LTE 空中接口技术与性能_物理层概述

LTE 空中接口技术与性能 物理层概述 > Maximum channel rate > 14 OFDM symbols per 1ms > 100 RB * 12 sc = 1200 IQ symbols > 20MHz: 14*1200 = 16.8Msps > SISO 64QAM(6 bit/per symbol): 16.8*6 = 100.8Mbps > 2*2 MIMO 64QAM: 2*100.8 = 201.6Mbps > 4*4 MIMO 64QAM: 4*100.8 = 403.2Mbps > Overhead: control information, common singling, coding and header overhead, guard, etc so the maximum payload rate to a single user is considerably lower > Simulations in 3 km/h and siteto- site distance 500 m indicates 173 Mbps (2x2 MIMO) and 32 6 Mbps (4x4 MIMO) in the downlink