Title :
Test setup and spurious replicas identification in time-quantized pseudorandom sampling-based ADC in SDR multistandard receiver
Author :
Ben-Romdhane, Manel ; Maalej, Asma ; Lahouli, Rihab ; Rebai, Chiheb
Author_Institution :
CIRTA´´COM Res. Lab., Univ. of Carthage, El Ghazala, Tunisia
Abstract :
Software defined radio (SDR) multistandard receiver is an enabling technology for radio evolution. The time-quantized pseudorandom sampling (TQ-PRS) is an advantageous processing for SDR multistandard receiver design. The TQ-PRS allows aliases attenuation leading to a relaxed receiver baseband stage. In this paper, the authors focus on experimental proof of concept of the TQ-PRS-based analog-to-digital converter (ADC). The spectrum analysis of the test results shows spurious replicas which are not present in simulation results. The presented investigations show that the spurious replicas are coming from a pseudorandom delay with the same periodicity as TQ-PRS clock. A solution based on sharing receiver channel selection filter for spurious attenuation is proposed.
Keywords :
analogue-digital conversion; filtering theory; radio receivers; sampling methods; software radio; spectral analysis; wireless channels; ADC; SDR multistandard receiver; TQ-PRS; TQ-PRS clock; analog-to-digital converter; pseudorandom delay; radio evolution technology; receiver channel selection filter; relaxed receiver baseband stage; software defined radio multistandard receiver; spectrum analysis; spurious attenuation; spurious replica identification; time-quantized pseudorandom sampling; 3G mobile communication; Attenuation; Baseband; Delay; Receivers; Simulation; Spectral analysis; analog-to-digital converter; multistandard receiver; software defined radio; time-quantized pseudorandom sampling;
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2011 18th IEEE International Conference on
Conference_Location :
Beirut
Print_ISBN :
978-1-4577-1845-8
Electronic_ISBN :
978-1-4577-1844-1
DOI :
10.1109/ICECS.2011.6122243