Title :
A programmable digital down-converter for SDR receivers
Author :
Qian Yu ; Bao-Yong Chi
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
fDate :
Oct. 29 2012-Nov. 1 2012
Abstract :
A programmable digital down-converter (DDC) for SDR receivers is presented. It can be used in various wireless communication systems, including LTE-Advanced. The DDC converts a digitized complex signal centered at an intermediate frequency (IF) to a baseband complex signal centered at zero frequency. In addition to down conversion, it also decimates the sigma-delta ADC´s output signal from a high sampling rate to a lower one, easing the following signal processing by lowering down the operation speed and improving SNR of the signal.
Keywords :
analogue-digital conversion; convertors; radio receivers; sigma-delta modulation; DDC; IF; LTE-Advanced; SDR receivers; SNR; baseband complex signal; digitized complex signal; intermediate frequency; programmable digital down-converter; sigma-delta ADC; signal processing; wireless communication systems; Band pass filters; Field programmable gate arrays; Finite impulse response filter; IIR filters; Low pass filters; Noise; Receivers; SDR; digital down-converter; multi-rate signal processing;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2012 IEEE 11th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4673-2474-8
DOI :
10.1109/ICSICT.2012.6467915
