SIG 2 symbols, each modulated using Q-BPSK, same as in 11n green field preamble. 48 data tones occupying tones {-26:26} within each 2MHz subband, and modulated using 11n/11ac MCS0. [12/308r2, Motion1] Data tones are mapped to multiple space-time streams using the first column of P matrix—the same as in 11n GF preamble. The following CSD table (to be applied Per-Per-Space-Time-Stream) shall be used for the >=2MHz Short Frame format [2012 July meeting minutes, 11-12/833r1: motion1, 2] T_cs(n) for >=2MHz, Short Frame Format and Data portion of Long Frame Format number of streams Cyclic shift (for Tx Stream n) (μs) 1 2 3 4 1 0 - - - 2 0 -4 - - 3 0 -4 -2 - 4 0 -4 -2 -6 R.3.2.1.1.B: The long preamble structure uses a “mixed-mode” format shown below: (long preamble) This frame format can be used for MU and SUBF [12/373r0] Omni Portion SIGA field has 48 data tones, occupying tones {-26:26} as in 11n/11ac SIG fields [12/597r0-motion1] STF/LTF1/SIG fields applies single stream in each subcarrier (without the 1st column P matrix mapping as seen in preamble), similar to the legacy portion of 11n MM preamble and 11ac preamble. SIG subfield definition is different from short preamble, and the two symbols in SIG field are modulated using QBPSK and BPSK respectively Refer to R.3.2.1.1.C. The following CSD table (to be applied Per-Antenna) shall be used for the >=2MHz Omni portion of the Long Frame format [2012 July meeting minutes, 11-12/833r1:motion1,3]: T_cs(n) for >=2MHz, Omni Portion of Long Frame Format Cyclic shift (for Tx Antenna n) (μs) time
3.2.5 S1G PMD receiver specification 3.2.5.1 Receiver minimum input sensitivity R.3.2.5.1.A: The packet error rate (PER) shall be less than 10% for a PSDU length of 256 octets with rate-dependent input levels TBD. [Nov 2012 meeting minutes, 11-12/1326r0] R.3.2.5.1.B: The specification shall define the receiver minimum input level sensitivity as below: [13/0061r0] Modulation Rate (R) Minimum Sensitivity (1MHz PPDU) (dBm) Minimum Sensitivity (2MHz PPDU) (dBm) Minimum Sensitivity (4MHz PPDU) (dBm) Minimum Sensitivity (8MHz PPDU) (dBm) Minimum Sensitivity (16MHz PPDU) (dBm) BPSK 1/2 & 2x repetition -98 n.a. n.a. n.a. n.a. BPSK 1/2 -95 -92 -89 -86 -83 QPSK 1/2 -92 -89 -86 -83 -80 QPSK 3/4 -90 -87 -84 -81 -78 16-QAM 1/2 -87 -84 -81 -78 -75 16-QAM 3/4 -83 -80 -77 -74 -71 64-QAM 2/3 -79 -76 -73 -70 -67 64-QAM 3/4 -78 -75 -72 -69 -66 64-QAM 5/6 -77 -74 -71 -68 -65 256-QAM 3/4 -72 -69 -66 -63 -60 256-QAM 5/6 -70 -67 -64 -61 -58 3.2.6 Data field 3.2.6.1 SERVICE R.3.2.6.1.A: The draft specification shall define the11ah SERVICE field as follows: [13/0062r0] The SERVICE field has 8 bits, in which first 7 bits are used for the scrambler seed, and the remaining 1 bit reserved.
3.8 Timing-Related Constants R.3.8.A: The draft specification shall include the following timing-related constants: [Nov 2012 meeting minutes, 11-12/1363r1] Parameter CBW1 Description NSD 24 Number of data subcarriers per OFDM symbol NSP 2 4 6 8 Number of subcarrier per OFDM symbol NST 26 Total number of useful subcarriers per OFDM symbol NSR 13 Highest data subcarrier index per OFDM symbol F 31.25 kHz Subcarrier frequency spacing TDFT 32 s = 1/F IDFT/DFT period TGI 8 s = TDFT/4 Guard interval duration TDGI 16 s Double guard interval TSGI 4 s = TDFT/8 Short guard interval duration TSYML 40 s = TDFT + TGI = 1.25 TDFT Duration of OFDM symbol with normal guard interval TSYMS 36 s = TDFT + TGIS = 1.125 TDFT Duration of OFDM symbol with guard interval TSYM TSYML or TSYMS depending on the GI used OFDM symbol duration TSTF 160 s = 4 TSYML 80 s = 2 TSYML STF duration TDSTF n.a. 40 s = TSYML ≥2 MHz long preamble D-STF field duration 160 s = 4 TDFT + 2 TGI + TGI2 80 s = 2 TDFT + TGI2 First LTF field duration TLTFs 40 s = TSYML Second and subsequent LTF field duration n.a. 40 s = ≥2 MHz long preamble D-LTF field duration TSIG 240 s = 6 80 s = 2 TSYML SIG field duration n.a. 80 s = 2 TSYML ≥2 MHz long preamble SIGA field duration B