SX1276IMLTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SX1276IMLTRT

137 MHz to 1020 MHz Low Power Long Range Transceiver

Semtech Corporation 

SX1276/77/78/79

WIRELESS, SENSING & TIMING

DATASHEET

Channel Activity Detection

The use of a spread spectrum modulation technique presents challenges in determining whether the channel is already in

use by a signal that may be below the noise floor of the receiver. The use of the RSSI in this situation would clearly be

impracticable. To this end the channel activity detector is used to detect the presence of other LoRaTM signals. Figure 11

shows the channel activity detection (CAD) process:

Rev. 4 - March 2015

©2015 Semtech Corporation

Figure 11. LoRaTM CAD Flow

Page 43

www.semtech.com

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