3335

Digital beamforming using a GPU

Carl-Inge Colombo Nilsen, Ines Hafizovic
Department of Informatics, University of Oslo, Norway
IEEE International Conference on Acoustics Speech and Signal Processing (2009) (2009) Publisher: Ieee, Pages: 609-612

@article{nilsen2009digital,

   title={Digital beamforming using a GPU},

   author={Nilsen, C.I.C. and Hafizovic, I.},

   year={2009},

   publisher={IEEE}

}

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In this paper we investigate the use of GPUs as digital beamformers. We specify a parallel implementation of a beamformer in time and frequency domain and measure its performance. We also give examples of the processing limits of NVIDIA Geforce 8800 GPU with respect to application parameters: number of sensors, sampling frequency, bandwidth, and number of simultaneous beams. The results are compared to those of algorithms similarly implemented on a Intel Xeon CPU. We find that the GPU is able to process a larger amount of information than the CPU, and that it can be used as a digital beamformer for arrays with a large number of elements sampled at high rates. Exact results are given for the abovementioned application parameters.
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