Creating and sharing knowledge for telecommunications

Characterization of SDR/CR Front-Ends for Improved Digital Signal Processing Algorithms

Ribeiro, D. ; Cruz, P.M. ; Carvalho, N.B.C.

Characterization of SDR/CR Front-Ends for Improved Digital Signal Processing Algorithms, Proc European Signal Processing Conference EUSIPCO, Lisbon, Portugal, Vol. 1, pp. 1 - 4, June, 2014.

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Abstract
This paper will demonstrate the importance of performing unified mixed-signal measurement and characterization procedures. It will be shown that a joint analog and digital analysis has a strong impact on future (radio-frequency) RF components and devices. This is mostly due to the fact that today's circuits and systems are evolving in the way of integration into a single module, which makes the separation of analog and digital analysis impossible to be done.
Some details about mixed-signal instrumentation are introduced by showing representative laboratory measurement arrangements. They allow to obtain correlated information of analog and digital portions of mixed-signal systems, which are essential to retrieve the commonly named transfer functions. This information will make possible to produce better designs of the entire radio front-end, as well as, the implementation of optimized digital signal processing (DSP) algorithms to compensate the analog impairments.