ETSI - TS 145 004
Digital cellular telecommunications system (Phase 2+) (GSM); GSM/EDGE Modulation
|Publication Date:||1 November 2020|
The modulator receives the bits from the encryption unit, see 3GPP TS 45.001, and produces an RF signal. The filtering of the Radio Frequency (RF) signal necessary to obtain the spectral purity is not defined, neither are the tolerances associated with the theoretical filter requirements specified. These are contained in 3GPP TS 45.005.