Low Latency Direction of Arrival Estimation on FPGA for Multi-Source Scenarios

This paper demonstrates the implementation of algorithms of direction of arrival (DOA) estimation, these algorithms are depending on LDL and Cholesky decomposition through LabView. The estimation algorithms are implemented to run on a FPGA as well as on PC that will run for the multiple sources in the far field regions of a uniform linear array (ULA). This paper done with the help of NI my RIO software; FPGA platform of SDR is primarily used for testing proposed algorithms. Performance of algorithms proposed is proved through LabVIEW simulation and hardware real-time experiments results. In particular, the proposed algorithms become clearer in their efficiency as they are implemented on LabVIEW software. The approach combined high speed signal processing techniques to achieve real time performance. FPGA resource utilisation and power constraints requires efficient memory. In addition to the performance with QR decomposition-based DOA algorithms and it provides desired accuracy, computation rate.