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] B Parameter CBW1 Description Number of data subcarriers per OFDM 24 NSD symbol Number of subcarrier per OFDM 2 4 6 8 NSP symbol Total number of useful subcarriers per 26 NST OFDM symbol Highest data subcarrier index per OFDM 13 NSR symbol 31.25 kHz Subcarrier frequency spacing F 32 s = 1/F IDFT/DFT period TDFT 8 s Guard interval duration TGI = TDFT/4 16 s Double guard interval TDGI 4 s Short guard interval duration TSGI = TDFT/8 Duration of OFDM symbol with normal 40 s 1.25 TSYML = TDFT + TGI = TDFT guard interval Duration of OFDM symbol with guard 36 s 1.125 TSYMS = TDFT + TGIS = TDFT interval or depending on the GI TSYML TSYMS OFDM symbol duration TSYM used 160 s 4 = 80 s 2 STF duration TSTF = TSYML TSYML n.a. 40 s MHz long preamble D-STF field duration TDSTF = TSYML ≥2 160 s 4 80 s 2 + = TDFT = TDFT First LTF field duration + 2 + TGI TGI2 TGI2 40 s Second and subsequent LTF field duration TLTFs = TSYML n.a. 40 s MHz long preamble D-LTF field duration = ≥2 240 s 6 80 s 2 SIG field duration TSIG = = TSYML n.a. 80 s 2 MHz long preamble SIGA field duration = TSYML ≥2
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
11-11-1137-14-00ah-specification-framework-for-tgah.docx