Title :
Direct waveform synthesis for software radios
Author :
Welborn, Matthev L.
Author_Institution :
Lab. for Comput. Sci., MIT, Cambridge, MA, USA
Abstract :
This work presents results that show how direct digital synthesis (DDS) techniques can be extended to produce frequency modulated (FM) waveforms as well as many types of digitally modulated waveforms, such as PSK or QAM. We show how digitally modulated waveforms can be efficiently synthesized from tables of pre-computed samples. This work also reports on the implementation of these algorithms in a software radio system
Keywords :
digital radio; direct digital synthesis; frequency modulation; phase shift keying; quadrature amplitude modulation; PSK; QAM; algorithms; digitally modulated waveforms; direct digital synthesis; direct waveform synthesis; frequency modulated waveforms; pre-computed samples; software radios; Computer science; Digital modulation; Frequency modulation; Frequency synthesizers; Phase shift keying; Quadrature amplitude modulation; Radiofrequency integrated circuits; Signal generators; Software algorithms; Software radio;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.797817
