A programmable DSP front-end for all-digital 4G transmitters

This paper presents a digital interpolation chain for non-integer large-ratio sampling rate conversion, targeted to 4G applications. Such a system is needed in all-digital transmitters, where the sampling rate of the digital input to the RF front-end must be an exact submultiple of the carrier frequ...

Full description

Saved in:
Bibliographic Details
Published in2013 IEEE 11th International New Circuits and Systems Conference (NEWCAS) pp. 1 - 4
Main Authors Roverato, Enrico, Kosunen, Marko, Lemberg, Jerry, Stadius, Kari, Ryynanen, Jussi, Eloranta, Petri, Kaunisto, Risto, Parssinen, Aarno
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2013
Subjects
Attenuation
Bandwidth
Digital signal processing
Interpolation
Noise
Radio frequency
Radio transmitters
Online AccessGet full text

Cover

More Information
Summary:This paper presents a digital interpolation chain for non-integer large-ratio sampling rate conversion, targeted to 4G applications. Such a system is needed in all-digital transmitters, where the sampling rate of the digital input to the RF front-end must be an exact submultiple of the carrier frequency. A highly flexible architecture is proposed to reduce system complexity when the RF requirements are more relaxed. The presented interpolation chain has been especially optimized by taking into account the requirements for LTE and LTE-A, but it can be used in multistandard applications as well. The system achieves excellent ACLR of 83 dB, EVM degradation of 0.03%, and RX-band noise below -160 dBc/Hz.
ISBN:9781479906185
1479906182
DOI:10.1109/NEWCAS.2013.6573634