Table 2 Difference between LTE-M and NB-IoT

Bandwidth

1.4 MHz

180 KHz

Maximum number of RBs

6 PRBS in DownLink/UpLink

One RB

Downlink physical layer

OFDMA, 15 KHz tone spacing, turbo code, 16QAM, 1 Rx

OFDMA, 15 KHz tone spacing, TBCC, 1 Rx

Uplink physical layer

SC-FDMA, 15 KHz tone spacing, Turbo code, 16QAM

Single tone, 15 KHz and 3.75 KHz spacing

SC-FDMA, 15 KHz tone spacing

Turbo code

Deployment

In Band LTE

In Band, Guard Band LTE and Standalone

Number of Antennas

1

1

Transmit Power (UE)

20 dBm

23 dBm