Title :
2-channel Time-Interleaved ADC frequency response mismatch correction using adaptive I/Q signal processing
Author :
Singh, Sushil ; Epp, Michael ; Vallant, Georg ; Valkama, Mikko ; Anttila, Lauri
Author_Institution :
Cassidian, Ulm, Germany
Abstract :
A novel adaptive compensation architecture for the frequency response mismatch of 2-channel Time-Interleaved ADC (TI-ADC) is proposed for developing high-yield self-adaptive systems. The proposed approach overcomes the existing methods in the sense that the TI-ADC mismatch identification can be performed without allocating a region where only the TI-ADC mismatch spurs are present. This is accomplished via mapping the TI-ADC problem into an I/Q mismatch problem which allows deploying complex statistical signal processing. As proof of the concept, the compensation architecture is demonstrated and tested on RF-sampling TI-ADC hardware data.
Keywords :
adaptive signal processing; analogue-digital conversion; statistical analysis; 2-channel time-interleaved ADC; adaptive I/Q signal processing; adaptive compensation architecture; analogue-to-digital converter; frequency response mismatch correction; high-yield self-adaptive systems; statistical signal processing;
Conference_Titel :
Circuits and Systems (MWSCAS), 2013 IEEE 56th International Midwest Symposium on
Conference_Location :
Columbus, OH
DOI :
10.1109/MWSCAS.2013.6674840