We want to present a CUDA based RF-receiver for a 1,5 T MRI consisting of an inverse quadrature modulation and the decimation step. We compared different decimation techniques based on a moving average, a CIC and an FIR filter. The filters were compared regarding their noise attenuation, their processing effort and their group delays. We conclude that the CIC filter is the optimal filter for our usage, because this filter provides the best compromise between noise attenuation and processing effort.
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