environments [2] TABLE 12-11 Link-Level Results for Mobility [2] LoS Spectral NLoS Spectral ITU-R Duplex Median Efficiency Efficiency Requirement Environment SINR (dB) (bits/s/Hz) (bits/s/Hz) (bits/s/Hz) InH (10 km/h) UMi (30 km/h) UMa (120 km/h) RMa (350 km/h) InH (10 km/h) UMi (30 km/h) UMa (120 km/h) RMa (350 km/h) 12.9 IEEE 802.16m link-level and system-level performance TABLE 12-12 Detail Calculation of the Peak Spectral Efficiency [2] Parameter TDD Mode FDD Mode Bandwidth (MHz) 2 x 20 = 4 40 FFT Size Cyclic Prefix Ratio Number of Spatial DL: Ns = 4 streams Streams UL: Ns = 2 streams Subframe Types 6 Type-1 (6 Symbols) 5 Type-1 (6 Symbols) 2 Type-2 (7 Symbols) 3 Type-2 (7 Symbols) Number of Physical NPRU = 96 Resource Units Number of Pilots per DL, 4 Streams, Subframe Type-1: 16 DL, 4 Streams, Subframe Type-2: 16 DL, 4 Streams, Subframe Type-3: 16 UL, 2 Streams, Subframe Type-1: 12 UL, 2 Streams, Subframe Type-2: 14 Number of Data Sub- DL, 4 Streams, Type-1: Ndata-T1 = 18 x 6 - 16 = 92 carriers per PRU DL, 4 Streams, Type-2: Ndata-T2 = 18 x 7 - 16 = 110 DL, 4 Streams, Type-3: Ndata-T3 = 18 x 5 - 16 = 74 UL, 2 Streams, Type-1: Ndata-T1 = 18 x 6 - 12 = 96 UL, 2 Streams, Type-2: Ndata-T2 = 18 x 7 - 14 = 112 Downlink Overhead One OFDM Symbol for A-Preamble Symbols One OFDM Symbol for MIMO-Midamble DL:UL Ratio Number of Symbols per DL: 5,7,5,6 DL: 5,7,6,6,7,6,5,7 Subframe UL: 6,6,6,7 UL: 6,7,6,6,7,6,6,7 Number of Subframe Types NSF-T1 = 1, Type-1 NSF-T1 = 3, Type-1 NSF-T1 = 3, Type-1 NSF-T1 = 5, Type-1 Subframes Subframes Subframes Subframes NSF-T2 = 1, Type-2 NSF-T2 = 1, Type-2 NSF-T2 = 3, Type-2 NSF-T2 = 3, Type-2 Subframes Subframe subframes Subframes NSF-T3 = 2, Type-3 NSF-T3 = 2, Type-3 Subframes Subframes Total Number of Data NDATA = NPRU (NSF-T1NData-T1+NSF.- T2 NData-T2 + NSF-T3NData-T3) Sub-carriers per Frame DL: NDATA = 33600=96x(1x92+1x110 DL: NDATA = 72384 = 96x(3x92+3x110 +2x74) +2x74) UL: NDATA = 38400 =96x(3x96+1x112) = UL: NDATA = 78336 = 96x(5x96+3x112) Coding Rate, FECRATE MCS 64QAM, Nb (bits/ s