Mobility

Characterization of Hardware Impairments in Multiple Antenna Systems for DoA Estimation

Download Now Free registration required

Executive Summary

The authors consider the effects introduced by hardware impairments on the estimation of the Direction of Arrival (DoA) deploying a multiple antenna radio system. They derive a system model from experimental measurements of a state-of-the-art hardware test bed based on RF direct-conversion architecture. The system model includes DC offsets, carrier frequency and phase offsets, and the phase noise. Then, they propose a simple digital compensation algorithm of the impairments for bi-dimensional DoA estimation (azimuth and elevation) with a 3D orthogonal linear array. The robustness of the algorithm in terms of minimum-mean-squared error as a function of the hardware impairments is evaluated and compared with that achieved using the root-MUSIC algorithm.

  • Format: PDF
  • Size: 1284 KB