The modulator receives the bits from the encryption unit, see GSM 05.0 1 [1], and produces an RF signal. The filtering of the Radio Frequency (RF) signal necessary to obtain the spectral purity is not defined, n either are the tolerances associated with the theoretical filter requi rements specified. These are contained in GSM 05.05 [4].
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Edition: 1 Published: 05/01/1997 Number of Pages: 10 File Size: 1 file , 26 KB