The ESPRIT algorithm. Variants and precision

Since wireless communications began to take an abrupt rise, with the development of techniques which were introduced for the growth of data transfer, antenna systems were considered to be the ideal choice to obtain the wanted results. Nevertheless these techniques required the development of certain algorithms also, to facilitate the recognition of the signals at the reception side (direction of arrival (DOA), phase, frequency, etc.) The object of this article is the ESPRIT algorithm, and its variants, with the focus on the precision of the identification of signals at the reception end. The performance evaluation is based on the simulation of the algorithms and the estimation of the parameters. The antenna system, or antenna array, used for these simulations is a linear array with a variable number of elements.