CID Clause Page Line Comment Proposed Change Resolution 481 20 Rejecteded. The text in the 11ax draft 2.0 is “TargetRSSI represents the target receive signal averaged over the AP's antenna connectors for the HE TB PPDU.” Because it clearly states “the target receive signal power”, antenna connectors must be receive antenna connectors. So there is no ambiguity. 499 32 The maximum input level at the receiver is in dBm. To be consistent with other clauses in the draft the input "signal" level is implied. Rejected. It is conventional to use “input level” instead of “input signal level”. “maximum input level” has been used in all previous version of IEEE 802.11 specifications. 11170 499 34 Receiver maximum input level is measured at each antenna. Clarify type of antenna port Change "each antenna" to "each receive antenna" Rejected. It is conventional to use “antenna” instead of “receive antenna”. “antenna” has been used in all previous IEEE 802.11 specifications.
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 "input 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”. 11172 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 in doc IEEE 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. Rejected. EVM is a metric for transmit signal quality. So it is not related to actural receivers. The spec. should not put constraints to the design of actual receivers. The note in the 28-45 is just to clarify the measurement of EVM. 11386 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 in doc IEEE 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 Accepted. 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 i_f. Accepted. See resolution for CID 11387 in doc IEEE 802.11-18/0159r2. 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 2┤Θª996-subcarrier 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 802.11-18/0159r2. 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 Accepted. 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 Accepted. Please refer to resolution of CID 11391 in doc IEEE 802.11-18/0159r2.
TGax Editor: Please make the following text change (changed texts are in red) in the line 1, page 494 of D2.0: NSD is the number of data tones of the occupied RU; For the 80+80MHz transmissions, NSD is the total number of data tones of both 80MHz frequency segments. Please also remove the text in the line 6-7, page 494 of D2.0 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. Discussions for CID 11406: TGax Editor: Please make the following text change (changed texts are in red) in the line 39-40, page 492 of D2.0: NOTE—For 1024-QAM, relative constellation error shall be equal to or less than -35 dB when amplitude drift compensation in the test equipment is on and shall be equal to or less than -32 dB when amplitude drift compensation is off in the test equipment. Relative constellation error equal or less than -35dB when amplitude drift compensation is off in the test equipment meets the relative constellation error requirement for 1024-QAM as well. For all other constellations the EVM shall be equal to or less than the values in the table, no matter whether amplitude drift compensation in the test equipment is on or off. Discussions for CID TGax Editor: Please make the following text change (changed texts are in red) for the first paragraph in section 28.3.18.4.3 of D2.0: The relative constellation RMS error in the test, calculated by first averaging over subcarriers, frequency segments, HE PPDUs, and spatial streams (see Equation (28-120)) as described in 28.3.18.4.4 shall not exceed a data-rate dependent value according to Table 28-45 (Allowed relative constellation error versus constellation size and coding rate). The number of spatial streams under test shall be equal to the number of utilized transmitting STA antenna (output) ports and also equal to the number of utilized testing instrumentation input ports. In the test, NSS = NSTS (no STBC) and no beamforming steering matrix shall be used.