11171 496 31 Input levels are measured at the antenna connectors as receive antennas. Input levels referenced in other clauses state "input signal levels". The use of "input signal levels" should be consistent throughout the draft. Also describe is a cable connection of transmitting STA (output) ports to input ports of a Device Under Test. Input ports are (receiving) antennas when configured as such and should be clarified in the text. Change levels" to "input signal levels” Change "Device Under Test" to "Device Under Test receiver." Rejected. Since the whole clause is about “receiver specification”, there is no ambiguity to use “Device under test”. 481 43 DLRSSI represents the measured received power from the non-HE portion of the HE PPDU. The received power is measured in dBm. It should state as such. Change "received power" to "received power in dBm" Revised. 11ax editor, please see the discussion for instructions for CID 11172 in doc IEEE 802.11-18/0159r3. 11176 491 37 The Note in Table 492 lines 37-40) regarding amplitude drift compensation is ambiguous. The note implies that amplitude drift compensation is only used in test equipment, and that it is not a requirement in actual receivers. In fact, if it is allowed in test equipment, it must necessarily be a feature in the receiver as well. More clarification and discussion are required. Rejvised. Please refer to the resolution of CID 13406. 491 11 To be ailgned with previous amendments, change the clock and center frequency accuracy maximum tolerance to be +/-20ppm for 5GHz, +/- 25ppm for 2.4GHz band as in the comment Revise. 11ax editor, please see the discussion for instructions of CID 11386 in doc IEEE 802.11-18/0159r3. 3
11387 493 54 i_f =1 is missing from the bottom of the outmost summation (sum over i_f from 1 to Nf) as in the comment Revised. 11ax editor, please add if=1 at the bottom of the outmost summation. 14128 493 54 "i_f =1" of index of summation and its first value is missing in Equation (28-120) add i_f=1 in Equation (28-120) to indicate frame i_f. Revised. Please refer to the resolution of CID 11387. 11388 494 6 "NOTE 1--In the case the transmit modulation accuracy test is performed simultaneously for the two frequency segments of the 80+80 MHz transmissions with RU." Not a complete sentence Add "NSD in Equation (28-120) represents the total number of subcarriers of both 80 MHz frequency segments. Revised. 11ax editor, please see the discussion for instructions of CID 11388 in doc IEEE 802.11-18/0159r3. 494 20 Remove "except that for noncontiguous transmissions, only the frequency segment with occupied subcarriers is tested." TB PPDU support noncontiguous transmission. as in the comment Rejected. Noncontiguous transmission is for TB PPDU in 80+80MHz cases. 11391 495 In Eq 122, Ps should be normalized by N_SD instead of N_ST as in the comment Revised. 11ax editor, please change NST to NSD in equaltion (28-122). 14129 495 3 "N_ST" needs to be replaced with "N_SD" in Equation (28-122) as in comment Revised. Please refer to the resolution of CID 11391
13406 492 37 the note for 1024QAM at the bottom of 28-45 is not clear add to the NOTE after the words '1024 QAM' : "either, relative constellation error shall be equal to or less than -35 dB when amplitude drift compensation in the test equipment is off, or;" Revised. The orginal note already implies the case that “relative constellation error equal to or less than dB when amplitude drift compensation in the test equipment is off meet the EVM reqirement for as well.” because relative constellation error can not be increased when amplitude drift compensation s on. One more sentence is added to make it more clear, Please refer to resolution of CID 11406 in doc IEEE 802.11-18/0159r3. 491 45 "... In the test, NSS=NSTS (no STBC) shall be used". How about beamforming? Nowadays all the actual EVM measurements shall disable beamforming, due to test equipments' limitations. Add "and no beamforming shall be used" after the quoted sentence Revised. 11ax editor, please see the discussion for instructions for CID 11896 in doc IEEE 802.11-18/0159r3. Discussions for CID TGax Editor: Please make the following text change (changed texts are in red) in the line 44, page 481 of D2.0: DLRSSI in dBm is an average of the received power over the antennas on which the average PLDL is being computed. Discussions for CID TGax Editor: Please make the following text change (changed texts are in red) in the line 9-10, page 491 of D2.0: The symbol clock frequency and transmit center frequency maximum tolerance shall be ±20 ppm in 5GHz and ±25 ppm in 2.4GHz. Discussions for CID 11388: