DSP digital modulation software implementation and RF impairments analysis

Author

Villarruel, J. E Gonzalez ; Gómez, D. Santana ; Orozco-Lugo, Aldo G.

Author_Institution

Dept. of Electr. Eng., ITESM-CEM, Mexico City, Mexico

fYear

2005

fDate

7-9 Sept. 2005

Firstpage

122

Lastpage

126

Abstract

Thanks to digital signal processors (DSPs) and wireless technologies, software modem radios for the 2G and 2.5G have already been implemented (Reed, 2002). In a software radio, we aim to combine several wireless communications protocols and reduce the radio frequency (RF) processing stages. Mapping digital signals to different wireless channels or protocols combined to advanced RF transceivers are fundamental functions in a SW radio. In this paper, we propose a DSP based GFSK software modem implementation using a look-up table and describe the inherent impairments due to the RF stages.

Keywords

demodulation; digital signal processing chips; frequency shift keying; modems; protocols; radiofrequency integrated circuits; software radio; table lookup; DSP digital modulation software; GFSK software modem; RF impairments analysis; RF transceivers; digital signal processors; look-up tables; software modem radios; software radio; wireless channels; wireless communications protocols; wireless technologies; Digital modulation; Digital signal processing; Digital signal processors; Modems; RF signals; Radio frequency; Signal mapping; Software radio; Wireless application protocol; Wireless communication; DSP; GFSK; RF impairments; Software Radio;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Electronics Engineering, 2005 2nd International Conference on

Print_ISBN

0-7803-9230-2

Type

conf

DOI

10.1109/ICEEE.2005.1529588

Filename

1529588