LTE基本參數

本節將總結了LTE的基本參數:

參數

描述

Frequency range

UMTS FDD bands and TDD bands defined in 36.101(v860) Table 5.5.1, given below

Duplexing

FDD, TDD, half-duplex FDD

Channel coding

Turbo code

Mobility

350 km/h

Channel Bandwidth (MHz)

  • 1.4
  • 3
  • 5
  • 10
  • 15
  • 20

Transmission Bandwidth Configuration NRB: (1 resource block = 180kHz in 1ms TTI )

  • 6
  • 15
  • 25
  • 50
  • 75
  • 100

Modulation Schemes

UL: QPSK, 16QAM, 64QAM(optional)

DL: QPSK, 16QAM, 64QAM

Multiple Access Schemes

UL: SC-FDMA (Single Carrier Frequency Division Multiple Access) supports 50Mbps+ (20MHz spectrum)

DL: OFDM (Orthogonal Frequency Division Multiple Access) supports 100Mbps+ (20MHz spectrum)

Multi-Antenna Technology

UL: Multi-user collaborative MIMO

DL: TxAA, spatial multiplexing, CDD ,max 4x4 array

Peak data rate in LTE

UL: 75Mbps(20MHz bandwidth)

DL: 150Mbps(UE Category 4, 2x2 MIMO, 20MHz bandwidth)

DL: 300Mbps(UE category 5, 4x4 MIMO, 20MHz bandwidth)

MIMO 
(Multiple Input Multiple Output)

UL: 1 x 2, 1 x 4

DL: 2 x 2, 4 x 2, 4 x 4

Coverage

5 - 100km with slight degradation after 30km

QoS

E2E QOS allowing prioritization of different class of service

Latency

End-user latency < 10mS

E-UTRA工作頻段

以下是E-UTRA的工作頻段LTE規格36.101(V860)表 如5.5.1表所示:

E-UTRA Table 5.5.1