Title :
Waveform shaping for GSM systems
Author :
Baggini, B. ; Caiulo, G. ; Maloberti, F.
Author_Institution :
Italtel Soc. Italiana Telecommun. SpA, Milan, Italy
Abstract :
This paper describes a new integrated topology circuit for a waveform shaper which will be used inside a GSM system. The circuit generates a raised cosine shape output for the ramp up and ramp down of a transmitted burst. The circuit was realised using two 8-bit current-steering digital-to-analog converters. The measured results of the transient spectrum and the power level versus time show that the circuit fully meets GSM specifications
Keywords :
CMOS integrated circuits; digital-analogue conversion; land mobile radio; mixed analogue-digital integrated circuits; waveform generators; 8 bit; GSM specifications; GSM systems application; current-steering DAC; digital-to-analog converters; integrated topology circuit; raised cosine shape output; waveform shaper; Character generation; Circuits; Decoding; Delay; GSM; Matrix converters; Phase modulation; Radio frequency; Shape; Transfer functions;
Conference_Titel :
Circuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2972-4
DOI :
10.1109/MWSCAS.1995.510192
