM sampling rate equal to GHz NCB×2.64 OFDM sample time duration, equal to 1/Fs Number of contiguous 2.16 GHz channels used for PPDU transmission, 1 4 NCB ≤ ≤ Spatial mapping matrix of size by defined for NTX NSTS, k-th subcarrier Up-sampling parameter 30.6.8.2 Spatial mapping
IDFT, and GI insertion blocks. The PPDU encoding uses the seed value defined in the EDMG-Header-B and has independent flow per user. However, transmitter keeps the common space-time streams numeration over all users. If STBC encoder is applied, then a single spatial stream is mapped to two space-time streams as defined in 30.6.7.1. The NSTS space-time streams are further mapped to NTX transmit chains, where NSTS ≤ NTX. Figure 2: Transmitter block diagram for EDMG portion of MU PPDU transmission. NOTE – Interleaver is applied to 16-QAM and 64-QAM modulations only. 30.6.8 OFDM PPDU transmission Editor: add new subclause 30.6.8, shift the rest of the clauses by one 30.6.8.1 General This subclause defines a waveform for OFDM EDMG PPDU transmission over 2.16 GHz, 4.32 GHz, 6.48 GHz, and 8.64 GHz channel using NTX transmit chains. The spatial mapping methods definition is provided in 30.6.8.2. The EDMG SU PPDU transmission shall be as defined in 30.6.8.3. The EDMG MU PPDU transmission shall be as defined in 30.6.8.4. The frequently used symbol notations in this subclause are summarized in Table 1. Table 1: Frequently used parameters Symbol Explanation Space-time stream number Total number of space-time streams over all users User number Total number of users Transmit number Total number of transmit chains SC chip rate, equal to 1.76 GHz SC chip time duration, equal to 1/Fc OFDM sampling rate equal to NCB×2.64 GHz OFDM sample time duration, equal to 1/Fs Number of contiguous 2.16 GHz channels used for PPDU transmission, 1 ≤ NCB ≤ 4 Spatial mapping matrix of size NTX by NSTS, defined for k-th subcarrier Up-sampling parameter 30.6.8.2 Spatial mapping
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