Software embedded implementation of real time non uniform sampling filter

The use of digital filters is widely spread in the field of radio receivers. In literature, there is no practical realization of digital filters for non uniformly sampled data in the radio communication context. In this paper we are interested on real time filtering of non uniformly sampled signals using a Blackfin 533 Digital Signal Processor (DSP) as embedded software target. The filtering stage is not preceded by a reconstruction algorithm. As input, the filter requires signal samples and their corresponding non uniform sampling sequence. Obtained filtered data, are analyzed using specific spectrum analysis method based on zero padding and Fast Fourier Transform (FFT).